Ive tried searching and came to find out there is washers that allow you to run and "old" style intake with newer heads. If thats true can someone point me in the right direction?


I put newer tpi heads on my lg4 and now my intake doesnt line up

but thanks in advance guys/gals

 

Stock intake?

You can get an '87-up Edelbrock Performer intake.

Why did you swap the heads in the first place?

 

Well my car has a very tired LG4 right now and i bought a LB9 short block that has a brand new rebuild on it. The LB9 has a really nice cam and double roller timing chain. I bought a set of 083 heads and now i know that the center intake bolts sit at 72 degrees instead of 90 degrees. I want to use the intake and carb from another motor i have to build a lil nasty 305.

The LB9 specs:
has factory cross hatches still
1500-4500 rpm summit cam
double roller timing chain

Heads:
just rebuilt
I have .028 compressed Mr gasket head gaskets.....should yield 9.9:1 compression ratio as of current setup. Im looking into having the heads shaved down to 58cc combustion chamber size to bump my compressn ratio to 10.8:1

The intake i have is a old weiand team G single plane and a holley 600 CFM vacuum secondaries.


My plan is to run a 3000 or higher stall with 3.73-4.11 gears in my trans am

 

i guess no help here......i ask questions and no help


jeez.....i gave up doing a BBC swap and now doing a budget build on a 305

 

The best choice would be a performer, but if you're on a budget the just use a dremel or drill to get the bolt holes lined up. Not the best way, but people do it every day.

 

You have to enlongate the center bolt holes on the intake. The washers you speak of come with some off brand intake made to fit either pre 87 and 87 up heads. You can use a drill to enlongate the center holes then fill the hole up with silicone after it is bolted down. If not it will leak oil.

 

elongate the holes? it looks like the holes need drilled straight down and then the intake milled to meet the newer angles(about 18 degrees difference)

 

The angles should be the same. Just drilling out the holes and use some rtv and washers. People do that at home all the time.

 

If you have access to a mill that would be great to mill the flange flat. Most people just run the bolts down tight and let it go. The bolts will only grab on one side. leaving a gap to the inside to be filled up with silicone.