|
Re: vacumm advance question
Posted by PICKMUP;
Quote:
I just went through this again today with a stock 71 3/4T w/402 & TH 400. I put in a used HEI...55degrees total from the mech & vac and 8 initial.
The thing pings BAD at crusing when you put a slight load on the engine...AGGH! It did not do this with the stock point dist & vac advance.
I pulled off the vac hose and took it for a drive this afternoon. The ping is GONE! and it runs just as strong as before. I did not get the adjustable timing light hooked up, so I don't know what the total is now with just the mechanical advance.
I would say if you are having this problem, try no vac and see if it works for you.
|
>>>I would say if you're having this problem,get AN ADJUSTABLE VACUUM ADVANCE and set it correctly and watch your fuel mileage and your part-throttle performance increase.
__________________
'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.
|