Any one know how hot a cam Ford ran in the record wining “Cobra Jet” mustangs . ( ie : rice-Holman Ford Car ) ?
Better put : At what point ( lift / duration / over lap etc. ), number wise, should one say … it’s just not street able ?
Too hot a given cam will limit one’s " over all " enjoyment ( as in being stuck in traffic trying to get to the car show ) of the car. But lets face it … we all love the sound of a “race” cam . But lets drive our cars ladies and gentleman !!! And NOT make the excuse that "I have to trailer it, … it’s to much to drive in traffic ".
Soooo any one know of the ( numbers ) point of no return ?
Working on a 68" ( org.390 car ) cougar. Now building a 428 CJ ,ram air . Most likely will be using Edelbrock “power Package” : Alum. intake / heads ( just not too sure about the cam that comes in the “Package”) , headers, 3 1/2 in. pipes .
As a guide, I’d use Ford’s offering for a step-up hydraulic cam from 1969, the old over the counter “X” cam. The Super Stock Cobra Jets no doubt used proprietary cams from commercial cam grinders, but the C8AX cam was what Ford told weekend Stock (not Super Stock) racers to use. See page 8 at this link for its lift/duration at .100. Ford’s Super Stock cam (or what they sold to you, anyway) is described on page 14, same link, and it was (surprise) solid lifter.)
235 degrees at .050 is probably about as far I’d want to go for the street. Currently, I run a cam that has 233 @.050 with a 113 lobe separation in a 460 in my 70 Cougar. It has a C-6 with a stock convertor and a 2.75 gear. More gear and higher stall would make it better at the track, but also make is less drivable. More cubes and the wider lobe separation help with drivability.
Is your car automatic or manual trans?
I run 234/238 duration @.050" with 110 lobe separation, .622/.626 lift, hydraulic roller in my 408C. It too is about as much as one would want to run on the street. I use an auxiliary vacuum reservoir to help out the power brake booster, works pretty well.
