How many of you are running carbs vs fuel injection on your V8s?

[Blzngun]

I would bet money that your going to have a much easier time with a carb. without being knowledgible about automotive electrical, timing, and setup. Your going to have a tough time. Biggest mistake you can make is getting to big a carb for your motor. If it a basic 350 cam intake headers stay small.and jet it up.

[6SpeedBlazer]

efi realy isnt that hard, if you run one of the holey ecus, they set base maps and then you tune them witha laptop you your specific specs

[LayinBodyBlazer]

Originally posted by tippmann243
get a truck that is oroginaly a 4.3 tbi motor and swap to a 350 tbi motor, mine is getting kinda hard to start but 215,000 miles is mostly the culprit

when swapping a 4.3 tbi to 350 tbi all you ahve to do is rechip the ecu put 350 injectors in the TB and change the electronic spark contorller (i think thats it)

everything else is jsut like a stock v8 swap

well my 1996 S10 blazer is the VIN "W" version if that tells u anything about what kind of injection it is.

you say "when swapping a 4.3 tbi to 350 tbi all you ahve to do is rechip the ecu put 350 injectors in the TB" wouldn't a 350 TBI motor have 350 injectors in it???

I don't know alot about engines but Im willing to learn if I can find the right resources.

Blzngun- "If it a basic 350 cam intake headers stay small.and jet it up."

What do you mean by "jet it up?" My motor that I want to do the swap with isnt going to be any huge build...just like you said, a basic 350 with cam, intake and headers.


If any of you can direct me to some web pages that can school me on alot of this stuff, have at it :D

[6SpeedBlazer]

well i was going to buy a crate engine and ruse my stock tb if you get a complete 350 then you wont have to swap injectoirs

since your working witha 96 it will be a tad bit harder

[LayinBodyBlazer]

why will it be harder?

[s10blaza]

stock TBI on mine right now. It sucks.

I hope to run a TPI setup with an LT1 manifold modified to fit Vortec heads as soon as the suspension and body are done on mine.

[LayinBodyBlazer]

Why does it suck? I would imagine that anything over the stock V6 is a drastic improvement.

[sterling]

TBI 5.7L

Still gettiing things worked out.

[s10blaza]

Originally posted by SoLoudItHtz
Why does it suck? I would imagine that anything over the stock V6 is a drastic improvement.

I meant TBI sucks. Having a 350 sure as hell doesn't :bigthumb:

[lycan]

Originally posted by s10blaza
I meant TBI sucks. Having a 350 sure as hell doesn't :bigthumb:

You're probably talking looks and power over functionality, yes?

[s10blaza]

Originally posted by lycan
You're probably talking looks and power over functionality, yes?

Yeah, functionality isn't great due to the fact that I didn't even bother tuning it. It still has the 4.3 computer. My plans were always doing a TPI setup and the TBI was just to get it running. Even then its still impressive though.

[Superbee]

man you just need to spend $30 on a 5.7 comp even if it is temporary. its night and day. mine didnt run for shit with the 4.3 comp.

[s10blaza]

Originally posted by Superbee
man you just need to spend $30 on a 5.7 comp even if it is temporary. its night and day. mine didnt run for shit with the 4.3 comp.

I just WISH a 5.7 computer was $30 here. The cheapest I found was $80 with no warranty at the yards down here. Not willing to spend that on a temporary setup. Besides, its too late, my truck is all torn apart again :p:

[boominrick]

do the 350's with tbi's run good?

i have a 91 4.3 and i wanted to put a 350 with a decent cam and headers but i wanted to have decent gas milage and reliablility. oh ya and power.

you they suck that bad? if you do it right

[LayinBodyBlazer]

I think since my truck won't be an everyday driver since Ill have my new Ram that Ill probably go carb rather than efi since Im a newbie to the V8 swapping