It wouldn't work exactly because somewhere in the ECM it tracks the cylinder volume (at least my ls1edit did). If you changed the cylinder volume only, I don't see why it wouldn't run. It would be fine in closed loop, but in open loop it would suffer - especially on cold starts. In fact, you may never get it started.

That is just my 2c. FWIW, when I had my 2002 Firehawk, had heads and a mild cam on it running all the stock tables except for PE vs RPM and removed COT. It made 390/390.

-Geoff

 

No. Don't even try it.

 

this is odd!!! but i guess there is no stupid question's!

 

No, it really isn't. It would just give lazy asses a chance to be...well...lazy. If you want to do something half-assed, go ahead. You don't have my blessing.

 

you sir are an idiot. if you even got it to run somehow it would run like **** and put barely any more power down than stock. end of story, stop asking if it will work. go buy a carb if you cant deal with paying a few hundred bucks to have a professional tune you car. actually, better yet, leave it stock.

 

ummm.... moving to newbie tech since most newbies already know this stuff

 

The f'kind of forums has this guy been trolling?

 

The only way that will work is with a 89-93 mustang GT with the EEC-IV A9L or A9P computer.

You have nothing of the sort. The LS1 computer is NOT! adaptable like that. Not even NEAR to it.

 

With more cubic inches, you usually need larger injectors, and larger injectors won't run on a stock tune. It's that simple.

I don't think a 427 with a stock top end and stock tune would ever even start up.

 

You're talking cents compared to the thousands it will take to make a 427+ ci. You're looking at 3k for the block alone and you don't wanna spend 500 for a tune? You can still run big cubes with a stock cam / heads / intake with no problem, but you're going to need a tune reguardless. Unless you dont give a flippin' crap whether it runs good or not. I don't even understand the point behind this? All that money for something that will get out performed by the same car with just a cam and a tune? Pleass pass the grass!

 

You use larger injectors for more fuel at higher rpms, but if you keep stock injectors, stock limitor and stock amount of fuel going into the motor as stock, you'd keep the same fuel map as stock also. You need a tune to run bigger injectors and he doesn't want to tune it. uhhhhhhhh....yea.