1. Home
  2. Chevrolet Trucks
  3. Doc got a Q for ya

Doc got a Q for ya

Hey doc,

Will a ecm puter from a v-6 truck work on a v-8 engine if the chip is changed. People are telling me that I will have to put a puter from a v8 in when I go to put the tbi system on my sb400. I have found one puter from a v8 in a junk yard and they want 600 bucks for the damn thing. I am not sure how much they are new but I am really thinking of saving money and putting a carb on it now. I know it will take some fancy wire job to get everything changed over for the carb but after I buy bigger injectors and intake and all the happy little things I will need I will be in deep enough to where I can almost buy the multi-port injection system from edelbrock. It is getting also really tempting to just sell the truck and buy one with a v8 and drop the 400 in my jeep. I am already over 2 grand into the motor the wife is about to start cutting my budget on parts.

side

Reply to
sidewinder
Loading thread data ...

AFAIK, they're identical except for the chip and the calpak/mempak. Tell your friends they're wrong and buy the cheaper ECM.

Sam

Reply to
GaWd

I thought he was wrong. I already have the v6 one installed in the truck so that saves me a few pennies.

Reply to
sidewinder

Doc. Isnt there a BIG core charge on ECMs?? That might throw a wrench in your $ estimate? If so I would check every junk yard in town and use it for a core. Might even get lucky and find the right one. I bought an updated eprom for my Sonoma form the dealer and it was only $60.

Reply to
Scott M

Reply to
sidewinder

The CFM rating on a MPFI system is nothing to worry about; if you get the

1000 CFM system and run it on an engine that only needs 650 or so, it'll adjust the mixture accordingly based on sensor input. It's not like a carb that would have to be jetted down. The ECM will do all the work for ya.

Doc

Reply to
"Doc"

Ugh, yeah forgot about the core charge..........................which is around $100. $195 still beats the shit outta $600 for one from the wrecker.

Doc

Reply to
"Doc"

Yeah I am gonna probably just run a carb until I have enough pesos saved for the mpfi system. I have 2 edelbrocks and 3 holleys sitting on the shelf ranging from 450cfm to 750cfm so I should be able to find one that will work. I want the edelbrock mpfi so I am figuring it like this. If the wife thinks I am spending way too much money on gas she will let me get it to save on money. Thanks for all the help.

Reply to
sidewinder

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.