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04-11-2020, 09:15 PM
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#21 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,728
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Re: Will Corvette 454/427 exhaust manifolds fit 1968-1970 Chevy C10
The big block Chevrolet is the reason headers have a reputation for increasing HP, because the passenger car/truck exhaust manifolds aren't very good at all. Putting headers and a performance exhaust on an LS-5 454 was probably worth 50hp at the wheels, and on an LS-6 maybe 100.
On a truck, a dual 2 1/2" exhaust is probably not too shabby, but add in a big cam and high rpm and the manifolds are a HUGE power killer.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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