Hi harold, Wanted to get a couple of cam recomendations when you get time. I would hate to field all the questions you get in one day.

2 cars (one chevelle , one not)

69 barracuda (drag car) race only
Light car( stripped)
solid flat tappet
Chrysler 360 (30 over)
1 3/4 headers
Keith black 12 to 1 pistons
Holley 750
Edelbrock RPM heads and instake (2.02/1.6)
Crane adj. rockers
3800 tci convertor
727 tqflite tranny
410 spool

69 chevelle (street/strip)
Solid Roller needed
4000 lbs with me in it!
496 ci
merlin 310 heads (out of box) (may switch to afr 325)
Holley 1000hp
Dart single intake
2" hooker headers
3 1/2" exhaust
forged crank/rods/pistons
10.2 comp
th400 3-3500 stahl (not sure yet) (3800 right now)
9" w 4.56 gears 28" tire (may switch to 4.11)
NX nitrous (150-300 shot) usually 150 (couple times a month at the track)
right now using comp cams 11-772-8 248/50 653/660 lift solid roller
maybe your 50231 cam?



Thanks in advance from your very busy schedule,

My guess on what he'll say :D

287/295 .660/.660 or 285/295 .630/.630
Just what I was looking at till I ran out of money. maybe 300/30x

69bigblock,

First, I must apologize, almost all my 'stuff' is at work, so I am going on memory.
For the Mopar, I'd use either my 286/290 Mopar solid, 259/263 at .050, .586/.597 valve lift, and 106 LSA, or if your car is real light, the 290/294 solid. It is 263/267 at .050 amd .597/.609 valve lift, again 106 LSA. I'd put either cam in at 100° ATDC ICL, and they will need a good fuel system.
For the 496 BBC, the 287/295 is a good one, but if you're not in a big hurry, ie, still have a couple of months, I've got some new ones coming out at .663/.663 valve lift, and a good range of durations. I'm getting durations at .015" that I used to get at .020", so they look very good....
My SOLID LIFTER BBC 288/296F is 288/296 at .015", 255/263 at .050", quite fat at .200"(still classified), and .626"/.626" valve lift. Valve lash in the BBC is .018" HOT.
The new roller cams at 8°-10° fatter at .200, for the same .015/.050 numbers. Valve lifts will run .626", .663", .708", .750" and UP!!!

UDHarold

Harold, thank you very much for your input. Maybe you or someone else here can explain how you make more horspower with less lift. I know it is done but is it the duration numbers or the lobes or ?

Thanks in advance.

I'll be real brief......
Horsepower/torque is made by both the intake and the exhaust cams. I won't go into exhaust theory tonight, but the proper exhaust cam can add torque/horsepower even with identical intake lobes.
On the intake side, horsepower/torque is made by minimizing reversion before TDC, and maximizing area after TDC, particularly in the 1st 75° ATDC. There is no way that the typical cam company can give you that information. I generally look at the timing points at the seat, and the .200" duration numbers. Everybody references the .050" numbers, and I do too, but they have only a limited effect.
When you look at 2 cams with almost identical-looking durations and lift, and one makes more power, it's all in what I said above. Sometimes it is more than just a couple of BHP.....

UDHarold