: Ordered new hp mods whatcha think??



Somefun
03-02-10, 09:32 PM
Guy's I just ordered the Hand Held programer from Wait4me along with their cold air intake and 9.5" lower pully.... What do you think I can get for HP out of this combo? If the car stock is 557HP do you think you'll gain another 40hp? I am looking to be like 600HP with no issues....Is that possable?:cookoo:

cbloveday
03-02-10, 11:03 PM
I think you will be @ 600 for sure. What did Jesse estimate? I'm thinking 610 or so BHP

Gary Wells
03-03-10, 05:20 AM
Guy's I just ordered the Hand Held programer from Wait4me along with their cold air intake and 9.5" lower pully.... What do you think I can get for HP out of this combo? If the car stock is 557HP do you think you'll gain another 40hp? I am looking to be like 600HP with no issues....Is that possable?:cookoo:
Auto or manual tranny?
Should hit 600 BHP easy, maybe 610 as Curtis stated above. Should make for a nice combo.

musclesbmf
03-03-10, 10:33 AM
crank horsepower you will get well over 600. I think 610 is still conservative. And since you are talking crank horsepower, transmissions don't matter.

Mark

Gary Wells
03-03-10, 11:20 AM
crank horsepower you will get well over 600. I think 610 is still conservative. And since you are talking crank horsepower, transmissions don't matter.

Mark
Yup, your right, tranny selection won't matter for crank HP. I am only curious because of the # of *autos* compared to the # of manual trannies manufactured / available in the 09's.

gnxs
03-03-10, 11:46 AM
Guy's I just ordered the Hand Held programer from Wait4me along with their cold air intake and 9.5" lower pully.... What do you think I can get for HP out of this combo? If the car stock is 557HP do you think you'll gain another 40hp? I am looking to be like 600HP with no issues....Is that possable?:cookoo:
I have the exact mods you mentioned on my car (installed by Jesse). My car is an auto and made the following power (see chart). NOTE: Disregard the A/F information as the dyno's WB sensor was screwed up at the time. I datalogged the car the following weekend with my WB and saw A/F's primarily in the 11.5 range.

With 15% drivetrain loss maybe I'm making ~610 at the crank. :noidea: The car has trapped 122.xx in the quarter with those mods.

http://home.comcast.net/%7Egnxs/Images/ctsv-dyno.jpg

Razorecko
03-03-10, 12:07 PM
^ ouch. Something isn't right

v4meinsandiego
03-03-10, 12:41 PM
I think 600hp is no problem at the crank. With more boost coming the way of a larger crank pulley and different idler pulley, the results should equate to more than 40 horsepower. I estimate closer to 60-75hp. I recently ordered the same setup from Jesse and hope to have it on my car soon. I also have Magnaflow cat back, airbox mod, and handheld tune from Jesee. I also purchased his heat exchanger and 160 stat to help with heat soak. I am told after one hard pull the benefits of the larger crank pulley are diminished considerably without dealing with the heat issue. For your sake you can always add it later if you feel this is true. I will advise once I have it installed.

musclesbmf
03-03-10, 02:32 PM
The auto tranny is eating up more than 15% loss. It's more like 18% - 20%. If 18%, 630 crank. If 20%, 647 crank. The reason I say it's that much is from the many stock auto dyno runs that are in the 440 - 450 rwhp range. (445rwhp / 556crank = 80% to the wheels or a 20% loss.)

JMO,
Mark

Fubar75207
03-03-10, 02:51 PM
The auto tranny is eating up more than 15% loss. It's more like 18% - 20%. If 18%, 630 crank. If 20%, 647 crank. The reason I say it's that much is from the many stock auto dyno runs that are in the 440 - 450 rwhp range. (445rwhp / 556crank = 80% to the wheels or a 20% loss.)

JMO,
Mark

Yep, I agree. The dyno graph above is very good for an auto. That V is running great, congrats

gnxs
03-03-10, 03:46 PM
^ ouch. Something isn't right
:confused:

The auto tranny is eating up more than 15% loss. It's more like 18% - 20%. If 18%, 630 crank. If 20%, 647 crank. The reason I say it's that much is from the many stock auto dyno runs that are in the 440 - 450 rwhp range. (445rwhp / 556crank = 80% to the wheels or a 20% loss.)

JMO,
Mark
I was using a conservative estimate. I agree...it's likely more.

Razorecko
03-03-10, 06:55 PM
Not only that but some people tend to forget that any modification will also be affected by the drivetrain. So that 100hp + pulley,tune setup will give you 60hp on
your auto but a full 100hp on your buddy's stick.

Htown09
03-03-10, 08:20 PM
If you had a 6MT I bet those mods would put you at 550rwhp on a dynojet SAE. Drivetrain loss is a factor with the Auto.

Gary Wells
03-03-10, 09:14 PM
I think that there is about a 6% difference in the drivetrain loss between an auto and a stick on these cars. Maybe about a 19% loss on the auto and about a 13% loss on a stick. Thats based upon these motors making 556 crank HP. That is much more of a difference than I would have expected. I would think that it's something similar on the C6's, maybe not quite that much.

Fubar75207
03-03-10, 10:20 PM
Not only that but some people tend to forget that any modification will also be affected by the drivetrain. So that 100hp + pulley,tune setup will give you 60hp on
your auto but a full 100hp on your buddy's stick.
Not true... 100bhp gain would result in 80rwhp on an auto and 87rwhp on a manual, theoretically. Most tuners do not use an engine dyno, they just measure rear wheel gain then estimate (usually over estimate) horsepower at the flywheel. It sounds better when you're talking to people who don't know much about the subject.


I think that there is about a 6% difference in the drivetrain loss between an auto and a stick on these cars. Maybe about a 19% loss on the auto and about a 13% loss on a stick. Thats based upon these motors making 556 crank HP. That is much more of a difference than I would have expected. I would think that it's something similar on the C6's, maybe not quite that much.

13% would be better than I expected on these cars. What type of gearbox are they using in the manual V?