Sneaky Silverado- Cam swap dyno numbers
#11
9 psi before with the 3.65" pulley, 9-10 now with a 3.25" pulley, cam and 4" exhaust. Haven't really played with the meth too much yet. AFR is 11.3 on pump 91. When road testing it i found an issue with 2nd gear so thats being looked at now. Basically at wide open throttle and the tires are spinning the gear disengages. It's not flaring but more like the solenoids putting in in neutral and it only happens between 35-4500 rpm in 2nd. All my dyno pulls are made in 4th gear on a mustang dyno, when the motor is around 90*f and make a pull on the dyno it will hover around the 505 mark but when hot it's back to back 486. Once I get the trans tune sorted out I'll start looking at the meth.
#18
On The Tree
Join Date: Jul 2010
Location: Colorado Springs, Colorado
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What accessory belt are you running, 6 rib or 8 rib? I can't tell watching the video but it looks like an 8 rib.Last week I put the 3.25" pulley on mine with a new, shorter, Gates 6 rib and I had to tighten the hell out of my mechanical belt tensioner to stop it from slipping.
#20
Even with this little hiccup i managed 1.96 60' 12.61@111.35
Last year I ran 12.4@ 110 with a 1.71 60'
6L80E Issue - YouTube
Last year I ran 12.4@ 110 with a 1.71 60'
6L80E Issue - YouTube