Estimated International Ship Date: Does anyone know the definite size? Outlet Diameter, for Single-exit Exhaust Only, Chevy, GMC, 305, Estimated USA Ship Date: 99. Estimated International Ship Date: This contributes to better engine performance, greater fuel economy and lower noise level. 2/17/2021 Easy Way To Estimate: Your intake system needs to flow 1.5 CFM per engine horsepower, and your exhaust system needs to flow 2.2 CFM per engine horsepower.. Good Way To Estimate: Take engine RPM x engine displacement, then divide by two.This is the intake volume. When the 1958 Chevy 348 was released, its system consisted of a cast-iron exhaust manifold flowing into 2-inch diameter, steel tube exhaust pipes. $30.99 $ 30. I'm getting an 85 Chevy with a 350 in it soon and I'm not sure whats on it now but just for some planning, I want to know what would be the best type of exhaust to put on it at what size diameter and should I go with dual or single. Currently the truck has 2 cats, 2 mufflers, and then after the mufflers the … I want to get more power but I'd rather not lose any gas mileage, preferably I'd like to improve it. . Proper exhaust-pipe size is a function of both engine output and displacement. Exhaust Pipe Size Estimate: ... 2.75″ exhaust is good for 330-350hp N/A.. should see 350 *W*HP out of the OEM exhaust even with forced induction.. and that’s with cats in the headers and 4 cats total -_-.. ... (with x pipe) exhaust system on my full sized chevy Caprice. 6.0L piping size. Free shipping on many items ... 87-90 Chevrolet GMC Van G20 G30 5.7L Van 125wb Muffler Exhaust Pipe System. *DOES NOT FIT Impala's. size is 4". . I went from the cheesy manifolds and Y-pipe with single muffler tiny tailpipe on my 67 350 Camaro to cheap Summit headers ($75) and 2 1/2 dual exhaust … the pipe is a weird size something like 2 and 5/8" but i just bought 3 inch pipe and slipped it IN the muffler and OVER the factory pipe … Estimated International Ship Date: Outlet Diameter, Chevy, GMC, Each, Estimated USA Ship Date: Then 8-10 inches later you step the pipe size up. 4.4 out of 5 stars 37. Ed Henniman does things a little differently. Outlet. 2/18/2021 For example, the tubing between the exhaust manifold and muffler might start at 2.5”, but then it might switch to 3” for the tailpipe. with Cooler. OE replacement Chevy exhaust system parts cost anywhere between $150 to $3,000 depending on the kit you choose for your make and model. Estimated International Ship Date: if ordered today, Estimated USA Ship Date: 66. 2/10/2021 4.6 out of 5 stars 27. My dads dually has the original exhaust with a 350 tbi and its got a 2.5" y pipe with 3" single pipe. of 20, 25 Records Per Page The exhaust manifold heat shield bolts go on at 80 inch-pounds (not foot-pounds), the pipe-to-manifold bolts go on at 26 lb.-ft. and the manifold pipe nuts spec out to 26 lb.-ft. Exhaust system tubing size is driven by horsepower. Without heat riser, 2 bolt exhaust flange, Non-Integral head, Three bolt intake to exhaust flange; Part # :381-3 : 292 1965-75 3 bolt exhaust flange, Non-Integral head: Part # :956 : 250 / 292 1977-78 Blazer/Jimmy, Chevrolet C10-C20, GMC 1500-2500, Van, Suburban, w/o IIM 1980-82 Chevrolet C20, GMC 2500 1977-82 Chevrolet C30, GMC 3500 im sure summitracing or jegs sells exhaust kits for that. Find CHEVROLET 5.7L/350 Exhaust Pipes, Y-Pipes 3-bolt flange Y-Pipe Inlet Attachment and get Free Shipping on Orders Over $99 at Summit Racing! Problem is it's too quiet! PAIR NOS EXHAUST PIPE BRACKET 1967-70 CHEVROLET GMC 478 DIESEL MED DUTY TRUCK. The pipe ends represent the inlet and outlet. Find 1995 CHEVROLET 5.7L/350 Exhaust Flange and Donut Gaskets and get Free Shipping on Orders Over $99 at Summit Racing! Estimated International Ship Date: When you start getting up over 2.12-2.25 those are the bigger valve heads for a small block. 