383 Dyno Numbers See Inside
Registered User
Joined: Jul 1999
Posts: 3,647
From: Winnipeg, Manitoba, Canada
378rwhp@6200rpm 383lb ft torque
Thats with a 700R4 and a 3200 stall converter (3% more drivetrain loss)
The dyno guys said with a T56 it would have been over 400rwhp.
I wouldn't worry too much about your dyno numbers if your MAP was unplugged. You should be easily over 350rwhp with proper tuning.
Thats with a 700R4 and a 3200 stall converter (3% more drivetrain loss)
The dyno guys said with a T56 it would have been over 400rwhp.
I wouldn't worry too much about your dyno numbers if your MAP was unplugged. You should be easily over 350rwhp with proper tuning.
Last edited by Gripenfelter; Aug 13, 2003 at 09:29 AM.
Thread Starter
Registered User
Joined: Apr 2001
Posts: 284
From: Tampa, FL USA
Thanks Fred I was looking for some input on the MAP sensor. I seemed to think that the car was running in open loop, and using some default timing maps to run on. Anyway I will try to get her on the dyno again, before to much longer. My original goal is to run 11's NA I think that is doable without new heads. there seems to be guys running stock heads (that have been worked) putting down 400+ rwhp. lets see what tuning will do.
Mike
Mike
Registered User
Joined: Dec 2001
Posts: 180
From: Texas
Originally posted by SnkEatr
Thanks Fred I was looking for some input on the MAP sensor. I seemed to think that the car was running in open loop, and using some default timing maps to run on. Anyway I will try to get her on the dyno again, before to much longer. My original goal is to run 11's NA I think that is doable without new heads. there seems to be guys running stock heads (that have been worked) putting down 400+ rwhp. lets see what tuning will do.
Mike
Thanks Fred I was looking for some input on the MAP sensor. I seemed to think that the car was running in open loop, and using some default timing maps to run on. Anyway I will try to get her on the dyno again, before to much longer. My original goal is to run 11's NA I think that is doable without new heads. there seems to be guys running stock heads (that have been worked) putting down 400+ rwhp. lets see what tuning will do.
Mike
Please post the numbers when you get the MAP issues taken care of.
Registered User
Joined: Dec 2001
Posts: 180
From: Texas
Originally posted by 1slowlt1
i have to agree with everyone else.
i have a 97 z with a 355 forged interals 210/224 cam and stock heads that are ported and polished and i put down 403RWHP and 378RWTQ with stock exhaust manifolds. that was with a very safe tune.
i think there is alot of room for improvement.
i have to agree with everyone else.
i have a 97 z with a 355 forged interals 210/224 cam and stock heads that are ported and polished and i put down 403RWHP and 378RWTQ with stock exhaust manifolds. that was with a very safe tune.
i think there is alot of room for improvement.
Who did the heads?
Thread Starter
Registered User
Joined: Apr 2001
Posts: 284
From: Tampa, FL USA
Originally posted by Rpm280
Please post the numbers when you get the MAP issues taken care of.
Please post the numbers when you get the MAP issues taken care of.
Registered User
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
Originally posted by Fastbird93
I wish!!! I'm paying $200 per 3 pulls with wide band, and that's the cheapest around!!!
I wish!!! I'm paying $200 per 3 pulls with wide band, and that's the cheapest around!!!
Registered User
Joined: Mar 2002
Posts: 4,827
From: Waynesboro, PA
I don't know why it's so dang expensive around here. Cheapest one I know of is SLP at $175 for three pulls.
It sucks, especially when you're trying to get a speed density car dialed in with mail in tunes.
It sucks, especially when you're trying to get a speed density car dialed in with mail in tunes.
Registered User
Joined: Aug 2003
Posts: 6
my engine was built by More Performance out of Charlotte, NC. here are the specs on the engine:
- 355 CID
- stock LT1 heads that are ported and polished with 1.6 RR, double springs, titanium pushrods and titanium retainers
- custom gound cam 210/224 with a 510/550 lift and a 112 LSA
- 52mm TB
- steel crank, lunati race rods, 4.03/3.48/5.7/-5 flat top pistons, all fed mog coated bearings
- comp. ratio is 10.8:1
i also have all the usual bolts on's with a loudmouth and cats with stock manifolds
i have been really impressed with the motor.
rob
- 355 CID
- stock LT1 heads that are ported and polished with 1.6 RR, double springs, titanium pushrods and titanium retainers
- custom gound cam 210/224 with a 510/550 lift and a 112 LSA
- 52mm TB
- steel crank, lunati race rods, 4.03/3.48/5.7/-5 flat top pistons, all fed mog coated bearings
- comp. ratio is 10.8:1
i also have all the usual bolts on's with a loudmouth and cats with stock manifolds
i have been really impressed with the motor.
rob
Registered User
Joined: Feb 2003
Posts: 1,661
From: Frisco TEXAS
I still call Bs
to 1slowlt1.
Let me get this straight your call name on here is 1slowlt1, but yet you have possibly the highest dyno i have ever seen on here with a very small cam and stock manifolds. Sorry, but without a dyno sheet and verification of mods, BS. unless your car was built on a day when EVERY GM plant employee recieved an extra week vacation and a 10000 bonus.
As to the 383 with cc306, get that bad boy tuned and eventually some GOOD heads and the sky is the limit.
to 1slowlt1.Let me get this straight your call name on here is 1slowlt1, but yet you have possibly the highest dyno i have ever seen on here with a very small cam and stock manifolds. Sorry, but without a dyno sheet and verification of mods, BS. unless your car was built on a day when EVERY GM plant employee recieved an extra week vacation and a 10000 bonus.
As to the 383 with cc306, get that bad boy tuned and eventually some GOOD heads and the sky is the limit.
Thread Starter
Registered User
Joined: Apr 2001
Posts: 284
From: Tampa, FL USA
Originally posted by texasTA
I still call Bs to 1slowlt1.
I still call Bs
to 1slowlt1.
