1BADDASSBOWTIE

iTrader: (1)

I ran a cross a set of stock manifolds off of a 2002 Z06 and I have a 1999 C5 and was wondering what the difference was between my stock manifolds on my C5 and the stock Z06 manifolds????

alchemistz06

prolly flow a lil better but not worth the hassle. Better off spending the effort on installing headers.

Lost

iTrader: (2)

Unless your planning on using the rest of the exhaust system, don't waste your time, the cast manifolds will NOT match up to the earlier exhaust systems.Collector location is totally different.

niphilli

I have the exact same situation. Dad has a 98 auto and I am planning to upgrade my 03 Z06 to LTs.

I have searched a ton, and even found an article showing significant gains from swapping Fbody style manifolds to '01+ versions of the vette manifolds.

So... How bad are the early C5 manifolds compared to the later C5Z style?

A.R. Shale Targa

iTrader: (2)

I've read about 5 horsepower...the newer ones are a tri-y design

niphilli

I am thinking of going with a camshaft designed for an exhaust manifold like the:
Thunder CheatR (219/230 607/604 117 lsa)
EPS custom grind (218/230 .595"/.600" 115LSA +4 advance)
VHP 056 (216/224 0.551/0.551 114.5 LSA)
'02+ C5Z06 cam (204/218 .551/.547 117 LSA).


With cams in this range LS6 manifold, stock LS1 heads, still think 5RWHP?

WKMCD

iTrader: (2)

The C6 Z06 manifolds are better. The C5 Z06..not to much.

LS1LT1

iTrader: (16)

And I do believe that ALL C5s got those improved, upgraded manifolds/cat set up starting in 2002 not just the Z06s, correct?

breze84

As far as I know only the Z06's did but I COULD BE WRONG!!!

meine96ws6

iTrader: (4)

Better off just doing ebay headers man... look up those reviews

redctsv

iTrader: (1)

Go with the c6 z06 headers cats and H pipe i know the ls3 vette guys are seeing up gains of almost 20 whp and wtq.