Waking Up a Turd

AJ/FormS said

There's the rub.
@Mile Maker
Where exactly are you in Alberta or at what elevation?

With a 284/284/108 in at +4, you'd be looking at an Ica of 66*
At 2250 ft, with a TRUE 10/1 Scr, and an Ica of 66*, you'd be hoping for 148psi.
If you truly had 148psi, your bottom-end take-off would feel like a 318Magnum to about 3000 rpm, which with 275/60-15s and 3.23s is about 30mph. 5000 in first is about 48 mph, and second will get you ~80
That cam is barely waking up at 5000. It might powerpeak at 5400, and the 1-2 shift might want to be at 6000.Second should pull to 92@5700. If you stick it in third you'll probly lose ET.

At this point, shifting at 5000, you could probably go faster with a cam two sizes smaller. You need to rev that thing!

Click to expand...

I am working on replacing the shifter cable, so i can manually shift it again. The new one is on my bench.
I think the intake is so miss matched, that it really doesnt feel like its pulling hard anymore above 4300. also the 650 carb is likely hurting things as well. although i suspect with a regular dual plane intake things will balance out better. Currently with the dual port design , i had to ritchen up the secondary's a bunch.

Once i find out for sure what cam it is, Where is the line between en edelbrock performer vs RPM? I know its a purple shaft, as i had the intake off to fix a vacuum leak before. Its a lumpy idle, And i can only pull 9-8" of vacuum at idle. I had to give it 18 Deg of timing to get that much vacuum.