Well its been over a year now since the 5.3 took a dump on me but the 408 is in and ready for tune. Went all forged, Afr heads, with this cam
INTAKE EXHAUST
DURATION @ .050" 23* 24*
ADVERTISED DURATION 28* 29*
LOBE LIFT 0.38* 0.35*
GROSS VALVE LIFT 0.649 0.609
LOBE SEPARATION 111
ADVANCE GROUND IN 1
OPEN CLOSE
VALVE TIMING @ .050"
INTAKE 8 BTDC 51 ABDC
EXHAUST 52 BBDC 10 ATDC
hopen good #s ill keep posted on this for ya
well its at 464 but its not geting enough air up top. so im guessing the cold air i got for the 5.3 isnt big enough along with the stock mass air... Its also throwing a code at 6200 and i cant fig out why any help on this. i cant remeber code off topof my head ill get it tomarrow
are you running the stock 5.3 MAF? that might be the problem. need to go bigger!
so a MS4 in a 408?
im betting torque is around 415-422
your numbers are about right for that combo,enjoy your combo
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
I would think a bigger cam would be in order for those cubes.
2012 Ford F-150 Ecoboost Super Crew 4x4, stock and staying that way.
2001 chevy green = LS1 stock, 3k stall, 373 posi, tuned by LSX Power in CS TX
Yes you are correct. The tq was 424, but still can't understand why its throwing a code one time at 6200 then the next time its not. And yes its still the 5.3 maf who makes a bigger one? Im not getting enough air threw it for the top endOriginally Posted by Quik
all the mafs are the same for the gmt800 trucks. if maf size is restriction time to go SD
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
IIRC, Flaco does tons of MAF tunes on turbo trucks using a card type sensor. Mine is done SD but thats just how my tuner prefers to handle the tune.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
dont forget that no matter what maf you have on a GMT800 truck the PCM is hard data at a set value. nothing is gained past that point then you use a half breed tune of maf/sd
on the GMT900 trucks its totally different
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
Can you explain the differences and how it works? I understand that the OS on the GMT900 is 3bar capable from what I've read. I also hear the MAF is good to much higher levels than the GMT800 one. In your opinion, what would be the best way to tune a NNBS turbo truck? I know Greg is full on SD, but I've read about a lot of the Vette and Camaro guys using the MAF.
1969 Chevy RCLB C10 350/TH400 SOLD
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2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
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