Thread: Yet another cam question.. 292H Cam?

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Kurt has given you the correct answer.
The camshaft in any motor is not a stand-alone piece, it has to be matched with all the other motor and drivetrain components that comprise a "combination" of parts that will work well together toward a common goal. The very first thing you need to know before you begin to choose a cam is the exact static compression ratio of the motor. Knowing this will allow you to choose the correct intake valve closing point to make the proper cylinder pressure for the fuel you plan to use.

The Streetmaster intake is a fuel-mileage/throttle-response piece from the 70's that will stall just about the time the motor would be gettin' up on the cam with the 292 cam, so it would not be a good partner to the cam.

The 3.10 rear gear won't work well with that cam either. With that gear, you need a near-stock cam.
You'd also need a very loose converter to use the 292 cam, like the timing card says...3000 rpm stall minimum and a 3500 would work better. Figure on paying $500 to $800 for a good converter, such as a Hughes. (Jim Hughes and I have been friends for a long time, he makes good stuff).

Here's the timing card so that other members can play along......
33-240-4 - Magnum
You see where it says "use 9.5:1+", well what they mean is MINIMUM 9.5:1. Here's a rule of thumb chart that I wrote and it shows that you'd be better off using 11.0:1 with this cam.....the 9.5:1 would yield a very weak dynamic compression ratio and very low cylinder pressure (a dog).
http://www.crankshaftcoalition.com/w..._compatibility

If you want a performance boost you can feel in the seat of your pants and a muscle car idle, install this cam and change the intake to an Edelbrock Performer RPM.....
http://www.compcams.com/Company/CC/c...?csid=932&sb=0
http://www.summitracing.com/parts/EDL-7105/
Both the cam and the intake come on at 1500 rpm's and will pull hard to 5500. Install a 14" x 4" air filter so the motor can breathe. This suggestion assumes that you built the motor with a static compression ratio of 10.0:1 or a little less.

Be certain to degree the cam in according to the cam card, Ford had some spooky crank gears in the past with several degrees of cam retard cut into them. Here's everything you need to know to degree the cam....
http://www.iskycams.com/camshaft.php

Also, here's a tutorial explaining the precautions that must be addressed in the installation of a flat tappet camshaft.....
http://www.crankshaftcoalition.com/w...ips_and_tricks