Finally took the plunge - New 427SC kit on order!

[sambo]

I love the idea of more cubes and a blower but how do you unleash the full 740Nm in a short wheelbase car weighing 1000kg? Does the ECU limit torque in the first few gears? Assuming street rubber here too.

[Paintwerks]

Originally Posted by sambo

I love the idea of more cubes and a blower but how do you unleash the full 740Nm in a short wheelbase car weighing 1000kg? Does the ECU limit torque in the first few gears? Assuming street rubber here too.

Sambo....mate, I have wondered about this myself. I don't have an answer for you...guess I'll find out! T.L. says that his Cobra makes 417kw atw so perhaps he can chime in about the general drive-ability.

Modena, not sure what you paid for yours, but the cheapest new LS3 I have found is $7450 but that is from an Ebay seller I am unfamiliar with. I can get one from Holmart for $7900 but I still need to buy a Corvette sump. So I costed the LS3 at $8500 ready to bolt in, plus I have a brand new WS427 flywheel and clutch I can sell and recoup funds on as the LSA came already fitted with a flywheel and twin plate clutch.

I didn't need to tell my wife anything about the motor. While she is of the mindset the Cobra money could be better spent elsewhere, she's fine with me building it and hasn't asked any questions.

Dimis...thanks! I look forward to meeting you in future.

[Dimis]

Originally Posted by Paintwerks

Sambo....mate, I have wondered about this myself. I don't have an answer for you...guess I'll find out! T.L. says that his Cobra makes 417kw atw so perhaps he can chime in about the general drive-ability.

It has more to do with the power curve than the peak numbers.

Assuming all else is equal - If those numbers are down low in the rev range, then your cooking those tires with every twitch of your toe.

If however those numbers are higher in the rev range then you'll get away with it if you drive softly in the lower rpm range.

ECU management of power delivery can help here.
Mind you this is easily said in theory and something else to achieve in practice.

Thems my humble thoughts.

[Paintwerks]

Originally Posted by Dimis

It has more to do with the power curve than the peak numbers.

Assuming all else is equal - If those numbers are down low in the rev range, then your cooking those tires with every twitch of the toe you make.

If however those numbers are higher in the rev range then you'll get away with it if you drive softly in the lower rpm range.

ECU management if power delivery can help here.
Mind you this is easily said in theory and something else to achieve in practice.

Thems my humble thoughts.

Dimis,

I found this which gives you an idea about the power and torque:



Mike...the LS3 in my HSV R8 redlines at 6600rpm. It revs out nicely...especially after the tune it had. The LSA also has a 6600rpm rev limit.