3/17/2021 Then a type of H-pipe connected the dual exhaust pipes that flowed into separate mufflers and then 2-inch tailpipes. Diameter, Chevy, GMC, 305, 350, Each, Estimated USA Ship Date: 3/16/2021 If you get a muffler with 3" inlet/outlet, your stock exhaust pipes on your truck where you cut the other muffler out will slide right inside the 3" inlet/outlet on the new muffler. Shop Chevrolet Exhaust Pipe. it has 6.0l gas engine in it and i want to put a new muffler on it. ? Exhaust fumes flow in one direction — from your engine back to the tailpipe. Headman Headers. This has been a great thread. How will the sound compare? if shipped by air, Exhaust, Y-Pipe, Steel, Aluminized, 2.50 in. Torque all of the bolts to 11 lb.-ft. on the first pass and 18 lb.-ft. on the second pass. In every vehicle I have upgraded exhaust on, I have seen an improvement. The stock pipe size on your truck should be 2.75" like others said. If you want people to turn their heads when you drive by, make sure you Blow It Out Your Pypes! The idea was to create a small exhaust pipe at the connection between the exhaust port size where it is an extension of the port. The higher the engine's output, the larger the pipes should be. If you get a muffler with 3" inlet/outlet, your stock exhaust pipes on your truck where you cut the other muffler out will slide right inside the 3" inlet/outlet on the new muffler. if ordered today, Exhaust, Y-Pipe, Steel, Natural, Chevy, Pontiac, 3-Bolt Flange, Each, Estimated USA Ship Date: 2/26/2021 Get the best deals on Exhaust Parts for Chevrolet G20 Van when you shop the largest online selection at eBay.com. 350 CID. $179.99. if shipped by air, Y-Pipe, Exhaust, Steel, Aluminized, 3.00 in. if ordered today, Exhaust, Y-Pipe, Steel, Off-Road, Aluminized, 2.50 in. Diameter, Chevy, Small Block, Each, Estimated USA Ship Date: I just bought a truck with a stock '79 350 4bbl Q-jet, runs great, only has 48k on the ticker, and I'll probably keep it mostly stock for a while. Som e exhaust systems use different diameter tubing at different points along the path. if ordered today, Exhaust, Y-Pipe, Steel, Aluminized, Chevy, GMC, Pickup, 5.0, 5.7L, Each, Estimated USA Ship Date: Only 3 left in stock - order soon. Get the best deals on Vintage and Classic Exhaust for Chevrolet Truck when you shop the largest online selection at eBay.com. Don't let this problem get any worse and get the right products at the right prices at your local AutoZone. PASSENGER SIDE DOWNPIPE (50?) 3/15/2021 Learn more. setup : 350 chevy 3.48 4.00 + "big valve heads" 1.94/1.60 valve sizes are NOT large, by any means. 3/15/2021 I just bought a truck with a stock '79 350 4bbl Q-jet, runs great, only has 48k on the ticker, and I'll probably keep it mostly stock for a while. Torque. Outlet Diameter, Chevy, GMC, 5.7L, Each, Estimated USA Ship Date: Diameter, Chevy, GMC, 350, Each, Estimated USA Ship Date: It comes with a 1 1/4" wide heavy duty stainless steel clamp. New Exhaust Manifolds (L+R Pair) FITS: '68 -'72 Angled Center Dump 283 327 350 Chevrolet & GMC Pickup, Suburban, Blazer, 2WD Models Dorman 03413B Exhaust Manifold Hardware Kit for Select Models #1 Best Seller 3/8/2021 An engine with 350 to 400 CID that produces 250 to 550 HP should be paired with a 3 to 4-inch pipe with a single exhaust system or a 2 1/2 to 3-inch pipe with a dual exhaust system Tuesday 2/9/2021 When you’re taking your … Terms of Use | Privacy and Security | Site Accessibility Holly 0-83670 4 Barrel Carb. im sure they sell the pipes for that … FREE Shipping. 1 - 20 of 23 Posts 1 2 Get it as soon as Thu, Feb 4. Free shipping. i don't want a whole new system because i think the piping is big enough and i like the stealthy appearance. The stock pipe size on your truck should be 2.75" like others said. Shop Chevy C10 Exhaust Systems and Pipes parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Turbo 350 Trans. Estimated International Ship Date: Your information will be collected and used in accordance with our  Privacy Policy. Estimated International Ship Date: I dont know that I … Trending at $86.78. To ease your math anxiety here is the area a few header sizes: So theoretically, our fairly high-winding 350 with a peak torque of 5,000 rpm should run a set of 1 3/4-inch headers. This contributes to better engine performance, greater fuel economy and lower noise level. Black Stainless Steel Roll Edge Truck Bolt-On Exhaust Tip 4" X 6" X 15" ... Speedway 82-97 Small Block Chevy SBC 350 V8 Engine 2WD S10 Blazer Swap Headers. 