Thread: 496 Build

Tweet

i have a cam thats new Erson hyd that will work new 4/7 swap or i a have a comp that would work as well but solid roller i would go team G intake .3500 is about all the stall you need for the cam i have you should use the race roller lifter that has the short valving in the lifter for hi rpm .i would go with a small rect port head if your dumping Nos . with that hi of stall and Nos you may be working abit past them heads with the RPM intake but thats the way i see it you have a intake .gear and stall. heads but not a cam thats abit backwards from the way i do it . i not the king of the bbc engine but i built many from 396 to 632+

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.

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

I would be willing to give it a try, just the guy I talked with from afr suggested the 290 oval port for my use. I like the darts and trick flow as well they just dont flow like afr does. My goal is to hit 600/600 on motor maybe a little more and about 750-780 with the spray. As far as bottom end goes Im looking at scat, lunati or callies. Appreciate the suggestions.