Rhoads Variable Lifters. . .Auto-X/Road Racing???

[atomicjoe23]

Thanks Ron. . .the car will primarily see street & local auto-X (once a month) use for at least the next year so I will probably stick with the smaller cam.

A racier motor may be in the cards, but not until I've improved my driving and the engine starts to hold me back. . .might be a while.

[atomicjoe23]

Ron & Greg. . .this thread has morphed into a cam discussion, but that's fine with me. . .

. . .how would you guys compare this Edelbrock cam ( http://www.edelbrock.com/automotive/...2157&submit=go ) with the smaller Comp camshaft ( http://www.compcams.com/Company/CC/c...csid=1215&sb=2 )???

On paper they are VERY similar, but I don't have enough experience to know how much difference the small differences on paper between the two would make?

I'm looking at exhaust systems right now as well. . .at the moment I'm looking at a Magnaflow system and I have a choice of 2.5" or 3" systems. . .would selecting the 3" exhaust have a negative effect if I have a relatively stock engine (with one of the two cams above; the car already has headers on it. . .I think they are Hooker headers, but I'm not positive because they came already installed on the car and they are wrapped)? I'm just thinking that I would eventually want/need the 3" system when the engine gets modified if it wouldn't adversely affect the engine now.

Thanks again for the help!

[GregWeld]

Just at first glance the Edelbrock cam is rated at 500 RPM higher than the Comp cam -- but otherwise they're pretty similar.

Cams also depend on SO MANY OTHER factors -- head flow etc. A lot of times people get a cam that will flow more air than their heads can handle!! LOL


As far as the exhaust system goes --- A 2 1/2" systems is generally rated to handle LESS than 500 HP.....

A 3" exhaust system is rated at 700HP plus.

The Edelbrock cam says that using their matched parts will create 387HP.... and a Torque number of 439 Ft lbs.... nice and torquey that's for sure.