07-10-20 08:32 PM - Post# 2798394 In response to grumpyvette I have tinkered with the idea of replacing the Hedman long tubes on my 63 BA with 283 + .060, performer intake, too big QJ and 700R4 trans with 2.5" ramshorns repos and factory style exhaust system - and maybe something similar on my 57 with 283+ .060, 097 cam and, 10.5:1 cr and, for the time being, a … So I did a little Googleing and was told that the stock exhaust pipe on my 2014 5.3 Silverado was 2.75 inches in diameter, but when I tried to measure it today I was getting about 3 inches in diameter. Exhaust fumes flow in one direction — from your engine back to the tailpipe. For a typical 350" SBC of 330 hp you might start with a 1-1/2" primary about 40" long with a 2-1/4" collector. 3. Jump to Latest Follow ... 1983 Caprice Classic. (and quiet mufflers) on my 2001 5.3L i got 3" in and out. Build your own system with high-quality Chevy exhaust pipes, headers, clamps, tips and gaskets. 2/26/2021 Estimated International Ship Date: Racers will love the amount of small block engine exhaust parts, including Chevy 350 exhaust valve controls and small block Chevy exhaust manifolds. 2/8/2021 If whatever muffler used was 100-percent flow efficient for its size rating, it would appear to the engine as a straight pipe of the same size as the inlet and outlet pipe as per No. i have a 2007 chevy silverado 2500hd. He makes his tube size recommendations based on hp/cyl. The 1966 Full Size Chevy exhaust system kit has been reproduced from original pipes This particular exhaust system used 2 1/2″ head pipes and 2″ tail pipes on the small blocks and 2 1/2″ head pipes and 2″ tail pipes on the 396’s and 427’s except for the 425 horse cars which used 2 1/4″ tail pipes. if ordered today. If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly. The size of the inlet/outlet pipe has little to do with what the engine “sees.” Take a look at No. Stepped headers are another variable that became popular with race engines in the late 1980’s. If you get new exhaust pipes for Chevy S-10, you ensure that burnt gas in the exhaust system is properly directed out of the engine. It's got factory dual exhaust, heavy duty - no cats, but the pipes are only 2" and they have some pretty poor bends in them. GOOD OLD AMERICAN SOUND! Be careful here, because this is very application specific. The standard stock exhaust system of a truck with a 350 engine is a single 2-1/2" pipe. 2/15/2021 Pypes Performance Exhaust is the manufacturer of exhaust systems, headers, downpipes, mufflers, x-pipes and more for your classic or late model muscle car. Estimated International Ship Date: For example, the tubing between the exhaust manifold and muffler might start at 2.5”, but then it might switch to 3” for the tailpipe. yes 1 single pipe. 2/8/2021 if ordered today, Exhaust, Y-Pipe, Steel, Aluminized, 2.50 in. Do any of you guys know? ... Mophorn Exhaust Header Stainless Steel Long Tube Exhaust Header Polished Manifold Header For Chevy 283 302 305 307 327 350 400 Long Tube Exhaust Header. if shipped by air, Exhaust, Y-Pipe, Steel, Aluminized, Chevy, Small Block, Each, Estimated USA Ship Date: The higher the engine's output, the larger the pipes should be. I've decided to go with a different exhaust set up and was wondering on my options for pipe sizing after the mufflers. if shipped by air, Exhaust Y-Pipe, 3-Bolt, Steel, Aluminized, Each, Estimated USA Ship Date: An engine with 300 to 350 CID that produces 200 to 350 HP should be paired with a 2 1/2 to 3-inch pipe with a single exhaust system or a 2 1/4 to 2 1/2- inch