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Old 09-15-2012, 04:07 PM
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Fix the starter first (heat shield, remote ford solenoid, battery, cables ground)
Then install the interupt toggle switch. its easy. make sure the OEM starter brace is installed.

What about hooking up to the manifold vacuum vs ported vacuum to help add 10-12* to the base. Would this help me achieve the 24-26* initial timing?

This works on manual trans cars that idle with no load but not auto trans cars that have to idle in gear.
This pulls the manifold vacuum down at idle in gear which causes the timing to drop off.

You need a solid non wavering 24-26deg at idle, in gear, that does not jump around.

To test your starter disable the spark and kick the motor over when hot. If the motor still cranks slow with no spark the starter or cables or battery is fubared.
if the starter will crank the motor while hot, while spark is disabled, use the interupt switch for hot starts.

The motor and headers will idle cooler and much cleaner with this increased idle timing. But you will still need a starter heat shield.
The starter motor and or the starter solenoid may already be cooked from excessive header heat and lack of shielding . In that case the only cure is to replace it.

the new style small body starters 97ish LT1 gen II corvette motor allow much more air gap from the hot headers (still need a shield) and have a gear reduction drive. GM finally got their act together with the starter motor hot crank issue.

The simple $10 ignition interupt toggle switch works. If your starter brace is missing, get one.

Last edited by F-BIRD'88; 09-15-2012 at 04:27 PM.
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