Roller cam engine hei distributor gear

[toddball]

Got my new blueprint roller cam vortec engine running. I bought a new hei official gm crate engines from proform because it had the melonized gear. That hei lasted 5 minutes (no spark), so I want to know do I just swap a dist. gear from a vortec 95-98 block to my old hei? How do I know which gear is already in my hei?

View attachment Snapchat-1613197432.mp4

 

[Bent77]

Pull it and look
Drive the pin out of the gear and put the other gear on. Make sure the pin is flush when you are done.

 

[toddball]

Ok i took the old gear off, but the new one won't fit? Diameter is different. Is my old gear ok to use? It's a aftermarket hei few years old I forget which model

 

[Wes Harden]

Depends on material it's made from

 

[toddball]

The gear i bought is .43, the shaft is .49. I also have an accel hei and another aftermarket one? Anyone have a part number for a gear that will work for roller cam?

 

[nvrenuf]

Iirc, there were 2 sizes of gears when I swapped mine. I had to measure and order appropriately.

 

[dyeager535]

Used an original 1988 Camaro distributor (stock roller cam) with an aftermarket roller cam then in a stock L31 with no wear for at least a decade.

I'm pretty sure the gears back then were dimensionally all the same.

 

[toddball]

The distributor I have, DST1895, already had a melonized gear, engine is running great. Got to drive it up to Cripple Creek this weekend.