HEI Problem

[tincan1966]

Originally Posted by T.J. MCCAULEY

I just received my new HEI from SpeedMaster. 65K coil. I am thinking of running a 12 gauge wire from the battery to a 50 amp switch, then to the distributor. That should be enough voltage?

Why would you not just wire it to the ignition switch?
The ignition system will not draw anywhere near 50 amps.

Those high power ( or advertised as such) ignition systems are really a wasted effort, unless you have the engine to really need it.

[TJ's Chevy]

Originally Posted by tincan1966

Why would you not just wire it to the ignition switch?
The ignition system will not draw anywhere near 50 amps.

Those high power ( or advertised as such) ignition systems are really a wasted effort, unless you have the engine to really need it.

Ok...I'll try that. Yer talkin to someone who is electronically illiterate...well..maybe not That bad...but...lol! Thanks.

[Rich 5150 69]

Originally Posted by T.J. MCCAULEY

Ok...I'll try that. Yer talkin to someone who is electronically illiterate...well..maybe not That bad...but...lol! Thanks.

Tie directly in the pink wire from your iginition switch straight to the HEI, thats how mine is 22 years ago.....

[Sharps40]

You can tap into a full 12 volts easily at the fuze box using one of the "Ignition Unfused" terminals. Or you can tap a full 12 volts from the ignition switch as indicated.

I believe you can then eliminate the wire runningh from the starter to the dizzy...

I'm guessing with full time 12 volts you are 97% percent fixed.....after that, with luck, it'll simply be inspection and tuning.

[TJ's Chevy]

Rich...is this the pink wire you are talking about???? 1st picture. Second picture....I noticed on my fuse box where my finger is pointing..it says "Ignition unfused" will that supply enough voltage to the hei? And or work?

[Rich 5150 69]

The pink wire from your ( after ) ignition switch, anything before that is not swtched...back of your switch will be marked ign or run.
This pic from Cragers post, ign post at the 11:00 position...

[gimmy 64]

don't run it to your fuse box extra terminal. follow the pink wire back to the fuse box and install it there. you may have to remove the fuse box+

[AMERICAN PICK-UP]

Bump

[TJ's Chevy]

Well...my new HEI works like a dream. I ended up hooking it to the starter solenoid. Works great, burns the fuel no issue. Plugs are now running a tad hot, but since I run 92 octane I should be fine. All the wiring around the valve cover and by the starter has been loomed up since the picture was taken.

[grs]

Originally Posted by T.J. MCCAULEY

Well...my new HEI works like a dream. I ended up hooking it to the starter solenoid. Works great, burns the fuel no issue. Plugs are now running a tad hot, but since I run 92 octane I should be fine. All the wiring around the valve cover and by the starter has been loomed up since the picture was taken.

Why are you using 92 octane?

[TJ's Chevy]

Originally Posted by grs

Why are you using 92 octane?

When running a hot spark, and big carb..you want as much octane as possible. Especially when your spark is advanced. Low octane will cause pinging or detonation, which will result in severe engine damage. Older engines like high octane low ethanol. I run 92 E10...which is highest you can get for under $4 per gallon...we have a station that sell 100 octane...but its at over $5 per gallon. Anytime you run a performance engine or performance parts on your engine...running better fuel always pays off.

[grs]

Originally Posted by T.J. MCCAULEY

When running a hot spark, and big carb..you want as much octane as possible. Especially when your spark is advanced. Low octane will cause pinging or detonation, which will result in severe engine damage. Older engines like high octane low ethanol. I run 92 E10...which is highest you can get for under $4 per gallon...we have a station that sell 100 octane...but its at over $5 per gallon. Anytime you run a performance engine or performance parts on your engine...running better fuel always pays off.

I use Shell high octane in my new cars once in a while. It cleans the fuel injectors.

[Irishbleueyes]

Originally Posted by T.J. MCCAULEY

Well...my new HEI works like a dream. I ended up hooking it to the starter solenoid. Works great, burns the fuel no issue. Plugs are now running a tad hot, but since I run 92 octane I should be fine. All the wiring around the valve cover and by the starter has been loomed up since the picture was taken.

Nice engine TJ, whats your compression ratio?

[TJ's Chevy]

Originally Posted by Irishbleueyes

Nice engine TJ, whats your compression ratio?

Bout 95 in all cylinders last I checked. Brand new from factory was 8:0:1...and that's MAYBE 130 pounds....so...runs good.