[Pete Munroe]

WillB,

I have ERA #2027.

Ran the fattest battery cable I could force through the chassis holes. Just short of welding line. Think it is a "#1 gauge" size cable. A kit from Jegs ?

The engine is a 289/347" with 10.7 compression, the starter a new geared after-market.

Battery is the largest Exide Gel-Cell that fits...600-700 amps cold cranking. Never the least issue with cranking hot or cold.

I DOUBT your issue is battery size.

If your car is FIA 289 #2019, you didn't assemble it?...that car was built in the late 90's. Time to check everything from battery forward.

Check the battery cable size. The run from the rear fender to engine is a LONG cable run...use AT LEAST the cable size ERA recommends.

Verify battery size, condition. Clean terminals, cable ends, etc till they shine and light lube with WD-40 or something.

Starter may be marginal. Brushes, amature, etc.
SOLENOID could be bad.

Is your engine NEW, REALLY high compression, real tight, etc?

Do not assume anything...brand new electrical stuff can be bad.

Hang in there,

Pete