Have u tried a different gap on your sparkplugs? That seems like u pulled a ton of timing out to keep it down.
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07-09-2016
Have u tried a different gap on your sparkplugs? That seems like u pulled a ton of timing out to keep it down.
07-09-2016
I'd hate to have to jump back up a pulley size because I couldn't get the tune right with a smaller pulley, but I guess that's where the tuner pros gonna come in for me as this I gonna be my first 3800 build
07-09-2016
Bigger pulley doesn't always equate to more HP... Smaller pulley no knock ++timing = ++HP
: )
07-09-2016
lets just say, your not running a smaller pulley with out more flow mods, or a ic, or e85.
i got ported heads, 1.95 rockers, a fsic ported lim, and 42 lb injectors. it wont take much timing at 10 psi. but at 7 psi it will take 18 degrees wot.
your best to buy a tuner, canned tunes dont always work so well for a top swap. they need tweaking to get right, then you can play the boost vs timing game. no tuner,,,,you'll never know what its capable of.
07-09-2016
I gotta buddy of mine who does it for a living who's going to tune my car as I modify it. Right now he's tuning a g8 so I'm pretty anxious to see what that and my car is capable of
07-09-2016
before the ic, i had a 3.4 on there, it was getting 6ยบ kr at part throttle with stock l67 timing. so i put the stock pulley on and then ran one degree less wot timing and it had no kr at that point.
07-09-2016
But your losing engine performance by having to go back to that stock pulley tho right?
07-09-2016
Still more compression then a l67.
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
07-09-2016
with an N/A bottom end, an otherwise stock L67 or L32 will make ~5 more HP than a bone stock s/c engine, but KR is a much bigger issue and a top/bottom swap needs to have flow mods in order to be safe.
07-09-2016
I forgot he's got a L36 bottom end
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