Ive been putting together a 350 tpi system and just got a set of procomp 3003a heads. when i went to install the tpi intake manifold it was about an inch to narrow. When i tried to line up the original manifold that came off this same block it was the same thing, so obviously the heads require a different size manifold but what? am i dealing with vortec style heads here, i have no idea what i need to be shopping for. also does any one know of any adapter plates?

 

Just did a head swap, no block machine work?

 

You might find this thread interesting: https://www.thirdgen.org/forums/afte...num-heads.html

 

if you order those heads through ebay, your fine cuz the guys inspect them b4 they sell them. if they have any casting flaws they get a new set. you wont receive a bad set.

anyway, for your question loustugots, i asked the company on ebay if they were a vortec style head, ill be receiving the answer soon...

ive read of a similar problem on here too... not sure wut the remedy was... ill do some searching and get back to you, in the meantime keep us posted if u find a fix let us know


actually,jv9999 had that covered, but to make it easier... here is wuts in that article

" The stock TPI intake would not seal to the head mating surface. The GM intake's flange is not straight across, it has a recess in the left front and the right rear, after the center bolts. This left a gap of about 1/4". Solution was a different intake ( I went with the Scoggins-Dickey Vortec TPI base)."