HEI identification help

[Marvin Barton]

I have borrowed an HEI to do some troubleshooting on my 1979 L-82. It is #1103436 and the owner can't remember what it came from-but doesn't want to sell/trade it. The weights/centerplate allow me to get 36 degrees total advance by 2200 rpm with only 10 degrees intial so I'd like to find another one or at least a set of weights/centerplate to install in my original HEI. Any assistance would shorten my search at the boneyard and will be greatly appreciated. Thanks in advance.

Marv-

[Duke W.]

Re: HEI identification help

You can buy different springs from aftermarket hot rod shop shops and mail order houses, which would be a better idea than trolling through junkyards. I don't think any OEM HEI systems from the emission era had curves that aggressive.

Springs are interchangeable with the single point/TI system, and the springs from the late 64 and 65 SHP/FI engines will provide full advance at about 2500 depending on the weights used.

Duke

[Clem Z.]

Re: HEI identification help

if you buy a aftermarket weights make sure they are hardened,check them with a file because unhardened one will cause wear on the center post cam. most HEI advances can be can be speeded up by removing 1 of the springs as this will make the curve go full at almost twice as fast which would be close to 2000/2500 RPM