Im helping out a friend and burning him a chip for his new set up but he has no carrier. His stock broadcast code is a BJLF. So I have a spare BJLH memcal which Ive modded with a socket in place of the stock chip. All i need to do is change the prom id to match the BJLH prom id correct. Both are from 94 TBI 350 truck applications. Thanks.

Josh

 

Hey Josh, how's it going. Your modded Memcal will work fine with either BCC. The Prom BCC is the only difference in 350 Truck TBI Memcals. The other components in the Memcal are the Knock filter (this is the white PCB and is tuned for a specific knock sensor which is different from a V-6 to 5.0L and 5.7L etc.), and Limp home resistors (aka CALPAK and NETRES, also engine specific) which reside under the knock filter. To make a long answer short, as long as the Memcal came from a truck with the same engine, it will work.

 

HaulinA$$

Cool thanks. Not much goin on. SSDD here. I thought that the calpacs were different and that if they didnt match up it would throw a code for prom/calpac mismatch. I "thought" the older 7747 stuff was the same way so i assumed that the new stuff is the same. But I guess that thinking got the best of me. Need to stop doing that. Makes my head hurt

Josh