Ok, I've been looking at all my options for a tbi base and I just keep getting more confused. I in the planning stges for my motor and hope to be in the 375hp range once done. What would be my best choice for the tbi?

The Holley 670tbi
The GM big block tbi, there are 2 different bases which is best?
There is a guy on ebay selling bored out sbc tbi's which are 50mm(right at 2inches)
Turbo City sells a bored out bigblock GM base that is 2 1/16 inches

For a 350 making the horsepower I'm looking for which would be my best option and why? Take into acct. mods req. to make it work and horsepower potential.

All input is welcome. This is just to help decide on the base, I'll worry about injector size later.

Thanks, Mike

 

You can't go wrong with any of them. The 670 and 454 will require some fab work to the linkage and some sensors. The one off ebay will be a direct bolt on because it is a stock unit that is bored out. I have yet to see anyone use one of those but they can't be that bad. If they are as good as they sound then they will be perfect because you just slap it on without any fab work.