Chevy 350 exhaust manifold sizes

[chevy311]

hello there, i was just wondering if anyone could give me any information regarding chevy 350 exhaust manifolds. I really need to know if there are dual manifolds out there that are 2.5 inch and have a rear dump. I was just wondering what car and year of car has these equiped if possible. any info would be greatly appreciated.

thanks all..

[molhannah]

If menory serves me corvette was the only one with 2 1/2" discharge, but they weren't angle dump.
To get close to what you need and not sure of the discharge diameters.
You need to find the ones with engines with most H/P
#3855163 l/h-66-67 passenger, truck with 283, 327
#3872741 l/h-66-68 283,327 passenger
#3896956 r/h-67-68 283,307,327 truck
#3932469 l/h-69-70 350,400 passenger
#3932473 l/h- 68-70307,350 passenger
hope this helps!

[chevy311]

I just need to know if theres such a exhaust manifold that is 2.5 inch that fits a chevy 350..

[molhannah]

Like I said, yes there is a 2 1/2 from the 58 corvette, but it's not and angle dump. You can purchash vette exhaust manifolds that are GM repo's at about $150.00 each. Why to you need 2 1/2" discharges?

[chevy311]

need the biggest rear dump exhaust manifold for the chev 350 to put on a stock car.

[tom3]

Originally Posted by chevy311

need the biggest rear dump exhaust manifold for the chev 350 to put on a stock car.

Far as I know the only decent manifolds are for the mid 60s Hipo 327s with the rams horn type center outlet manifold. The rear dump log type are pretty poor. Even the 70s Z28 had pretty poor manifolds. Be real surprised to see a 2 1/2 inch dump on any of those and the actual ports were really poor. Can you not run any type of headers?