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Old 11-12-2012, 10:15 PM
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very high compression and bad cam choice for the car. not reall good with a 2000 stall.
The distributor needs to be recurved. you need to shorten the advance curve to 10deg .
Then you can set the timing at 22 at idle and 32 total. Use a 4.5" rated power valve.
The comp XE cams are noisey at idle especially with any hi bleed lifter or hi energy lifter etc.
Crappy rockers don;t help.... use ported vacuum advance once the mech adv is corrected.

it will idle clean and not ping at WOT with modest 32deg timing. Thats about as best you can do with this .

You need this cam summit 1103 214-224-.442-.465 112 and converntional GM hyd lifters.
ok with high compression especially if you move it true "straight up" 112-112 centers when
you install it. Degree it in.... much tamer more civil cam ok with high compression ok with stock 2000 stall and 3.42's
better fuel mileage. quite at idle with good normal GM lifters. Check valve spring pressure. If excessive
the lifters will be noiesy er especially with XE cams.
uses a more stock timing curve.

You don;t need to rebuild the motor. not ever motor needs a hot rod cam.
The non adjutable distributor vac advance needs to be looked at and the rockers are suspect.
stock type rockers are fine with this camshaft and are quiet.

Engines do not ping at idle unless they are really really hot,, but the valvetrain may be noisey.
Is it detonation or valve train clearance noise? engine knock goes away with less spark advance,, valve-lifter noise does not.

Last edited by F-BIRD'88; 11-12-2012 at 10:24 PM.
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