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76 Firebird valve adjustment
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Frankie Boy
Anonymous Poster
f.gravelle@sympatico.ca
Oct 6, 2007, 5:06 AM
Post #1 of 4
(2953 views)
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76 Firebird valve adjustment
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need advice to adjust valves on 350 big block 76 Firebird.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 6, 2007, 5:45 AM
Post #2 of 4
(2951 views)
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Re: 76 Firebird valve adjustment
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Need more info. Is this an original engine? I don't recall any "big" block 350s by GM??
T
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Frankie Boy
Anonymous Poster
f.gravelle@sympatico.ca
Oct 7, 2007, 4:13 AM
Post #3 of 4
(2946 views)
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Re: 76 Firebird valve adjustment
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Thanks for your reply. Car was built in California. The engine is also called an "Ohio Blue". It is a 350 two barrel. Runs pretty well, just the valves sound indicate slightly out of adjustment. I am looking for the proper adjustment procedure.
Also interested in knowing the proper vacum hose routing, though I am aware they were modifying things on a frequent bases in the 70's for enviromental reasons. TX again.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 7, 2007, 5:04 AM
Post #4 of 4
(2944 views)
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Re: 76 Firebird valve adjustment
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I'm not going to be of much help as this vintage is when CA was really on it's own. MA joined that club much later. It caused ton's of modifications to meet CA emissions including engines that were not put it certain cars for CA that would have elsewhere. The Chev block outlived them all. Pont, Buick were lost about 1980 leaving just Olds and Chev V8 engines and Cadillac which it wouldn't have.
You need to know what engine is in there by division of GM. Real Pontiac V8s had terrible valve trains and ate timing chains for lunch. Didn't matter as they just got fixed up and still made a powerful engine to keep up with the rest.
Again I'm not familiar with this "Ohio blue" but know of no BIG block GM 350s. Sold to 49 states would have been the 455 big block. Really just size as they look similar.
At any rate I don't know of any solid lifter GM V8s from that vintage and for valve adjustment you relied on the hydraulic lifters to self adjust. If out of spec they would tick and that usually meant a worn camshaft. I'd have to look at a good old paper book on any presets for a real Pont engine. Chev could be adjusted to eliminate ticking and there was a trick with the Olds rocker arms and a bench grinder.
Things like vac diagrams etc. would be available but off anything I could muster. Most folks altered lots of things on these cars in an attempt to gain some HP that about everything lacked.
If you are restoring this car to original I strongly suggest getting in a Firebird club. If you can tell me the block I think I can come up with help with the valves. Good luck,
T
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