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Great work Dmerc. I've always had a feeling Tquads had potential. That cam is probably helping too. Does it run clean under 2000rpm?
Can't wait to see your before and after vacuum advance numbers too.
Is your comp ratio 10.5 or 8.5 to 1.
I've cracked 20 also. My 87 Ram, reg cab, shortbox has a 5.9 Magnum, 670 Holley, M1 dual plane, short headers. Then a 5 spd manual w 0.73 od and 3.55 gear and a 28" tire. Straight highway at just under 70 mph has returned 23 mpg. I'm pretty sure aero dynamics is my biggest roadblock in the quest for mileage.
Car idles like a stocker with that cam. calculated compression is 10.5 to 1 but that is a lot different than the dynamic(Actual)compression. The dynamic effective comp ratio is 8.5 to one
The 700R4 trany does have a lock up converter and I haven't really beat on it so only time will tell how well it will hold up. They aren't know for great strength but my goal was to build a quick hotrod not a race car. I'll get it to the track soon. Using very conservative HP numbers it should run 13's at 5000 ft (if the trany doesn't explode!)Forgot, I'm also running the M1 dual plane manifold. It's a perfect match for my set up.
Last edited by dmerc; 09/22/09 08:29 AM.
