CHRISPY

I am running about 24 degrees WOT timing on pump gas. 11.8:1 comp and 236/240 110LSA cam.

462RWHP@6000rpm 12.3:1 AF

What are you guys running for timing on pump fuel? If you could share your compression ratio, fuel type, timing and WOT AF that would be awesome

horist

my tune has me running 27* past 6000, 26 5600-6000 , 25 5200-5600 , 23 4800-5200, then 24* before that (not that I spend much time that low)

382 stroker, 11.3:1 compression, 232/240 112 593/603 cam... pump gas, WOT should be 12.8:1 I believe... was dyno tuned by speed inc ... i haven't finished hooking up my wideband yet so hard to say exact

CHRISPY

Thanks for the detailed info

What were your corrected dyno numbers?

From your post it looks like you go from 24 degrees up to 4700rpm and then down to 23 degrees from 4800-5200rpm?

horist

corrected was 422/418 or something like that (i'll have to dig up the dyno) ... should be higher now (my transmission was slipping at the time... now the trans is fixed but my converter is slipping way too much... so putting new converter in this weekend then will redyno)
This was through my A4 and a 12 bolt, 3.73 gears, stock rear wheels

silent1

iTrader: (3)

Timing-23*
A/F-12.3
CR-11.3:1
Fuel-93 oct
Cam-244/244 612/612 112
4.030 bore-4.125 stroke
S3 6.0 heads 2.080 int 1.60 ex
422 iron block
Truck intake

CHRISPY

Silent what were your peak numbers? RWHP and RWTQ?

Thanks for the information

silent1

iTrader: (3)

I think peak HP was at 5500 RPM's and peak TQ was at about 4500 RPM's. My numbers were pretty low but my times were decent. Excuses-I have a lot of drivetrain loss. 400 RWHP and 450 RWTQ. After 5700 RPM's, the intake starts to choke the motor and power starts coming down. This is what I had on when dynoed:
'01 GMC Sierra 4x4 ext. cab (long drive shaft)
FLP 4L65E w/ 4WD T-Case
Yank TT3000
4.10 w/ Eaton posi
33" Off Road Tires

I weigh in at 5400 lbs and run 13.0 at 103@ w/ 1.78 60ft

WS6HUMMER

iTrader: (19)

I have a 1st gen stroker in my 79 vette and was wondering why stroker's usually run a little less cam and make their power at a little lower rpm's. I know it's the stroke that does it but don't understand exactly why? My peak HP is @ 6200 and peak torque is @ 5200

79 Black C3, Speed-o-motive built 383,Dart pro 1 215cc heads, Classic Holley750 DP,Victor Jr intake,Comp 540/562 hyd roller cam,1.6 Comp RR's,Dart stud girdles, 4340 Eagle crank & 6" rods,forged Probe pistons,11.0.1 CR,Hooker ceramic LT's,3.55 Unitrax corvette diff with Muskegon HD cover,B&M TH350,TCI 10.5 3500 stall,Bilstein shocks,VBP hymes camber rods,VBP O-ringed calipers,all bushings energy susp polyurethane, 515 fwhp & 480 fwtq