got_tork

In all the searches I've done I can't seem to find an answer to my questions. 1) Of the swirl port heads are there certain ones that are better than others? 2)Can you use a TBI manifold on TPI heads? Any and all info would be appreciated.

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ericjon262

1) no not really.

2) yes, it should bolt right on as long as both sets of heads are the same bolt pattern (pre 1987, or 1987-1995 iirc,)

skirkland1980

there is a big difference between 305 and 350 heads

got_tork

I have a L05 in my wagon and I'm just lookin' to wake it up a little it's a DD.I have a LT1 cam and a 670holley TB for it,I have to do some more trouble shooting but it does have a valve train noise on the right bank.If I have to get them freshened up should I just polish up the ports or try and find a set of TPI heads? Did they make a 350 TPI ?or are they all 305's.And are they pretty common? Thanx

skirkland1980

all corvette tpi's were 350cid. camaro didn't use a 350 until around 1990 or 91. i have a 305 tune port system for sale cheap. you'll need 21lb injectors for a stock 350 or you can use 24lb LT1 injectors for a mildy modified engine as long as the cam makes at least 13in vacuum at idle