doc

I have an '87 MAF car with the 165 ECU. I am in the middle of biulding a 395 cu in stroker engine using a 4 bolt ZZ4 block. Also, I have 1-3/4" SLP headers, SuperRam, will get a new cam, 24#/hr SVO injectors, 3000 stall Art Carr TC, 700R4 tranny, TTA fuel pump.

The MAF should support (flow enough air) more than 500HP and the SVO injectors at 56psi should support 370HP at 80%DC or 460HP going static.

I assume that all sensors will transfer over (temp, knock, etc) and the old 350 L98 ran pretty good with my last Eprom chip. The car ran a best 12.9xsec at Norwalk.

Do you guys have any suggestions for the Eprom???

91L98Z28

NOt really sure what you are asking/looking for here. The MAF/MAP thing has been beat to death, I'm not even going there, but you should read the archives to gain the info on how to make MAF work for you if you plan to stick with it. After the MAF maxes out you have to add fuel in other ways, and if you plan to make serious HP you may very well run into this.

The key component that will determine how radical you have to get with your tuning is the cam. If you run something like the LPE219 (tried and trued on 383's with superram and afr190s, results can only improve on a ~395), then you should have a pretty easy time of it overall.

doc

Yes, I do not want to visit the MAF/MAP stuff either. I know that I will be overwhelming the MAF, but I also know that I can add fuel per engine RPM. The 395 is about 15% bigger than the 350 so I expect some fuel changes are require for WOT. Also, I might need more cranking fuel for startup. The ECM should take care of the part throotle driving just fine via closed loop.

I intend to tune on this engine with the current ECM and see how good I can get it to run. Future changes might be a swap to MAP and/or supercharger. The SC would not be in the cards until 2005 at the earliest.

91L98Z28

with the afr190's and if you go for a big cam, you may need pretty signifigant fueling changes in the upper RPM's, a stock TPI is really chocked up there and with afr190 and supperam and big cam, you'll be flowing good. just something to plan on. maybe someone can post a relative comparison of their upper VE from such a combo?

you'll definately flow quite a bit more air than just the increase from the 350..