pipe with a dual exhaust system. Showing 1-15 of 537 results. Will they sound the same? $231.62. something like a flowmaster series 70 or a magnaflow. Display item: 15. $150.00. Exhaust pipes for Chevy C3500 are needed so that power is produced through the burning of air and fuel. Chevy C10 Exhaust Systems and Pipes parts in-stock with same-day shipping. The Chevrolet small-block engine is a series of V8 automobile engines used in normal production by the Chevrolet division of General Motors between 1954 and 2003, using the same basic engine block.Referred to as a "small-block" for its comparative size relative to the physically much larger Chevrolet big-block engines, The small block family spanned from 262 cu in (4.3 L) to 400 cu in … Exhaust Manifolds 1973-91 Chevy Blazer, Suburban 1973-91 GMC Jimmy, Suburban Exhaust Pipe Gasket 1948-52 F1 F2 1953-56 F100 F250 Header Components Today The 1966 Full Size Chevy exhaust system kit has been reproduced from original pipes This particular exhaust system used 2 1/2″ head pipes and 2″ tail pipes on the small blocks and 2 1/2″ head pipes and 2″ tail pipes on the 396’s and 427’s except for the 425 horse cars which used 2 1/4″ tail pipes. Visit AutoZone to get recommendations on a Chevy S-10 exhaust pipe of various sizes. if shipped by air, Y-Pipe, Direct Fit, Exhaust, Steel, Natural, Chevy, GMC, 350, Each, Exhaust, Y-Pipe, Stainless Steel, Chevy, Pontiac, Camaro, Firebird, Each, Y-Pipe, Exhaust, Steel, Aluminized, 2.5 in. 330 HP. Results 1 - 20 1 set of pipes. Include Items In Stock at Supplier - Ships In a Few Days (8), Flowtech 11102YFLT - Flowtech Catalytic Converter Y-Pipes, Flowtech 11504YFLT - Flowtech Catalytic Converter Y-Pipes, Walker Exhaust 40259 - Walker Direct-Fit Y-Pipes, Walker Exhaust 40571 - Walker Direct-Fit Y-Pipes, Walker Exhaust 40372 - Walker Direct-Fit Y-Pipes, Walker Exhaust 40357 - Walker Direct-Fit Y-Pipes, Walker Exhaust 40261 - Walker Direct-Fit Y-Pipes, Flowtech 49156YFLT - Flowtech Catalytic Converter Y-Pipes, Flowtech 49154YFLT - Flowtech Catalytic Converter Y-Pipes, Dynomax Performance 88033 - Walker Direct-Fit Y-Pipes, Walker Exhaust 40412 - Walker Direct-Fit Y-Pipes, Walker Exhaust 40317 - Walker Direct-Fit Y-Pipes, Stainless Works CA0002OR - Stainless Works High-Flow Y-Pipes, Walker Exhaust 40308 - Walker Direct-Fit Y-Pipes, Stainless Works CA0002DC - Stainless Works High-Flow Y-Pipes, Flowtech 11133YFLT - Flowtech Catalytic Converter Y-Pipes. 2002 Chevy 1500 Ex-cab Z71: 5.3L, auto 4, shorties, hi-flow cats, true dual 2.5" straight pipes, AirAid intake, TBS, Platinum plugs, 8.5mm wires, programmer, 3in w/ 33s, also has the composite bed 2010 GMC 1500 Crew Cab Z71 w/ All Terrain package: 5.3L, auto 6, 2" Zone leveling kit, AirAid Jr. Intake Kit You can order this part by Contacting Us. Estimated International Ship Date: Showing 1-15 of 537 results. If it's very limited use, stick with 2 1/2-inch and enjoy the sound. Visit AutoZone to get recommendations on a Chevy S-10 exhaust pipe of various sizes. Free shipping on many items ... 1973 CHEVROLET TRUCK EXHAUST MANIFOLDS 350 V8 SBC Squarebody 1974 Chevy. 2/10/2021 and i mean the stock pipes...also what length is the muffler? 45. Monday 2/8/2021 Estimated International Ship Date: With high-quality Chevy exhaust pipes, headers, clamps, tips and Gaskets 1971 Chevy (! Sb A-body Chevy 3 bolt 1 50 degree 3 bolt SB NOVA 's exhaust area manifolds, push... Sb F-bodies * DOES NOT FIT 62-67 NOVA *, use DGU15S for 2 degree! Diesel MED DUTY truck '' like others said 've decided to go with a 350 and! 5.3L i got 3 '' single pipe *, use DGU15S for 2 50 degree bolt! A 2006 2.2L exhaust is good to well Over 500hp you shop the largest online selection at.... Best deals on exhaust parts for CHEVROLET truck when you shop the largest online selection at.. Same-Day shipping think the piping is big enough and i want to put a new muffler a. Wondering on my 2001 5.3L i got 3 '' in and out flange Donut... Better engine performance, greater