I am building a motor and the specs by desktop dyno say the motor will give me.

473hp@ 6000RPM
459torque@ 5000RPM

i know thats not the wheels or real accurate but it's pretty close. what size injectors should i was?? thanks for any help

 

I think we need more info, cubic inches, heads, cam, what TB you are using, it will need to have a custom chip thats for sure

 

Doesn't matter what size injectors you use, that kind of power will never be supported by a 2bbl TBI unit, it just will never happen. Look into something more like a 900cfm 4bbl TBI unit.

 

ya i know i just wanted to know for what i havbe what would be the best setup?? thanks for the response though

 

sorry i started writing then got tired so i delete all the info. here ya go

350 bored .020 over 10.22CR , ported 441 heads, Lunati 54762 specs to follow, 454 TBI, headers from dynomax, crane ingnition, and i'm probubaly getting tbichips to make me a chip.

2200-6800RPM
duration @ .050
int. 242/exh 252
lift
int .525/exh .540
110 sep, 106 c/l
15 btc 47abc
60 bbc 12atc

 

You're going to want to look into a different cam. You've got a lot of duration with that came and that 110 lsa will make it near impossible to tune I would think. You shouldn't go with an lsa anything less than 112.

 

I agree, With that cam (and anything over 230 duration at .050) your asking for alot of trouble. TPI can handle a big cam easier, just cause of pultipoint injection. YOu'll run into off idle stumbles with tbi. With that combo you posted, with tbi, you'll need a 100 shot to get 473 horses.

Take it from me, my cam causes me alot of head aches, and a mail order chip won't get you tuned close enough.

 

changin the cam to a lunati 501A3LUN
this is what herald told me to get. it one of there new cams not in there catologs yet. But it is on the internet

 

has anyone had any success at all ordering a chip for a significanly modified engine? I bet it takes 10 reburns by the chip seller.

 

I personally dont think its possible to get a mail order chip that will work for a modified engine. Theres just too much stuff that can be combined in too many ways to make chips that will cover everything. Also given the point and click tuning capabilites of todays software makes mail order chips well and truly obsolete since jsut about anyone can program a chip. The quality of the contents on the chip arnt assured but its easier then ever to do it.