dynoed the 383 UPDATED track results 4/16
03-20-2011, 12:53 PM
#1
dynoed the 383 UPDATED track results 4/16 had the car tuned and figured i'd post up the numbers.
383 ls1
prc 5.3 heads
pat g cam .623/.623 243/251
fast 90/92
kooks 1 7/8"-2" headers w/ true duals
speed density tuned
through a th400 w/ yank 4500 stall, 12 bolt, and slicks
tuned by Slowhawk Performance
427/374
had some valve float up top but that should be fixed now
383 ls1
prc 5.3 heads
pat g cam .623/.623 243/251
fast 90/92
kooks 1 7/8"-2" headers w/ true duals
speed density tuned
through a th400 w/ yank 4500 stall, 12 bolt, and slicks
tuned by Slowhawk Performance
427/374
had some valve float up top but that should be fixed now
Last edited by ls1curt; 04-16-2011 at 03:44 PM.
03-20-2011, 07:20 PM
#8
That torque converter sure was messing up the dyno. The torque was still climbing after 5250 among other things. Also with a Mustang dyno the numbers will be lower. So with a combination of a high stall torque converter and a Mustang dyno the numbers are not bad at all.
03-21-2011, 01:20 AM
#10
bad ***... update as soon as you get some track numbers....whats your c/r...if you dont mind me asking..im building a 383 rite now with specs close to yours all the way around...
03-21-2011, 08:09 AM
#12
On The Tree
that car is gona fly at the track..im using those same heads and a pat g 236/243 621/624 111 cam on a 6.2 lower end but with a m6 and a 12 bolt with 4.11s and made 474 on dons dyno..those 400s eat up dyno numbers. nice build man
Dyno numbers be damned! 
03-22-2011, 08:06 PM
#15
I dyno 442/430 in the mustang dyno the heads i have dont flow more then .268 at .600" lift i did the porting!! And just smooth the runners i think you need better heads im saving for some prc227 and will be in the 490 mark
Last edited by 09camaro383; 05-26-2011 at 10:25 PM.
