399/445ci Stroker Motor Dyno

So please excuse my wandering video, but we are very pleased with the results of this motor. This with our ported C8AE-H iron FE heads.Flow numbers for these heads were 268/201 at .600 lift. Contact us if you are interested in what we charge for the porting on these heads.

The AFR curve was almost flat. Great results with this QuickFuel 735VS Carb. We used this carb for the slightly small primary venturies with stock 68 jets for good cruise mpg, and nice throttle response off the line. Oil pressure was awesome! Tuning was very straightforward. Made the most power at 39 degrees total advance.

• Made 443HP @ 5200rpm and 507 Torque at 4000rpm with iron C8 small port heads.
• Cam we used was relatively small.
• Hyd flat tappet cam with stock non adjustable rocker assemblies. Just installed studs to secure to heads.
• Valve spring pressures were 100# closed, and 270# open.
• Cam specs are 221/229 @ .050 with .536/.552 lift, on a 112 Lobe Sep for good vacuum.
• Compression was 9.95 to 1 pump gas friendly.

The focus on this build was reliability along with great street cruising manners, good vacuum for the power brakes and cost but a motor that would still perform very well. She idles with 15” of vacuum at 900rpm!

According to Wallace, this motor will put this ’67 Galaxie in the very low 12’s @ 111 mph, in the quarter mile. In a ’67 Mustang, it would motivate to a tune of 11.40’s @ 119mph. That’s pretty fast for a very mild motor!

Click here to check out the Dyno sheet.