Unknown Cam specs?

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Unknown Cam specs?

Postby starvega » Thu Jan 25, 2018 12:31 pm

Does anybody know how I can determine what the cam specs are without pulling the cam out? I believe it’s the stock hydraulic roller the 502 HO has how would I go about confirming that without a lot of major work? :?:
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Re: Unknown Cam specs?

Postby spencerforhire » Thu Jan 25, 2018 2:09 pm

You could check the lift with a dial indicator and see if it matches the specs in the Chevrolet Performance catalog listing for the HO 502, but that can be tricky to get an exact measurement with a hydraulic lifter. Only way to know for sure exactly what's in there is to remove the top timing gear and look at the part #. And that's not actually 100% for sure. Back about 6 years ago I bought a complete running engine out of a drag car that the previous owner had built by some Oval Track shop; I wanted to know the cam specs, so I dropped the oil pan, pulled the front cover and cam gear and I was greeted with nothing legible. The builder had obliterated the part and grind #'s with an engraving tool; obviously some kind of "secret weapon" camshaft.
The "fleet"-
72 Vega HB Drag Car -383/'Glide/9"(9.35@146.19)(5.94@117.28 1/8th)
77 Vega Estate wagon- project(someday)will have TPI305/T-5, S-10 spindles/axles
76 Vega GT- 400/4spd/9" retired from active duty(rusty)
06 Silverado 2WD ex.cab daily
03 Silverado 2WD ex.cab (retired)
06 Haulin' 20ft enclosed car transporter
06 GMC Canyon Shop truck
07 Colorado project( 5.3 4L60e swap)
99 Saturn SL1- wife's car
01 Saturn SC2- son's project
07 Saturn Ion Redline project
and 4 more Saturn "parts cars"
Note- the very act of listing all of these has made me realize I have some kind of problem.....

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1972 Chevrolet Vega Hatchback


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