Sorry it was a long day when I posted, I do have vortec headsOriginally Posted by jim_in_dorris
Sorry it was a long day when I posted, I do have vortec heads
Then it will actually run fair. It will take a tune to wake up though. Not a lot of lift, but enough duration you may need to bump idle.
Square body stepsides forever!!!
Which would be better for cam break in stock tune or the tune Dave W. Posted for vortecs?
The timing tables is a very important parameter. I'm not sure which tune I posted you are referring to, if the posted tune has the stock Vortec timing table from a Vortec black box PCM it will work better than the stock TBI timing table.
Typically the stock Vortec timing table can be improved when tuning.
dave w
I have been searching for the post with the tune but cannot find it, I have it on a pc at home. It was one you said you tuned for just a head swap and removed egr, AIR and disable lean cruise so it could be used as a base tune.
This one maybe??? I've cut and paste known Vortec/LT1 spark tables into my tunes. Not perfect but gets you started.
http://www.gearhead-efi.com/Fuel-Inj...tec-shortblock
I believe that is the one, won't know for sure till I get home. Thank you for finding that.
It is this tune
hold throttle ope so it runs, working off memory here from snap on mtu2500
1475 rpm
MAP kpa 33
timing light showed 27* with ecm connected
Last edited by kacy; 12-28-2017 at 06:35 AM.
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