What is the biggest cubic inch motor I could put under a Cross--Fire Set up? I have bored out the TBI's and ported the Manifold? Where can I get a chip burned for the bigger motor?

Also do they make an aftermarket intake? And I was thinking of swapping in a T10 four speed---has anyone done this???

I know it's a LOT of questions, but I want to get this rolling before Summer ends.....

TBI's are 1.5 mill. bigger with stock injectors. Fuel pressure is currently set at 15 psi

 

Tom cfi400 has a 400.Ihope that is correct.Try a search or look for tom CFI.

 

YUP. I had a SBC 400 sitting under my CFI intake.

 

Who did your work as far as Computer and tuning and how big was the cam?

 

Hey there. It's all in my signature, but again, the ECM, and the PROM chip were stock and original. All the tuning I did to make it run well included changing injector sizes, fuel pressure, and utilizing a vacuum refferenced fuel pressure regulator, similar to those found on MPFI engines. I ended up with 75pph injectors, with a fuel pressure of 14.5 at WOT and ~10 PSI at idle (15" of vacuum @7000' elevation).

The cam was 224/234* int and exh. I don't remember the lifts, but the LSA was 114*

It would get me 25 mpg on the highway, and the check engine light never came on. I didn't ever check the emissions, because you don't have to where I lived in Maine, and now in Utah.

 

Thanks> All these questions were for a friend and he is really excited that this will actually work. It all sounds relatively easy. Coincidentally he is also a snowmobile freak and take at least 2 trips a year to Wyoming. Nice sled, he is also a Polaris nut

 

LOL abou the the sleds! Yea, I love that sport, nothing beats it IMO. Anyway, if your buddy runs into trouble, have him drop me an email:
tkendrick@thecanyons.com
Later!