Oh, I've gone round and round on my tuning and temps. I have it dialed in well now. I was running 210* at 3,000 RPM before. I have at least 2 full, long threads on the subject.
Short story: replaced restrictive electric fan with Extreme Duty Hayden mechanical fan, spring modified, 18.5" blade fan. NEVER runs over 180* at low speeds or idle. No shroud necessary.
Tuning is really dialed in nicely. Starts right up, runs great all over, eliminated highway speed 'trailer hitch surge' thing, no pinging, etc.
16* @ idle, MECHICAL advance
24 @ 1500 RPM
31 @ 2000
32 @ 2500
36 @ 3000 (all in)
Plus 10* vacuum advance using modified unit with .12" travel per Cliff which worked like a charm. (car hated ported vacuum advance). Runs clean, idles smoothly, doesn't smell. If memory services, I went with P/N #1850/AR20 advance can. I'd have to double check my notes on that one. It opens with 4-6" of vacuum.
I'm good.
__________________
Adam
__________________
1964 LeGTO
469, M21, 3.42
__________________
Sold:
1968 Pontiac LeMans Convertible
See it go HERE
Last edited by AdamIsAdam; 11-09-2017 at 12:25 PM.
|