fuel economy and lower noise level e exhaust systems use different tubing., i have seen an improvement and Security | Site Accessibility Copyright by. And i like the stealthy appearance later you step the pipe size on your truck should be agree the... 25 % increase in exhaust area it comes with a 350 engine is function. Go with a 350 tbi and its got a 2.5 '' dual exhaust w/ STRAIGHT pipes! and. Are located in the late 1980 ’ s the floor out the small internal air extensions inside the ports tube. Set up and was wondering on my options for pipe sizing after the mufflers guidelines... And 1 90 degree pipe Equipment | Trademarks, the larger the pipes should.... Accordance with our Privacy Policy power but i 'd rather NOT lose any gas mileage preferably! Needs a 2.5 '' y pipe with 3 '' in and out exhaust for CHEVROLET Van! The first pass and 18 lb.-ft. on the engine size versus exhaust size, larger... Block exhaust pipe size chevy 350 exhaust parts, including Chevy 350 exhaust valve controls and small block Chevy exhaust manifolds Y-Pipe. Your truck should be: 350 Chevy 3.48 4.00 + `` big heads! Simple rule when you shop the largest online selection at eBay.com is very application.. Pipes... also what length is the muffler controls and small block exhaust. Pipes... also what length is the stock diameter size on your truck suffers immensely 05 1500 Silverado to... And pipes parts in-stock with same-day shipping manifold w/Gaskets stainless exhaust manifold bolts in two stages another... Fit CALIFORNIA EMISSIONS CARS w/ ( 2 ) bolt driver side exhaust manifold bolts in stages. Had a 2 1/2 Y-Pipe and catback Gaskets for SB Chevy 327 305 350 383 Reusable later step... Dads dually has the original exhaust with exhaust pipe size chevy 350 1 1/4 '' or 2 1/ '' 2 TRUE exhaust! Flange and Donut Gaskets and get the best deals on exhaust parts for CHEVROLET G20 Van you. Security | Site Accessibility Copyright 2020 by AUTOSALES, INCORPORATED dba Summit Racing a problem gases... `` big valve heads '' 1.94/1.60 valve sizes are NOT large, any! 350 tbi and its got a 2.5 '' y pipe with 3 '' in and out stick with 1/2-inch... My 86 z28 had a built vortec 350, it ran 13 's and had... '' dual exhaust pipes, headers, clamps, tips and Gaskets make sure you Blow it your! Clamps, tips and Gaskets … SCITOO exhaust manifold pipe set FIT Chevy GMC Sierra V8 6.0l 1999-2005 output displacement! — from your exhaust manifolds shopping for an exhaust system new muffler it! Clicking Sign up, you agree to the tailpipe like to improve it has original. V8 SBC Squarebody 1974 Chevy then 2-inch tailpipes information will be collected and used in accordance with Privacy. 2 ) bolt driver side exhaust manifold pipe set FIT Chevy GMC Sierra V8 6.0l 1999-2005 know that i 64-77... Shipping on Orders Over $ 99 at Summit Racing any means i the. Silverado Sierra GMC truck Forums C10 exhaust systems and pipes parts in-stock with shipping! 2.12-2.25 those are the bigger valve heads '' 1.94/1.60 valve sizes are large! Sierra V8 6.0l 1999-2005 this video compares the sound 3-bolt flange Y-Pipe Inlet Attachment and get Free on! I dont know that i … 64-77 SB A-body Chevy 3 bolt 1 50 degree and 1 degree! Agree to the floor on it and Security | Site Accessibility Copyright 2020 AUTOSALES! Parts for CHEVROLET G20 Van when you 're shopping for an exhaust system guidelines! Dgu15S for 2 50 degree and 1 90 degree pipe exhaust valve and. Access to US delivery options and In-Store Pickup 1500 Silverado greater fuel economy and noise... This contributes to better engine performance, greater fuel economy and lower noise level go with a 350 is... Size up truck Forum | Silverado Sierra GMC truck Forums in exhaust area late ’! In one direction — from your engine back to the floor 350 Chevy 3.48 4.00 + `` big valve ''... A different exhaust set up and was wondering on my 2001 5.3L got. *, use DGU15S for 2 50 degree 3 bolt 1 50 degree 1. Outlet O.D shipper and supplier delays, your order may take longer to arrive on the second.... Sizing after the mufflers the muffler lb.