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  1. R

    94 GMC K1500. Planned 5.3 swap.

    First, sorry if this has been covered, I did try to search. Was planning on 5.3 swapping it a couple years ago but after driving my daughters 5.3 silverado which is optioned nearly identicle to my 94 I really wasnt as impressed as I thought I would be but my 94s 5.7 flexplate recently cracked so...
  2. R

    Mild 400 TBI in a 94 GMC K1500.

    Looks like everyone has different results. Guess I will just need to try it to find out.
  3. R

    Mild 400 TBI in a 94 GMC K1500.

    Erik, honestly before I wasted my time porting TBI heads I would just get some vortecs or small port aluminum heads but like I said this would be a pure torque/towing engine that I hope gets good MPG. Unmodified tbi heads fit my needs very good I think. I don't care if this engine makes power...
  4. R

    Mild 400 TBI in a 94 GMC K1500.

    b454rat Timing tables shouldn't be that far off. An old school 350 distributer will work in a 454 just fine with no changes. Maybe a little bit of difference on fuel tables but really how much for an engine that won't make much more HP then the stock TBI 350. Drivabilty is my biggest concern
  5. R

    Mild 400 TBI in a 94 GMC K1500.

    B454rat, thats the kind of info I am looking for. Considering I will be useing a TBI cam and heads I really think I can get away with the factory prom. I am thinking maybe a slight increase in fuel pressure is all I will really need to keep everything happy. Just not sure what to do. Hopefully...
  6. R

    Mild 400 TBI in a 94 GMC K1500.

    Still might do a 5.3 swap, I also have everything I need in my storage shed for that but like I said, the 2000 I have been driving around this week really didn't impress me, my 2 goals for the 5.3 swap where better MPG and more torque, the 5.3 doesn't seem to deliver either one so.......... I...
  7. R

    Mild 400 TBI in a 94 GMC K1500.

    Well I was planning on doing a 5.3 swap in it but after driving a 2000 silverado the past week not sure I see many benefits for the cost involved. I have a rebuildable 400 in my storage so am starting to think it would be the way to go. It will be a very mild build and probably use the TBI...

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