Thread: 496 Build

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Originally Posted by 88blu

As far as cams, I was think of using comp cams xm296hr-12 (242/248 @.050, .566/.566) or lunati 299/304 ( 240/245 @ .050, .612/.612). The smalllest rect. port head I see from AFR is the 305 and I feel it is to much head for street use because I would have to turn more than 6000 rpms to take full advantage of the head. Thanks for the reply.

seeing gm put bigger rect ports on smaller engines and i have to .you can build it with O ports there fine to a point would like to try the new darts . i just spent one day cutting out a set of 99 O port chevy heads for bigger valves and bowl work going on a 580+ CID just for the hell of it were taken bets on were they will nose over but with a 700 lift solid roller should pull hard make big QT .most all street builds can use a o port but with nos i think small rect not going to hurt not sure i would be so hot on them cams for Nos i would look at 232/244 .604/604 3500-6500 or 244/250 .604/.604 3800to6800