I also had to shim the alternator bracket about a 1/4 inch.
valve cover, alternator clearance
Thread Starter
Intermediate
Joined: Jun 2007
Posts: 35
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From: plympton mass
valve cover, alternator clearance
this must have happen to somebody else. installing roller rockers on a 93 lt1 stock valve covers not tall enought. i order tall valve covers now alternator won,t fit right hits covers i looked up lt4 valve covers because i thought they came with roller rockers but they have the same part# as the 93 does . any suggestions would help
Last edited by vett40; Jan 25, 2008 at 10:37 PM. Reason: spelling
Team Owner
Joined: Jan 2003
Posts: 20,333
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From: Summerland B.C. Canada
Did you investigate what was causing the interference on the stock covers ??
I have the worlds biggest, fattest roller rockers and made them fit into my factory covers(L98). (Trimmed drip tabs, trimmed sides of bolt towers, squished baffles.)
Tall valve covers may also give you grief with the wiper motor cover.
I have the worlds biggest, fattest roller rockers and made them fit into my factory covers(L98). (Trimmed drip tabs, trimmed sides of bolt towers, squished baffles.)
Tall valve covers may also give you grief with the wiper motor cover.
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
There's no standard for "tall" valve covers. Some are as much as 1.5 inches higher.
Pro Form makes a set that's only 1/4 inch taller than stock, that should do the trick. Summit has them.
Pro Form makes a set that's only 1/4 inch taller than stock, that should do the trick. Summit has them.
Melting Slicks
Joined: Jun 1999
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From: Bowling Green KY
Safety Car
Joined: Dec 2002
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From: Charleston SC
What ever covers you d3cide to go with have to have a notch for the Alt. Many of the covers out there for LT1's have the notch on the wrong cover. Not a huge deal but if you decide to go with them you will have to reroute the PVC vent and of course do what ever trimming needed for the R/R's. 
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Melting Slicks
Joined: Jun 1999
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From: Bowling Green KY
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Melting Slicks
Joined: Oct 2004
Posts: 2,662
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From: Knoxville Tennessee
I had to shim the alt. bracket up until it cleared the valve covers. I also reinforced the front part of the alternator bracket using a strip of metal bolting it to the alt and its bracket. Sorry I didn't do pics.
Bernie
Bernie
