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Old 09-23-2011, 06:19 AM   #1 (permalink)
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4.3 cam specs???

I have Googled til I'm blue in the face....does ANYONE have the OEM cam speciifcations, "BY PART NUMBER" for the 4.3??

I have found "code" reference specification...example; "Z" "T" etc. BUT nothing by part GM number? The problem is that everyone sells their cams...by part number!! Aftermarket OEM maker's such as Melling, Sealed Power, etc sell by PN. Used roller cams are all listed by PN....but no one seems to have the spec's on these OEM PNs?...lots and easy for the SBC, but not the 4.3?

The aftermarket is a non-issue, plenty of detailed spec's on lift, duration, etc...but GM factory spec's are not to be found. The GM Performance series (OEM aftermarket) provides plenty of detail.

I know the Astro van engine was listed as "HO" (high output) and I have located some "Z" code spec's referencing the Astro van's lift, duration, etc. But NOT by GM PN!!

Also, does anyone have a cross reference chart showing the Mercruiser spec's crossed over to the Chevrolet PNs? That would be useful as well. Mercruiser, Volvo, etc appear to like hidding their Chevrolet PN and lift, duration spec's as well!

Thanks
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Old 09-23-2011, 07:39 AM   #2 (permalink)
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You might have better luck in the Chevy section with this one........
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Old 09-23-2011, 12:26 PM   #3 (permalink)
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Thanks, I'll try anything!!
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Old 09-23-2011, 12:49 PM   #4 (permalink)
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Old 11-11-2011, 12:59 AM   #5 (permalink)
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4.3 cam specs

Hotsixes .com has a list of factory part numbers for the 4.3 .
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