TBI motor setup. Am I leaving any thing out?

[y5mgisi]

I plan on doing a motor build for the 90 sub in the not to distant futer and this is what i have come up with so far.

383
forged pistons (probly dished for about 9:1 compresion)
LT1 conecting rods
vortech heads(possibly ported and behive springed)
edelbrock or GMPP tbi manifold(for vortech to TBI)
454 throttle body
adjustable FPR
tri Y headers
dual 2.25 inch exaust
and a chip if needed
and a comp cams 12-304-4 cam(700 to 4700rpm powerband and is said to be stock chip friendly)


What do you think am i forgeting anything important? Will i need a chip? Any feed back would be cool for planing. /forums/images/graemlins/ears.gif

 

[Derf00]

Fuel pump and a modified chip.

 

[y5mgisi]

I have heard that when you use the 454 throttle body that you actually would want to turn the fuel presure down because the 454 injectors flow more /forums/images/graemlins/thinking.gif

 

[js4x4]

Yeah, if you have a fuel tank from a GM that had TBI, the fuel pump is in the tank. If not, you can pick up an external.

 

[y5mgisi]

yep the tank is an origanl that allready has the pump and baffle from the TBI /forums/images/graemlins/cool.gif

 

[sled_dog]

yes 454 injectors are 85 lbs/hr vs the 55 of a standard 350 injector.