tubular manifolds on a 3.4

['94firebirdv6]

i was thinkin....the cast 3.4 manifolds look pretty restrictive and i was wondering if i could bolt up 2000+ tubular manifolds and then get tiagos turbo and bolt that up w/o modifications to the kit. also would i need the 3.8 kit then?
thanks

[T-Punk]

well since the 3.4 and the 3.8 are totally different blocks and have nothing in common i dont see any way that the 3.8 manifolds would bolt up.

[kerist]

I think he was asking about the newer 3.4L FWD manifolds possibly? These would not work either since the heads are alloy and designed different from the older cast iron heads.

[oil pan 4]

The cast iron heads exhaust ports are spaced like this.
o_o___o
The later Al heads exhaust ports are spaced evenly like this.
o__o__o
Cast iron manifolds are only for those heads.
3.8L exhaust manifolds won't work on a 3.4L

[Tiago]

just get headers

['94firebirdv6]

well i guess i'll just stay with my stock manifolds
iwanted to have tubular manifolds w/o modification to the y pipe on the turbo kit...but it doesnt look like that will happen
what do you think would be the difference in HP w/ stock manifolds vs. headers running a cutout in place of the cat... at around 13 psi on 114oct race gas on a stock motor

[Tiago]

the 3.4 kit is for use with headers.

['94firebirdv6]

oh well that solves my problems [img]graemlins/rock.gif[/img] lol
i think i remember reading that now...pacesetters,rksport,or cia
im in high school so not a whole lot of money but i should have it saved up by the end of next year