guys looking for input. I own a 1995 Z71 350 TBI w/5speed. Its always been a dog. I built a 383 (about 400 horse) brodix headed small block on a one piece seal block for a play car.

Question is, after speaking with a chip burner he said that he could not reccomend tbi with the aggressive cam in the 383. I want to swap the hot motor into my truck and he suggested to leave it carbed and non computer ignition and pull the computer.

What all would i have to do with the truck to swap the 383 into my truck. I know all the mechanics but am wondering about what all would have to be done electronically/fuel/ disconnected and such.

 

Pretty simple

Locate the fuel pump relay, there are 5 wires. Locate the dk grn/wht wire which goes to your old PCM. Tee an IGN wire to this

Next, locate your old coil gry connector, it has two wires on it, heavy pnk and wht. Heavy pnk is the IGN source for the new dist and wht is tach output

Thats all

Do yourself a favor and do not cut the connectors off or do any blind trimming. Just Tee into the wires and solder the connections

 

can i run the factory fuel pump to a carb and just regulate it to 7psi past the carb

 

Hi I just changed a 6.0 to carb but on a 2006 gmc with EFI and computer so I'm not sure what pressure the TBI fuel pump puts out. Mine was around 60-65 psi and could not find a regulator to go all the way down to 7 to 9 PSI. Now there might be and I didn't find it. I took my pump out of the tank and put a Holley Blue on. We replumped the tank like a fuel cell out the bottom.
I'm not sure what pressure your pump puts out. I'm sure thiers someone on here that will have a better idea. Good luck on your swap.

 

The fuel pressure on the TBI trucks was regulated to 9-13 or 14PSI or something like that, so finding a regulator to handle that sort of low pressure is not any different than finding one for any other carbureted vehicle with a typical aftermarket electric pump.

 

thanks

 

I did this very swap on a 95 5 speed. I left the computer hooked up to run the gauges. Just had a service engine light on all the time.

I put a stock TBI 350 back in it and sold it. I think it was a Mallory fuel regulator I used that would knock the pressure down enough. I'll sell it, PM me if your interested.

 

i'll keep you in mind for the part. thanks to all for input.