Took the Chevelle for a good long drive today to sort out a few more fuel/timing parameters.
A quick run down on my combo:
1970 Chevelle with power steering, power brakes, A/C, cruise control
10.5 to 1 505 Promaxx heads, Straub Tech hydraulic roller 250/260 @ .050 .640 lift LS 108
Edelbrock ProFlo 4 fuel injection
2" Dougs headers, full 3" exhaust with Dynomax mufflers
700R4 trans, FTI 3600 rpm converter, 3.73 Moser 12 bolt
72 degrees and sunny, perfect day for a cruise and a quick bite to eat. Had to go to an adjoining state to find a place to sit down and eat but it made for a good 150 mile round trip test drive.
Highways varied from 75 mph interstate to 50 mph back roads along a river. A lot of stop and go through small towns.
Cooling system worked great. 180° coolant temp on a 180° t-stat. Fans didn't run most of the time.
Oil temp ran from 185° to 215°. Keeping an eye on that as the block is partially filled.
A/F ratios held very well with short term and long term trim rates in the mid to low single digits. Still working on a slight stumble/surge on initial throttle opening from a stop. Manageable but not right yet.
Trans working well, I want to get my 3-4 shift a bit crisper, gonna look into the accumulator settings.
Overall quite pleased. Still have a cold start issue that I am working with Edelbrock on. Can't seem to get enough crank fuel for a quick start. Could have something to do with a lot of overlap
Runs smooth and quiet on the highway. Filled before leaving town and refilled when I got back. 110 miles/8.11 gallons of 93 octane = 13.56 MPG
Seems to be a keeper. Now to see if I can get it down the quarter mile without breaking anymore parts!