The Stovebolt Site Forums The Shop Area Engine Shop Gas milage on the 235's

Richie Blue,

You asked about Chevy engine specs....I've found the following sight to be helpful and fairly accurate, with one exception....all 235 standard engine distributor rotation is clockwise. Check out their info at:

http://www.secondchancegarage.com/public/468.cfm

Also, you want to be very careful about crunching your numbers before you go swapping rear ends. Use this page to juggle your numbers until you're going to be at your normal cruise at about 2100 rpms....the 235 with basically a stockish cam is going to be happiest, with the highest vacuum reading at a steady speed, around that rpm when at cruise. That gives you a couple of hundred rpms above and below that number where your engine will be operating in it's optimum performance range. I like this site:

http://csgnetwork.com/multirpmcalc.html

Remember, my practical experience has shown that the 235 makes good power and torque in a range of 1700-2400 with the sweetest spots between 1900-2300. Cruising below or above that range is just going to be cutting into performance and fuel economy.

Dave