horse power and torque??
11-10-2003, 06:35 PM
#1
Guest
Posts: n/a
horse power and torque??
i have a 240z with a built head that is port and polished new cams rockers springs the works. I also have a 280zx block(stock) and headers 6-1. my carbs are after market SU's. i just want to know if anyone can give me an estamate on how much horses and torque i am running.
11-12-2003, 08:54 AM
#2
The Evil Twin
Join Date: Mar 2001
Location: Seattle, WA
Posts: 9,294
Crank HP: 180-200
Crank TQ: 200-220
RWHP: 150-170
RWTQ: 180-190
That will also depend on how well your carbs are tuned, what they are jetted for and the amount of porting done on the intake as well as your cam's lift and duration and the engine's compression ratio. Also, your wheel power and torque will be affected quite a bit by what your rear gear ratio is. A 3.9 will yeild more power on a dyno than a 3.54 rearend.
I saw an L28 on a dyno. Rebuilt head with performance cam, tripple Webers, headers. 151 RWHP. not as much as I expected. The carbs could probably be tuned better for peak hp. Maybe he had them running lean for better torque. You tend to see a lack of low rpm power with tripples. I have no idea what rearend he was using.
Crank TQ: 200-220
RWHP: 150-170
RWTQ: 180-190
That will also depend on how well your carbs are tuned, what they are jetted for and the amount of porting done on the intake as well as your cam's lift and duration and the engine's compression ratio. Also, your wheel power and torque will be affected quite a bit by what your rear gear ratio is. A 3.9 will yeild more power on a dyno than a 3.54 rearend.
I saw an L28 on a dyno. Rebuilt head with performance cam, tripple Webers, headers. 151 RWHP. not as much as I expected. The carbs could probably be tuned better for peak hp. Maybe he had them running lean for better torque. You tend to see a lack of low rpm power with tripples. I have no idea what rearend he was using.
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