Rolling road dyno

[Spid]

Had my car on the dyno yesterday has a modifed LS7. What do you think? Is this about right

Edited by Spid on Thursday 5th May 13:21

[spatz]

600hp at the wheels you must be kidding, is your box still alive ?
Congrats !

[Storer]

I think it says flywheel horsepower/torque on the scales but it's still a good figure if it is only lightly tuned.

Paul

[Spid]

Flywheel bhp is a Mast Motorsport engine

[Spid]

If you compare it to the dyno for this engine on their website I'm down 50 bhp but up on torque. Also their dyno shows the engine making max power 1000 rpm higher. Is great to drive goes like stink, is a little lumpy under 2000 rpm in town

[spatz]

I had similar problems with my stock internal engine and had to increase fueling around idle for drives in town, no problems since. A lambda between 0,9 and 0,95 solved my cangarrooing problems

[Storer]

Spid said:

If you compare it to the dyno for this engine on their website I'm down 50 bhp but up on torque. Also their dyno shows the engine making max power 1000 rpm higher. Is great to drive goes like stink, is a little lumpy under 2000 rpm in town

Your lower rpm max power and reduced bhp suggest to me that your engine's breathing is not being maximised. What headers and exhaust are you using and have you fitted an air filter that has sufficient airflow?

Paul

[chuntington101]

Spid said:

Flywheel bhp is a Mast Motorsport engine

has it got stock LS7 heads on or they massive monster heads?

[Spid]

chuntington101 said:

has it got stock LS7 heads on or they massive monster heads?

Spec here
http://www.mastmotorsports.com/2010/product-view.p... Rod Muscle Car Handbuilt N/A&id=79

[Spid]

Storer said:

Your lower rpm max power and reduced bhp suggest to me that your engine's breathing is not being maximised. What headers and exhaust are you using and have you fitted an air filter that has sufficient airflow?

Paul

Has 2" headers into 3" exhaust, but has a big silencer as had SVA troubles

[Paul.B]

You must be please with that result Adam? We'll bring those mufflers down next time and see what it pulls then

[Spid]

Paul.B said:

You must be please with that result Adam? We'll bring those mufflers down next time and see what it pulls then

Don't recon it will rev over 3000rpm ! Or if would shoot them off