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Old 01-30-2007, 12:12 PM   #1
fordguy67
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Join Date: Jan 2007
Location: Visalia, California
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Classic Mustang Problems

Hi.

I have a 1967 mustang that has a "Mild" 351W (with edelbrock 625cfm carb) mated to a B&M C6 Transmission (which has a 2,000 RPM stall converter).

My first question is:
The engine idle speed in "Park" must be astronomically high otherwise when I put the car into any gear, it will die. Is this due to the stall converter? I was under the impression that 2,000 RPM was just slightly over stock... Anyhow, it seems like the engine has to idle at ~2200 RPM before putting into gear, at which point the tires chirp and the engine drops down to 900 RPM. This seems like it is VERY hard on the transmission. Any help here would be a GREATLY appreciated.

My second question is:
The engine is very hard to crank over. I'm using a stock (brand new) starter which sometimes will crank the engine, and sometimes it will not. When it fails to crank, it sounds like the starter is "free wheeling" (its the only thing turning and not the engine). This seems to be more prominent when the car is cold. I've already had the starter bench tested and it tests ok. It's almost like the starter teeth aren't always engaging the flexplate teeth. Is this an offset problem, or is it a matter of too high of a compression ratio (10.25:1)? Thanks!

ME--->
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