What Cam?
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Senior User
Joined: Aug 2008
Posts: 291
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From: Fayetteville Arkansas
What Cam?
Whats going one everyone. I have a 1989 351 block i plan to make a 408 and put in my 77 F-150 4x4, i have a Eagle stroker crank and H- beam rods, but have not decided on pistons yet, i also have a edelbrock rpm Air gap manifold and 185cc 2.02 int 1.60 ex aluminum heads with 60cc chambers, i would like to keep compression around 10-1. My question is has anybody ever installed a Comp cams Extreme 4x4 cam and how did you like it, im either going to put one from that line or i might retrofit a roller cam im not shure. Is the cost of a roller worth it
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
The cost to install a retrofit roller cam assembly in a non roller block is not worth it IMO, on the street both cam types will make the same power with similar cam profiles, but the roller will cost 4x more.
What cam to use is the million dollar question. You owe it to yourself to get a copy of DesktopDyno and simulate as many different cams as you can. In general the more displacement you have the more cam duration you can use without impacting low rpm TQ, but so much depends upon your combo and intended use. Is it a manual or auto tranny, high stall or stock, lots of gearing and big tires or more modest meats and gears, daily driver or mud bogger. With this program using accurate head flow data is critical to getting an accurate power prediction, here's an example of 1 combo with AFR heads and Comp Cams XE264, this puts all the power below 5000rpm, but you could certainly get more HP with a different cam, just depends what you want/need.
What cam to use is the million dollar question. You owe it to yourself to get a copy of DesktopDyno and simulate as many different cams as you can. In general the more displacement you have the more cam duration you can use without impacting low rpm TQ, but so much depends upon your combo and intended use. Is it a manual or auto tranny, high stall or stock, lots of gearing and big tires or more modest meats and gears, daily driver or mud bogger. With this program using accurate head flow data is critical to getting an accurate power prediction, here's an example of 1 combo with AFR heads and Comp Cams XE264, this puts all the power below 5000rpm, but you could certainly get more HP with a different cam, just depends what you want/need.
Thread Starter
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Senior User
Joined: Aug 2008
Posts: 291
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From: Fayetteville Arkansas
Thanks for the info, its gonna be a C-6 auto, and gears no deeper than 4.11. I plan to get the tranny rebuilt with HD parts from TCI, and the truck will be a weekend toy. I do want low end tourqe but i also want a motor that will pull all the way to 5500 Rpm maybe even 6000. Im ditching the np235 tranny cause thats not the way i want to go, and i have no idea about a stall converter cause this will be the first automatic i will have owned
