Anyone have any experience running this camshaft? Looking to go a bit more aggressive than the 270 cam I got from Mummerts. It specs out at .448 lift, 250 duration @50, 108 lobe center & 70deg. overlap. It's going in a 57 Ford 292, 113 heads, Edelbrock 553 3x2, Reds headers, T5 trans & 4:11 rear end. One other cam I'm looking at is from CompCams. Is a dual pattern cam that specs out at .489 lift, intake duration 239@50, exhaust duration 253@50 with 107 lobe center. Would either of these cams be a good choice or does anyone have any ideas on a more aggressive cam? I do all my driving on the street.

Dan      Kingman Az.      86409

Dan;

I am running that Comp Cam with the .489 lift in my 56 Customline and like it alot. My motor is a 292 bored .060 over with a 312 crank, ported ECZ-G heads, dual Edlebrock 500 CFM carbs, T-5 tranny and 9" 370 posi rear.

Rono

  Ron Lane,  Meridian, ID

If you are looking at a street cam only I think both are too big for your combination. You would definitely get the big cam idle, but your low end torque will be very weak, and with that much overlap getting your carbs to work properly at low speeds will be a pain.. I would shoot more for a cam in the 230@.050 range and go with a wider lobe spacing like 112 for better street manners.. But hey that's just me

Thanks for the input guys. Rono, the set-up you have sounds sweet. I can see why your happy with it. I thought both cams were a bit too much for the street, but the selection for our engine in slim. Before I went to the 270 cam it had another CompCam in it. I could never get it to run right because the guy that put it in mixed up the spacers and the cam would walk in & out. Destroyed the cam and lifters. It did sound good at times though. Specs on that cam (dual pattern) lift in .528 ex .536 duration @50 in 234 ex 238 lobe separation 110. Maybe I should go back to that one.

Dan      Kingman Az.      86409

The Mummert 284 should sound good and shouldn't be too big for the street. Alternatively, custom grinds don't cost much more than production versions and should get you the best bang for the buck. Call comp, or whoever, tell them what you're after and have them tailor the cam to your engine, vehicle and desires.


Lawrenceville, GA

Dan, that .234@.050  110 lobe sep sounds like a good way to go, that's what I'm putting in my merc 312+++++. The .224@.050 is good for a stock engine without having to change the stall on a converter with an automatic tranny.

-Gary Burnette-

I think any cam over 240 @ .050" is a bit much for the street. But so much depends on personal preference, weight of vehicle, gear ratio, transmission and compression ratio that concrete numbers are impossible to provide.

IMO the F300 has too much duration for the amount of valve lift. You should get better performance with a shorter duration-higher lift cam.

http://ford-y-block.com 

20 miles east of San Diego, 20 miles north of Mexico

When I first brought the motor to the dyno shop, the dual Edelbrock carbs did need alot of tweeking. The guy running the dyno (Matt) worked for Edelbrock for many years. We had to change the metering rods and jets quite a bit. I have all that documented somewhere, but we had that motor on the dyno for 4 days. We had other surprises during that time too like the crank pulley dampner seperating at about 4,500 RPM and the dizzy flying apart on another pull. It's all good now, but I know I couldn't have dialed that motor in myself without the help of a dyno.

Rono.

  Ron Lane,  Meridian, ID

Rono,



I have two 500 cfm Edelbrocks on my 312. Can you give me the changes you made to jetting and metering rods? It would be a great help, as i am not a tuner.



Also what wheels are you using on your 56? Width Dia, and back spacing.



Thanks

Jim

  Jim Rowe Elkhorn, NE

The f 300 is too big for the street .This cam is a low lift oval track cam,made for"low lift rule" in oval track racing with lots of duration for high revving.TRy the RPM 300,it works well for the street and has a nice sounding idle.It will also have nice low end torque for quicker starts off the line,and it will still scream to 5500-6000 easily.Bigger cams need more compression.

55 fairlane gasser 312 /c4, 57 f100 292/c4, 52 mainline gasser 302/t10 4speed