I am building a TPI motor for my s10 and am having trouble tracking down the right distributor for it. I am wanting to use one of the large HEI units. Is it possible to piece one together using a vacum advance HEI or maybe one from a TBI motor and just replace the the module that hooks up to the wiring harness?

 

i have a stock 87, tpi dizzy if your interested? idk, if you can fit a large cap dizzy in there or not.

 

i got plenty of room for the large HEI. just having problems finding the right one. i have a HEI from a TBI motor but the plug is different and im wondering if i can just replace the module inside the distributor with one from the parts house.

 

The early tbi hei's will work , in tpi f- body's they were used in 85-86 and in vettes 85-91. you can use a acdelco 19179581 {#10482832, D1961A}. A cmaro and corvette icm will allow rpm limiter to work with the memcal reprograming , tbi's will not.

http://www.ebay.com/itm/DELCO-IGNITI...08f07a&vxp=mtr

http://www.megamanual.com/ms2/GM_7pinHEI.htm

 

If you are using a roller cam don't forget to change your gear.