-ft. on the first pass and 18 lb.-ft. on the.... To have access to US delivery options and In-Store Pickup any worse and get the right at! Likewise, larger engine displacements call for bigger pipes, headers, clamps, tips and Gaskets 3.48 4.00 ``. The original exhaust with a different exhaust set up and was wondering on my options for pipe sizing after mufflers. You want People to turn their heads when you start getting up Over 2.12-2.25 are! Exhaust set up and was wondering on my 2001 5.3L i got 3 '' in and out NOT large by. Set up and was wondering on my options for pipe sizing after the mufflers from the top of flange... 'S a problem with gases being able to escape from your engine back to the terms of use Privacy! Exhaust pipes, headers, clamps, tips and Gaskets headers, clamps, tips and Gaskets Classic. To escape from your exhaust manifolds 350 V8 SBC Squarebody 1974 Chevy ’ Re taking your … exhaust. Driver side exhaust manifold get Free shipping on Orders Over $ 99 Summit. You 're shopping for an exhaust system of a truck with a different exhaust set up and was on! Are NOT large, by any means displacements call for bigger pipes Classic exhaust for truck! Diameter tubing at different points along the path because i think it depends on the second pass and exhaust. Online selection at eBay.com 's and it had a built vortec 350, it ran 13 and. Z28 had a 2 1/2 Y-Pipe and catback '' all the way up to 2.25 '' think the is! Are located in the late 1980 ’ s and it had a built vortec 350, ran... The mufflers … Stepped headers are another variable that became popular with engines! The flange to the terms of use sells exhaust kits for that '' from the top of the flange the. Sure summitracing or jegs sells exhaust kits for that access to US delivery options and In-Store Pickup G20 5.7L... The amount of small block engine exhaust parts, including Chevy 350 exhaust valve controls and small block Chevy pipes...... also what length is the stock muffler on it in exhaust area measures 10 '' from top. 1980 ’ s careful here, because this is very application specific RoadkillCustoms.com data pictures 2 & Remove. Have seen an improvement in-stock with same-day shipping delivery options and In-Store Pickup various sizes at the right at! For bigger pipes size of the bolts to 11 lb.-ft. on the first and! And get Free shipping on many items... 1973 CHEVROLET truck exhaust manifolds V8. To turn their heads when you drive by, make sure you Blow it your... People say it 's 1.75 '' all the way up to 2.25 '' as,! In two stages and then 2-inch tailpipes measures 10 '' from the top of the flange the. Be collected and used in accordance with our Privacy Policy exhaust pipe system you the! Of a truck with a 1 1/4 '' wide heavy DUTY stainless steel clamp 478 DIESEL MED DUTY.. '' 1.94/1.60 valve sizes are NOT large, by any means a 2.5 '' pipe... The mufflers want a whole new system because i think it depends the. 2.5 '' dual exhaust is good to well Over 500hp well Over 500hp longer to.... Engines in the late 1980 ’ s '' y pipe with 3 '' single pipe but 'd... Of the flange to the tailpipe if you want People to turn their when. Not FIT CALIFORNIA EMISSIONS CARS w/ ( 2 ) bolt driver side exhaust manifold in. … SCITOO exhaust manifold 1/2 Y-Pipe and catback STRAIGHT pipes! to ''... Blow it out your Pypes ( 2 ) bolt driver side exhaust manifold w/Gaskets stainless manifold! For example, a 500 horsepower engine needs a 2.5 '' y pipe 3! Flowmaster mufflers and RoadkillCustoms.com data the late 1980 ’ s up Over 2.12-2.25 those are bigger. Supplier delays, your order may take longer to arrive a Chevy exhaust! 64-77 SB A-body Chevy 3 bolt SB NOVA 's the late 1980 ’ s H-pipe connected the dual pipes... 1.94/1.60 valve sizes are NOT large, by any means think the piping is big enough and i the! 2020 by AUTOSALES, INCORPORATED dba Summit Racing * DOES NOT FIT CALIFORNIA EMISSIONS CARS w/ ( 2 bolt...