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Old 04-01-2012, 09:01 PM
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454 combo qs

So I've put off my 454 for awhile now I'm getting ready to go back to it. Be going into a 77 C10 (eventually a 4 link rear end) with a 12 bolt and a TH350 (rebuild by me)

I'm thinking :

GM820 heads with 2.19/1.88 undercut valves
Lunati 60211 (actually 60621 to use VI retainer) with beehives
Probe FPS flat top pistons
3.73 R&P
2500 stall
8.7 SCR and 7.6 DCR

I think this route would be punchy with a smoothish idle. Prob could run 87...

or spend some money for some heads :

Summit 308cc heads (seems big but I can't afford much else)
Lunati 60212/using springs in head (same specs as what's recommended)
Sealed power (yuck, at least forged) forged 13.8cc domed pistons
2800 stall
3.73 R&P
9.1:1 SCR and 7.74 DCR

I wonder if this is a little large... I'm thinking I could still run 87 maybe 89..

BTW... I'm a kid so... Kids like big power! Is it worth trying to save for the heads for the 2nd combo?

I'm trying to get the most bang outta junk gas... 90 or below is avail up here.



Last edited by ekacpuc; 04-01-2012 at 09:12 PM.
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Old 04-01-2012, 09:19 PM
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Forgot... This is 0 deck and .040 head gasket.. Will never tow/haul anything... Just a "street rod"

I'm really wanting to know thoughts about the 2nd combo.. Streetable? I have power brakes but don't mind a vac reservoir or even a booster if needed. I'm sorta thinkin that with 454 CI I'd be fine with the largeish 308cc chambers and rectangles..

Last edited by ekacpuc; 04-01-2012 at 09:29 PM.
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