So I buy this new 4.3 man motor.....claimed 320+ HP

Any ways..It it is all gasket matched all the way though....My old motor has a factory chevy tbi on top...The new motor has an edelbrock performer intake on it. It has been ported to accept a big 4 barrel holley projection.

Here is my problem...I have a howell setup right now running all factory stuff. Do you know of a company that makes a plate to mate my throttle body to a edelbrock performer 4barrel intake?

There has to be some kind of plate for this. THe bolt pattern for the conversion would be the same as a 350 (obviously)
Thanks Rick

holley gives you two different ones when you buy the 670cfm projection so they might sell you one. Is yours a spreadbore? if it is factory bigblocks with tbi from 88 to 93 use a watercooled adapter about a 1" thick,
Jon

yeah, Holley does sell them seperately. Call Summit, they have them.