Here's the deal: '62 cast iron 225, automatic, 3.23 rear, 14" 215 by 60 R tires, ported and polished shaved head (.100) with about 9.2 to 9.4 comp. ratio, 1.6 roller rockers, 340 valve springs and retainers, Transistor ignition, hot coil, Dual Dutra Duals with 2 mufflers through 2.25 exhausts, offy 4 bl manifold and 500cfm Eddelbrock with K&N air cleaner and filter---

The choice seems to be a (solid lifter) cam with either 252 degree or 264 degree duration. The roller rockers increase the lift a little, and the torque a little. Both cam profiles promise a "smooth idle". The 252 brings on torque a little earlier, but the 264 holds it at higher rpm's. I don't want to have larger valves or higher stall converter unless absolutely necessary. I want the car to be completely streetable, but able to pass a slowmover doing 45mph on a two lane road, and preferable turn high 15's/16 flat @80-85 mph, for my '62 Valiant Signet.

So, what do you think will be better to do all this: 252 or 264? The faster the better, without sacrificing lowend torque. Any better alternatives or special cam profile recommendations? THANKS!!!!!

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Restored '62 Signet, 229 4bl, Offy intake, auto, Dual Dutra exhausts, shaved head and block, high stall converter, 1.6 roller rockers, etc.

Boy, this one is a hard one to call...
You have all the "goodies" to support the 264 but if you want super strong low RPM pull you should go with the 252.

One option is to ask Crane what the lobe center is on the 264 and have them grind one with a wider L/C (like a 112-114 L/C)

Is anyone using a differnt cam with nice strong low speed and mid range power?
DD

I think the numbers are for comp cams...if so the LSA is always 110 (good compromise)... Crane I think has a few in that range that are like 110 or 111 LSA, but I think Crane also dropped their 'blanks' for slant sixes last year....

tough choice/your call....

-D.Idiot

I heard last year that Crane sold all their slant 6 blanks.
A few weeks ago, I filled out their on line cam recomendation form. The reply I received was they can only grind a slant 6 cam on your good core.
Looks like no more off the shelf Crane cams.

Cecil

If you really want to get your cam right, contact Ed Curtis at:

www.flowtechinduction.com/

He is on the leading edge of camshaft design. He has done research work with CompCams and they, in fact, use lobe profiles he has designed. Ed gets great results and will get the most out of your engine combination.

Please note I am not affiliated with Ed in any way.

Mitch

sounds like you did what I did for the most part. I went with a comp custom cam its a .500 lift(with my 1.6 rollers) and 224@50 duration 270 adv. I went with cliffors headers and a clifford shorty 4bbl my valves are 1.77int 1.56 exaust valves. I am not sure on my springs they are being changed right now. I am running 9.1 to 1 compression and not sure on a carb yet but thinking of a demon jr 525 cfm any way a few desk top dyno programs project an avrg. of 270 hp at the crank. I am not too sure on the acuracy of these programs but it sounds fairly hot to me