desk top dyno
01-10-2005, 11:28 AM
#1
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desk top dyno
i would like to see the curve on hp and torque of these two cams.
crane 168731
val. lift int 587 ex 610
adv dur 288/298 @ .050 226/236
lc 112
isky 696275/284 grind#rr275/284
val. lift int 553 ex 578
adv dur 275/284 @ .050 228/238
lc 112
motor is a zz502 9.6:1 comp alum head oval 110 cc
air gap intake edelbrock dual plane
holley carb 4150/4781-5 850 cfm
hei ignition (gm) (deg adv ?)
exh lightning header
I enderstand it wil be only bal park result thank you.
crane 168731
val. lift int 587 ex 610
adv dur 288/298 @ .050 226/236
lc 112
isky 696275/284 grind#rr275/284
val. lift int 553 ex 578
adv dur 275/284 @ .050 228/238
lc 112
motor is a zz502 9.6:1 comp alum head oval 110 cc
air gap intake edelbrock dual plane
holley carb 4150/4781-5 850 cfm
hei ignition (gm) (deg adv ?)
exh lightning header
I enderstand it wil be only bal park result thank you.
01-10-2005, 12:56 PM
#5
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Re: desk top dyno
My desk top dyno was real close to my actual dyno #'s. However, you need real good data to get accurate results from the program. You really need the flow #'s.
01-10-2005, 09:40 PM
#7
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Re: desk top dyno
Sorry it's taken me this long to get back with you but I just got home.
Please list the cam card info if you have it. DD requires the input of the cam timing events. Thanks.
Please list the cam card info if you have it. DD requires the input of the cam timing events. Thanks.
01-11-2005, 07:00 AM
#9
MarineKinetics
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Re: desk top dyno
Awesomerott,
Here are the head flow #'s for the GM aluminum oval heads. The far right # are exhaust w/pipe
0.2 138 119 86% 122
0.3 193 145 75% 156
0.4 233 168 72% 178
0.5 272 189 69% 194
0.6 299 202 68% 207
0.7 318 210 66% 213
Here are the head flow #'s for the GM aluminum oval heads. The far right # are exhaust w/pipe
0.2 138 119 86% 122
0.3 193 145 75% 156
0.4 233 168 72% 178
0.5 272 189 69% 194
0.6 299 202 68% 207
0.7 318 210 66% 213
01-11-2005, 07:03 AM
#10
MarineKinetics
Platinum Member
Re: desk top dyno
Cam timing @ .004 for Crane 168731. I believe DD2000 asks for timing @ .006
Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 33.0 BTDC 75.0 ABDC 288 °
Exhaust 82.0 BBDC 36.0 ATDC 298 °
Bob
Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 33.0 BTDC 75.0 ABDC 288 °
Exhaust 82.0 BBDC 36.0 ATDC 298 °
Bob
