Author Topic: Pre-87 heads on 91 TBI 350  (Read 3308 times)

Offline SUX2BU99

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Pre-87 heads on 91 TBI 350
« on: July 02, 2008, 12:27:58 pm »
Hey guys, I'm trying to sell the heads I took off my 350 and a guy with a stock 91 Silverad with 350 TBI is interested in them. I know about the centre-bolt thing, but besides valve cover mounting, is that the only difference? My old heads are 1971 3986336 castings with 76cc chambers, 194/150 valves. Will these bolt-on without any problems to his 91 350? I'll toss in a pair of Edelbrock chrome valve covers for him too.

Thanks.
85 Chevy Silverado C10 short, wide, yellow, 2wd. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3.40 Gov-lok 12 bolt.

Offline dumbucket1

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Re: Pre-87 heads on 91 TBI 350
« Reply #1 on: July 02, 2008, 12:32:07 pm »
I cant really give you real specifics but I just bolted 80-86 heads onto a 87 305 with no issues at all. Just had to change intakes.
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Offline VileZambonie

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Re: Pre-87 heads on 91 TBI 350
« Reply #2 on: July 02, 2008, 12:54:14 pm »
The four center bolts on the intake manifold will have to be elongated to match up.
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Offline SUX2BU99

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Re: Pre-87 heads on 91 TBI 350
« Reply #3 on: July 02, 2008, 01:08:32 pm »
Ah okay, yeah so unless he wants to also buy an aftermarket TBI-compatible intake, then these may not be best for him unless he doesn't mind grinding on some holes. Thanks.
85 Chevy Silverado C10 short, wide, yellow, 2wd. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3.40 Gov-lok 12 bolt.