KC Pond 482-580hp. Does that sound right?

[RICK LAKE]

Undy Dave a agree with you on the rpm and stroker limit. We both think alike. The Lemans rods are heavier than the scat rods I got from Barry R. The eagle rods in my 452 motor where lighter. Again staying with the 6,000 rpm limit had no bottom end problems after 8 years of autocross and road racing. With e-bay and swap meets all over the US, it's easy to find Jag rearends, ( center assembly for 2-300.00 dollars. ) Get a couple of different ratios, like 3.31 and 3.07. IMO the 2.88 ratio is weakest gearset and would limit them to 450HP and torque. The others IMO are stronger. With the range of 5 and 6 speed trans now and the T-56 holding 850HP and torque, you can have your cake and eat it too. As far as the high reving 427's they need to make up for the no torque bottom ends. Are they faster at top end, yes but who will holdup longer?? The GT-40 lemans cars had limiter for 6,500 rpm. This is how they survived the 24 hours. It all comes down to the right parts for the right application. This is the nice thing about this forum we learn new things every day on maken our FE motors run better and with more power. Dave there are guys running over 7,500 rpms with a single carb, the carbs are either 950 or 1100 cfms and these are stroker 482 motors that are still pulling like freighttrains. Morris is one. Dave S, is another one but with a olberg setup, this is a different deal. It's OK Dave, we will keep fighting cityhall. Rick L.

[undy]

Yea Rick, I know the lemans rods are bricks. I guess the point I was trying to make there was as piston speed increases with a stroker the importance of a light reciprocating assembly becomes exponentially important to achieve high rpm duties. The Scat H-beams definately weren't designed with this in mind, more for a "budget" hi-performance build market. There are also high-dollar custom light weight pistons designed for hi-winding engines out there too. The LS7 went the hi-winding route, with titaium rods/valves, ultra light Mahl special cast pistons, light needle bearing roller rockers and small retainered bee-hive springs. There never was a factory built 427 S/O that ever spun like the LS7 does.. We've got 40 years of technology to thank for that..

Dave

[RICK LAKE]

Undy GM didn't learn from the last time with titanium parts on motors. They are trying a new process so they hold up better than the last motors that had major failures with titanium exhaust valves and went to stainless steel. GM ate some crate motors on this one. If Del West and some of the other Major valve builders say they still have not totally solved this breaking problem, I seriously doubt that the GM engineers have the problem fixed. Ps I work for GM for over 27 years and thank GM every day for these guys. They keep me maken money for my FORD replica car. Rick L.

[undy]

Hadn't heard of any LS7 valve problems, just them dropping.. when the bee-hive spring fractures as the rocker arm spits out it's needle bearings.. I've talked with a few of the Wixom boyz that build 'em ... and soon to be the new LS9. Gotta love that 5 yr, 100K mile drive train warranty.

...sorry, a little off topic back to our regular sceduled programming folks

Dave