LG4 cam question
Supreme Member
Joined: Jul 1999
Posts: 18,457
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
It's supposed to be a roller, but I wouldn't bet on it... my late brother's 87 MC SS L69 was a flat....
The smart thing would be to look before you buy anything
The smart thing would be to look before you buy anything
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Joined: Jul 1999
Posts: 13,579
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
The 87 f-bodies all got roller cams. The Monte's L69 was an older, non-updated motor, so it kept the hydraulic cam, although there's a good chance that it had the bosses in the lifter valley for the keeper. The trucks had the newer block with the bosses, but didn't get roller cams until 96 I believe.
Supreme Member
Joined: Sep 1999
Posts: 7,072
Likes: 13
From: Philly, PA
If it's got centerbolt valve covers it SHOULD be a roller cam motor, but that's definitely no guarantee. I've ripped into enough of them to know that GM was not shy about dropping flat-tappet cams/lifters into 87-up blocks. Particularly in low output applications- base engines/truck engines.
If it's got perimeter bolt heads it is definitely a flat tappet cam.
If it's got perimeter bolt heads it is definitely a flat tappet cam.
Last edited by Damon; May 8, 2002 at 01:08 PM.
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