How hard would two 454 TB's be to use with the stock wiring harness?

 

Wiring probably wouldn't be too bad. I'd say just paralell wire the 2nd pair of injectors off the first, but I honestly don't know if thats a good idea or not. Now getting it to actually WORK, that might be another strory! That sounds likea PROM tuning nightmare to me, but I'm sure it could be done. I've seen the dual TBI thing come up before 2 or 3 times I think.

 

2 issues to overcome.
1. the voltage signal will get cut in half when you spilt the wires to the injectors.
2. you woudl have to split the fule supply to the 2 tb's where teh lines come up from the frame rails, before it goes through any regulator. you will likely hafta step up the pump to feed both sets of injectors.

the linkage woudl be really basic to set up and th eret of the sensors and ecm could be set up normally. the voltage to teh injectors is really the tricky part.
holley does sell a computer and wiring harness for a small fortune that is designed for this.

later
tim

 

Do a search on Dan W's posts. There has been problems at higher RPMs trying this so far with the at home methods.