mcconahay37

iTrader: (3)

I wanted to know if I can modify my performer RPM intake to fit vortec heads by drilling the holes straight down to match the vortec heads. I did a little damage to my heads, and if it's going to cost almost as much as a set of vortecs, you can guess what I'm going to do. just keeping my options open. Thanks

------------------
82 Camaro:
350
Erson cam, ported heads,Comp Cams 1.6:1 rocker arms
Edelbrock Performer RPM intake, Holley 600
Crane Hi-6 ignition, Accel supercoil
TH350 tranny with 2500 stall.
Eibach Pro Kit
SLP 1 3/4" headers

Engineboy

The vortec heads only use 8 bolt holes to mount the intake for starters....not just the angle is different.

I belive the ports are a little off also.

------------------
ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...

R.I.P. #3
"He can see air"

[This message has been edited by Engineboy (edited July 31, 2001).]

tacoboy

not sure if this is true but i heard today that you can get either the heads or a manifold predrilled to fit pre87 stuff....sorry i cant remember which it is...if its the heads (vortec), then thats you, if its the manifold then sorry

Ray87Z

Not feasible. Bolt holes aren't even in the right places. Ports would also be pretty badly mismatched. Only option is to get a new RPM that is made for Vortecs. Not too much money...

And it's the heads you can buy predrilled for regular style intakes, but you don't want those either. Like I said there are port mismatch problems with standard intakes (some intakes can't physically even cover the ports, much less match them for good flow...) And the Vortec's don't really have enough meat in the area where several of the new holes go. Only person I've known with these predrilled heads had problems with stripping the threads out pretty quickly. Scoggin Dickey prototyped doing this and refused to sell them due to the inherent problems. Do not go that route for anyone considering it. Just buy the damn regular heads and the intake made to fit em...

------------------
Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray


[This message has been edited by Ray87Z (edited July 31, 2001).]

mcconahay37

iTrader: (3)

OK. That's what I needed to know. Thanks.

------------------
82 Camaro:
350
Erson cam, ported heads,Comp Cams 1.6:1 rocker arms
Edelbrock Performer RPM intake, Holley 600
Crane Hi-6 ignition, Accel supercoil
TH350 tranny with 2500 stall.
Eibach Pro Kit
SLP 1 3/4" headers