Hi guys,
I'm running a standard 350 with carby. While driving, I have a surging between about 13000 and 1700 rpm on both unleaded and LPG.
I'm pretty sure it's vacuum related.

If I post the engine number, is it possible to tell what model and year I'm dealing with?
I may then need a vacuum diagram to help chase down the problem.

Thanks in advance.

 

i have a list of block numbers, if you either post the numbers or e mail me direct i can look them up for you and let you know where and when it was made.
frank

 

www.mortec.com

 

Thanks guys,
engine number...3970010
head number...333882

 

185 hp, '69-'79 found in cars, trucks, for engine
heads are '70-'80, 76cc, 1.94 intake/1.5 exhaust valves. this block and these heads are the most common used thru the 70's.

 

Thanks for the replies.....

I have a Rochester carby, would this 1970-80 engine/carb combination all have the same vacuum system?

Any suggestions for locating a diagram?