Hi guys, I got a 7730 out of a 6 cyl. Camaro at the salvage yard. I want to use it for a 350 TPI in my street rod. The memcal in that ecm is from a six cyl, I want to cut the chip out, desolder the pins and insert a new programmed sst chip. But how about that blueish gel part of that memcal. Is that part of the the knock sensor circuit? Is that memcal only good for a 6 cyl. ? I hope I dont need to buy another memcal. Any info appreciated. thanks.

 

You don't need to desolder the existing chip, just use a MEMCAL adaptor, such as the G1 from Moates.net.

The biggest issue is the other end of the MEMCAL, that is the CALPAK. There is a cyl select setting that is determined by the resistor network. Now there are ways to modify the CALPAK for proper cylinder selection. There is a thread dedicated to this in the forum. Do a search on MEMCAL modifications and it should come up.

 

Thanks sixshooter, I will check it out.

 

Hi sixshooter, sorry, I searched all them posts and didnt find nothing about changing the calpak resistor network from a 6 cyl to a 8 cyl., unless I missed it somehow. I wish I can find out how to do it. If I cant I'll have to buy a new memcal. What about those 2 chips under the calpak? How are they involved? Any further help will be greatly appreciated! Please help! Thanks, JoeK18

 

The large white board is not the CALPAK, that is the knock filter, the "chips" under that knock filter is the CALPAK, and theres a couple pins that get shorted.

Try searching using "Memcal" or "CALPAK" and other related terms, and the thread(s) will come up.

 

https://www.thirdgen.org/forums/diy-...es-values.html

Please post your results.
Thanks,