That camshaft will want somewhere around 14-16 degrees initial at idle. Then another 16-20 degrees mechanical advance by 3,000 rpm for a total (without vacuum advance) of 32-36 degrees.
Your approximate 1.66 rotations of the driveshaft would indicate about a 3.23:1 rear gear ratio.
Got all the parts in, new custom camshaft and everything. Going to pick up the block and balanced rotating assembly tomorrow. I'll get to share the results of the rebuild with everyone but the owner, he died 4 days ago. Damn.
Now have another 1970 standard bore 340 block out getting align honed, decked and bored to +.030". There was a standard/standard forged crank setting in the corner with a coat of surface rust that we'll take to .010/.010. Ross forged pistons and Scat rods going in. We'll redo the previously...
The relief driver was right, the oil pressure dropped immediately. The bearing material seized the oil pump and broke the hex off the intermediate shaft. Instantly no oil pressure.
So the owner has back surgery and cannot drive or shift the 4-speed for very long.
Yet he just has to go for a ride so he enlists a friend to finish driving when he gets tired.
The friend is so worried about driving a car as valuable as a T/A he spends most of his time watching gauges as he...
You might call Todd Marsh and see what he could set you up with.
mopartsracing - Sidewinder Cylinder Heads For Big Block Mopar
And there is ProMaxx
PROMAXX Performance Maxx Series Big Block Mopar Cylinder Heads 9440