I'm planning to do multiport on my 73 corvette with 454 engine. Currently, I have a 747 with a Holley TBI. I plan to use the Holley TB, minus the injectors, with my multiport setup. I already have a 730 ECM, but need to get a memcal. So, what is best. I assume that if I keep my ratio of injector sizes roughly the same as the ratio of engine sizes, limp home mode should work (not that important to me). I think I will need 32+ lb/hr injectors. A couple of questions:
1. What are the sizes of the injectors in stock 305 and 350 engines?
2. Which memcal would be best to start with, 305 or 350?

Thanks,

 

AUJP for auto
ANHT for stick

About all they are good for is limp home, and the cyl select.

Tunercats software I believe has entries for the cyl displacement and inj constant. Do those changes and then try startin the motor with it.

You can get a couple sets of GN injectors that are 30s and try them and then better guage what your really going to need.

 

Grumpy, you have to keep a better eye on Doc!

ANHT is an auto bin, use AXCN ('91 vette bin) for a stick.

RBob.

 

I downloaded AXCN.BIN and AXCN2.bin from the ftp site.

Now, the memcal question. I understand there are two V8 memcals available from GMPartsDirect (and I have verified it):

16151348 for 350
16163075 for 305

Does it matter which I get, or do I even need one if get an adapter from Craig?

 

I don't know. Both will have the correct cyl select. As far as which would work better limp home wise, can't say.

RBob.