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Camshaft specs.

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david_moore:
Anyone know the specs. for an Elgin E903-P camshaft? When I put together the motor for my Corvette I used the book "How to build CHEVROLET Small-block V-8 RACE ENGINES" That was the cam they suggested using. As I could not source the cam mentioned above, I used a Cam Dynamics part# 975848 which I suspect is similiar. As cash at the time was not as abundant as I'd like I used some plain jane heads (from an impala:(). After breaking a valve spring on the return journey from Canberra I've decided I really need to get better heads, but also think a wilder cam would be good. What me care about fuel economy! Now that's a bumper sticker!

Brutus:
Dave...According to Crane Cams comparrison sheet, this is their equal to the Elgin E903-P. Hope this helps.http://dab7.cranecams.com/SpecCard/DisplayCatalogCard.asp?PN=WG996

david_moore:
It appears it is a similar cam grind, so when the heads come off, I think a new cam will go in. Next million dollar question is what is the maximum compression ratio that can be used on the fuel we get these days? Would 9.5:1 be OK? I believe if alumnium heads are used, it is possible to go a bit higher. And Where's a good place to get a HEI distributor regraphed? The one I have just begs to be set at 12degrees BTDC and the engine revs nice and strong to 5500 rpm, however in the warmer times of the year the motor starts to ping and overheat. In cold weather it is fine, mind you I have disconnected the vacuum advance as it gives too much. I think the main problem here is according to the number on it, it is for a pollution 305 ci motor. The carb I have is also a pollution job too. I think there is meant to be a valve that stops vacuum advance until top gear is achieved. So many questions!!!:{

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