Will a Prom for a 1989 Corvette Automatic car work allright in my 89 Formula 350 ??
Both L98 350 's with 700r4, both MAF cars, both have VATS.
What would be the real difference?
I know the vette would have had the aluminum heads and maybe a different gear, the compression difference wouldn't effect the timing that much since the heads are aluminum and don't retain heat as much as iron ones right?

 

The opposite is true...the aluminum heads can run more timing than iron heads because they don't retain heat as effectively as iron. In some cases, the al heads *need* more timing to get cyl pressure to max as the piston passes TDC.

The main risk of running the extra timing the Vette chip will have on your iron-head F car is detonation damage.

 

From what I have gathered after talking to alot of other PROM burners, a Vette chip will not work. I don't remember the exact reasons, I'm sure if you asked them in the DIY PROM board, they could tell you specifics.

EDIT: Now that I think about it, it might be the Speed Density L98 vettes that I'm thinking about, since they used a different ECM then the F-bodies.

 

Can a moderator please move this to the DIY prom board for me? Or, should I just repost it there?

 

Yes it will work. I use my version of the APYP bin in my 86 IROC. You will have to diasable the oil temp flag in the bin or you will get an SES.