zdkdeeier493

This link was pulled from German Car Fans. Looks like they're pretty solid on their figures. Maybe the E will get a little bump in power over the R. I'm not sure if anyone has seen this yet or not, but it seems like everyone still isn't sure about the exact details on the engine.
Heres the link: GERMANCARFANS

That link talks about the R 63. This link talks specifically about the engine.

AMG 6.3-litre V8-engine guarantees dynamic performance

With an output of 375 kW/510 hp and 630 Newton metres of torque, this large, newly developed, naturally-aspirated AMG eight-cylinder unit ensures effortless, dynamic progress. The R 63 AMG with the short wheelbase accelerates from standstill to 100 km/h in 5.0 seconds (R 63 AMG with long wheelbase: 5.1 seconds) and has a maximum speed of 250 km/h (electronically limited). Power is transferred by the AMG SPEEDSHIFT 7G-TRONIC transmission with steering wheel gearshift buttons, a DIRECT SELECT shift lever and three driving modes.

A combination of four-wheel drive with a 40:60 percent torque distribution to the front and rear axles, plus an AMG sports suspension with AIRMATIC air suspension, level control and the Adaptive Damping System, ensures outstanding handling safety and a dynamic or comfort-oriented style of driving – at the touch of a button, depending on the driver’s wishes. Extremely short braking distances are guaranteed by the large AMG high-performance braking system.

I don't know if its because of the gearing or the 4-wheel drive but the acceleration time seems pretty high given the amount of power the engine has. Anyone feel the same way?

Kev04C320

If you convert the max torque to British units, it would be about 465lb-ft, which is not bad at all, only 30 less than the supercharged 55s. However, we don't know exactly how flat the torque curve is unless some one posts a dynograph of the engine. My speculation is that the max torque is coming out in the top end, which is not the best way for acceleration.

Jakpro1

Starting to feel a little better about the 6.3. Found this tiny dyno on Edmunds....plus the commentary from Edmunds.

Although this dyno chart is in Nm and kW instead of lb-ft and hp, you can see the engine's power curves clearly. By 2,000 rpm the V8 is already making 362 lb-ft of torque, which climbs to 405 lb-ft by 3,000 rpm. It might not be as much as the supercharged 5.5-liter engine produces, but it's plenty.

Kev04C320

If the 63 V8 sounds great, I might jump into one, just for the sake of it. Imagine a 63 engine with a KLEEMANN blower.......

ClayJ

Yee Haw!

IanSL55

Someone posted regarding that and the concensus was it can't be done... though MB is working on two turbo versions of the 6.3 that many think may find their way into the S, SL, and CL.

~ Ian

Evolution Marine

Kev04C320 - 30 lb. ft.! UH, try more like 50 lb. ft. less than the 55K Motor. (which has 516 lb. ft. not 495 lb.ft.).

After market Motor Mods. - forget Blowers, the Motor Mods. will be limited to ECU programing (timing, fuel, & Rev. Limit), Headers, Exhaust, and Cams. Motor has way to much compression and would need new pistons, and besides just wait for MB to finish the Turbo Version of the 6.3 Motor. Oh, you could also put some shorter gears in it, however, all these Mods. start making the Motor and Car more BUZZZZZY and not so Mercedes like.

The Turbo Version of the 6.3 Motor will be much more tunable, lower RPMs (more Mercedes like) and have all the correct internal parts (heavy duty pistons, rods, and crankshaft) to handle all the added stress developed by the aftermarket mods. The Turbo Version will also have more cooling capacity, stronger transmission, and LSD. Of course this will come at a $ 50,000.00 premium, but who cares, we are talking about a ride from HELL here!!!

I wouldn't be a bit surprized here if a Kleeman K1 version of the Turbo 6.3 developed 650 HP & 700+ lb. ft. of Torque!!! - Bob