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Author Topic:   350?
ace1
Dirt Roller

Total posts: 11
posted November 08, 2005 10:46 PM  
I have a 88/89 model 350 with stock flat top pistons, stock roller cam, fuel injected. I want to change it to a carburator but the two center intake bolt holes are at a different angle than the ends. I could change the heads but won't I have to change the cam to flat tappet or change the springs in the heads. I would like to keep the roller. This wont be a race engine just a play toy in a 4wd. What is the fix for these heads.

77k
Dirt Maniac

Total posts: 174
posted November 08, 2005 11:54 PM  
slot the 4 center holes in the intake and use little permatex.

A. Bighurry
Dirt Full Roller

Total posts: 38
posted November 09, 2005 05:34 AM  
You can also buy an intake made for these heads. I know that Edelbrock offers them.

Koolaid
Dirt Forum Racer

Total posts: 86
posted November 09, 2005 09:02 AM  
GM Performance Parts offers a cast iron highrise 4 barrel with that style of mounting pattern - would be a good high-rpm intake.

Like 77k said also - you could slot the holes - I believe Edelbrock makes a special "slotter" tool , but if you have access to a vertical mill you probably wouldn't need that.

goetzracing58/78
Dirt Roller

Total posts: 5
posted November 17, 2005 05:32 PM  
buy a vortex intake manifold hello its comon since

Koolaid
Dirt Forum Racer

Total posts: 86
posted November 17, 2005 07:51 PM  
goetzracing58/78 - why would you have him buy a vortec intake manifold? That doesn't make "comon since" - it makes no sense. A vortec intake is going to be 8 bolt with no center holes as shown in the 96 on up heads - an 88/89 is not a vortec head - simply a center bolt valve cover head with the center two screws at different angles. Next time you rag on someone at least have your facts straight.

ace1
Dirt Roller

Total posts: 11
posted November 17, 2005 08:23 PM  
I had a stock GM 4bl aluminum intake and used a die grinder to slot the holes. Then ground a flat spot for the bolts to sit flat on. Can't even tell it was worked on. Turned out real good. From all the parts stores information it looks like this engine came out of a 89 corvette. Didn't have to do anything to it but freshen it up. Pretty good find in a junk yard for 100.00.

ctfarm
Dirt Freak

Total posts: 210
posted November 17, 2005 09:25 PM  
87-88 Chevy Impala.It's a quadrajet intake,it has all the right sensor locations.The TBI cam does not work well with a carb,you should consider a cam change.


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