Tuning a crate 350 H.O.

[EagleMark]

Well it's not tuned for your motor? It is tuned to a stock motor, hyway lean cruise enabled, ESC knock test done, PE increased, then that one had TCC turned off... we have a ton of other bins including that one stock in the 1227747 ECM information thread.

[rokcrawlin85]

isn't the suburban a stock hypertec chip or something like that? so it'll have a little more fuel and timing done i would assume... maybe i read that wrong. either way, i realize it's gonna take tuning to get stuff to work for my setup, just takes some time. i'll start with a stock base of a truck from late 80's early 90's era, and go from there. i'll start with one off this site that'll be a 5.7 700R4 truck bin for the 7747 ECM that way we can compare my changes, as i go, to a stock setup. Sound good?

[EagleMark]

Yup!

Comparing a Hypertech Stage 1 chip to stock there are only a couple minor differences. They should be arrested for any claims of improvement.

[gregs78cam]

Yea, I read one from a buddy's truck, and a couple of the changes made no sense to me.

[rokcrawlin85]

wow...i'll pass the word on to anyone looking into their chips then, scammers!! I'll just start with a fresh bin and go from there

[EagleMark]

Yea, I read one from a buddy's truck, and a couple of the changes made no sense to me.

You can read years ago when hacking chips was in it's infancy an aftermarket chip maker sold a chip that increased fuel, and it did, they tested it and proved it. But they raised coolant temp so motor was always in choke...

[woody80z28]

I've looked all over the internet trying to find a good base vortec timing table for a tbi. I have read that a vortec tbi was offered from the factory in mexico but have yet to see a bin for it. There also seems to be a lot of debate at different forums on what vortec heads call for in reguards to timing in a tbi application. really comes down to cam, compression, fuel, ect. I can tell you when I put vortec heads on my 4.3 the stock tables were useless and it was a gutless wonder. I copied the timing table out of a efi live tune file and still had to bump it up across the board before the engine would come alive.

My stock timing table was terrible with the Vortecs too. I got a B-body LT1 table from TGO that helped a lot, but the best was from an LT1/6spd F-body. I took a few degrees out at high load (my truck is heavy) and left the rest of it about the same and it is great.

[PJG1173]

would you mind posting up a screen shot of your timing map? I've been looking at the stock 4.3 CPI table and it looks similar to my modified vortec table. I might give that one a shot.

[rokcrawlin85]

would you mind posting up a screen shot of your timing map? I've been looking at the stock 4.3 CPI table and it looks similar to my modified vortec table. I might give that one a shot.

x2 ^^ that timing table would be nice to take a look at and compare

[woody80z28]

When I get back to my home PC I'll post it up.

[EagleMark]

You guys could just go get the bin and open it. Auto and Manual are there...
http://www.gearhead-efi.com/Fuel-Inj...rmation-EE-EEB

[rokcrawlin85]

You guys could just go get the bin and open it. Auto and Manual are there...
http://www.gearhead-efi.com/Fuel-Inj...rmation-EE-EEB

Thanks mark, i just didn't know what ECM # was run in those LT1 setups to go find a staock bin... now i do

[EagleMark]

Prescott valley! I have a freind who lives in Cordes Junction, I love going to visit in the winter!

[rokcrawlin85]

I love this area up here!! Not too cold and not too hot. Could use some more green tho. But we got the woods to go wheel in less than 15 minutes away

[EagleMark]

Sedona, Montazumas castle, route 89 through Oak Creek canyon... and I missed my trip down there this winter... cold and broke...