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.

Re: desk top dyno
 

I'll run it for you this afternoon when I get home from work.

Re: desk top dyno
 

apreciated,i'll check result sometime tonight.

Re: desk top dyno
 

How acurate is a desk top dyno ?

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.

Re: desk top dyno
 

I just saw the software for 49 dollars. Does this sound correct ? If so its worth it .

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.

Re: desk top dyno
 

I'm sorry i don't have the cam timming card.
wonder if anyone does ?
I'll do some researche and see what i can find,sorry about this!

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

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