Quote:
Originally Posted by John Milner
That is basically the same cam he has in his engine. Specs on the Melling 26308 are: 231/240 .470 .470 113.
Should be a strong runner. Adding compression should help. I still feel like it should melt the tires at will with the 96 heads. I run a similar cam in a 10:1 428 with a 4 speed and 3:23 rear. I have never taken it to a race track and doubt I will but the first 2 gears are pretty useless if you crack the throttle open from a roll.
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Didnt realize the 60919 was the same as a RA4 cam... regardless the 462 can probably benefit from a bigger cam than whats in there IMO, which cam I will leave up to others more experienced with cams for big cube engines like this.
Sounds like he is leaning towards aluminum heads to get more power and if so, a bigger cam is definitely better for better flowing heads & higher comp than the current 96 heads.
10.5-11:1 should be fine on pump gas... I run 72cc E-heads at ~ 10.7 with no issues at all using 91 no ethanol, can even run on 89 but prefer not to. Cliff has stated hes ran 89 with 11:1, just gets some run on when shutting off on hot summer days.
I agree 87 or 85cc D port alum heads are the better option for his combo & can keep the D-port manifolds or headers. Also consider the exhaust system, headers will make more power & need at least a good 2.5" full exhaust with free flowing mufflers like dynomax ultra flow or pypes race pro.