looking for advice on a cam swap

[mycudaeatsford1970]

I have a 1970 Plymouth Barracuda 440. The engine has been rebuilt with a .30 overbore, forged pistons, rods, and crank, Edelbrock Performer RPM heads which flow 291 on intake and 214 on exhaust at 600 lift, 2.14 intake and 1.81 exhaust valves, an edelbrock performer rpm intake manifold and a holly 750. The car sports a 2500 stall converter and a 727 tranny with a dana 60 outback and 3.73 gears. Currently I am running a hydraulic/flat 484/484 at 284/284 duration purple camshaft. I want to swap to a roller cam from crower with 270/280 adv. duration, 236/246 at .50, and 550/548 lift with 1.5 rockers. Do you think this would be a good swap considering my engine combo? plz let me know your thoughts and feedback.

[Triplet]

I think that the duration sounds a little high for that torque converter, but the low gears may make up for it and be ok. If it were me, I'd probably do a 226/236 @0.050 for that converter. Also, you didn't mention the compression, that big of a cam is going to bleed off a little compression, and if it's already low, you might have a problem. Sounds like a pretty good combination in general though! Roller cam is definitely the way to go. You'll feel that difference!

[mycudaeatsford1970]

Ive got 10:1 compression. thx for the advice! I appreciate it.

[KMracer]

i agree. especally if its a street car. try and keep the lift a little lower too. is it a hydraulic or solid lifter?

[MrPbody]

Just finishing up a 499 (4.15 stroke, .030 over 440 block). We chose Comp Xrtreme Energy solid roller. Good street cam. Not too rowdy, but rowdy enough. Designed as a street cam, valve train issues will be less than a "race" cam. 254/260 @ .050, .582/.588, 110 LSA.
"@.050" numbers aren't as clear an idicator with a roller. You can run much more duration and maintain streetability.
We also chose an open plenum intake. Iron heads ported to 310/245 (2.190 intakes, 1.75 exhausts). We expeect about 650 HP on 93 octane gas. '68 Road Runner "big tire" car (back-halved) for street use, should run in the mid-to-high 10s.
Upgrade your rocker assemblies! Don't pinch pennies, either. This thing has ENORMOUS potential. Exploit it... That little Holley isn't going to be NEAR enough. The 499 will have a 1050, but I feel a 950 is adequate for what you're doing. One 440 'Cuda we did goes mid-11s, and it ran out of fuel on the high end with an AED 850 on it. It runs a MOPAR Performance "purple shaft" cam (obsolete by a long way, but the customer gets what the customer wants...).