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post #138 of (permalink) Old Mar 23rd, 20, 12:34 AM
Senior Tech Team
Join Date: Sep 2006
Location: Los Lunas, NM
Posts: 8,528
Re: Boosted Beaumont Build

Originally Posted by GoFast Beaumont View Post
Well heads are cleaned and assembled. Was gonna send them off to Foxwell for some magic but given the current events I decided not too.

So new seat pressures are at 170-173lbs with a 408lbs rate. Did some calculating and with a 140lbs(stock) rate on a zz502 camshaft and 10psi boost I need 175lbs. Now given I run a beehive with tool steal retainer I thinking I am good with a marginal buffer zone.

All in all hopefully the combo lifters of morel(exhaust) and GM 572(intake) will hold up to a lot of street duty.

As well I am re-using my valve springs. For inspection I completed a penetrant dye test as well checked all valve spring pressure.

Parts list here is:
AFR 305 (cast chambers, non cnc, very old head)
PAC alloy springs 175 seat with 408 rate
Took steel retainers
10 degree locks
Viton seals
what beehive spring & retainer set are you using here?
same seat # spec's on exhaust as intake??

68-Malibu 427bbc/t4oo/3.73-12bolt/pro charger f1-r
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