4 speed

does anyone know if the stock 73 exhaust maniflod will bolt up to a vortec headed small block.

I know headers would be better but right now just trying to make what I have on hand work.

later I would plan to go with side pipes

bluedawg

I dont think they will, i could be wrong, but iirc when you buy headers, there different for vortec heads.

BKbroiler

I have a 77 and I used the stock manifolds on my Vortec heads for a while.

Scottd

I ran the same cheap headers on my stock and vortec heads. You will be fine. After all that work, why arent you switching to headers?

edd gordon

I built three vortec head engines. Your wasting good horsepower with stock manifolds. Even cheap headers are better.

bluedawg

Ok so i was wrong. Is there a difference in bolt pattern at all?

OMF

No difference....the bolt pattern is the same....bolt on and go

bluedawg

Good to know, but i truly thought there was some difference, to the op and all who read...my bad.

BOOT77

If the manifolds and pipe is there, run it till you get better. If you gotta get some pipe, just wait for some headers.

4 speed

the racecar engine is a 355 vortech head motor, and cash is tight right now, but Iam just trying to put something together til things get back to normal. then I will probably put the engine back in the racecar and put the 454 in the vette.