Intake manifold swap to pre EFI engine?

[hoser]

Hi
I know this place is for 73-87 trucks but I have a questions I think will apply to the same years and I bet someone has the answer for.

I have a 90 Suburban and the engine is bad,  I have a good 350 from a 78 Suburban that is good I want to swap it into the 90 and use all the 90 emissions and EFI, I think the only problem will be the intake, 4 of the bolts are vertical not angled like on the pre EFI engines, does someone have a link to or the part number of the manifold I need to install the 78 engine into the 90 burb.

If I am missing something other than the intake not fitting to make this swap a sucess please let me know hehe

Thanks in advance.

[hoser]

I forgot to mention I am looking for a replacement that will give about the same performance as a stock manifold I am not looking to spend big bux on a HP manifold..

[Captkaos]

Actually you are in the right place, the 73-87 bodystyle ended in 87 for the pickups, but ended in 1991 for Crew Cab, Blazer and Suburbans.

You can elongate the holes in the intake to make it work on the pre-87 block though.

Check pugsy's post here
specifically this topic: http://forum.73-87chevytrucks.com/smforum/index.php?topic=5463.30
http://forum.73-87chevytrucks.com/smforum/index.php?topic=5463.msg28417#msg28417

[123 pugsy]

You can get a machine shop to fix up the center bolt holes.I just reamed them out with a drill. I made up some washers with 3/4" tube with about a 1/4" wall thickness. I picked up a couple of feet at the metal market as its handy stuff to have around. I drilled out the hole in the washers to 3/8".