Originally Posted by Twostick
Originally Posted by HotRodDave
Originally Posted by NANKET
Originally Posted by HotRodDave
The better question is why did they not put the 440 CID short block under the hemi heads??? There wouldn't be any of this stupid debate about 426 hemi vs 440 6bbl, the hemi would have had the TQ like a 440 6 pack PLUS the top end of the hemi.


NASCAR had a 427 cubic inch rule. 7.0 liters. That’s why there are so many mid 60’s engines that size.
A 440 couldn’t run in NASCAR

406 ford
410 mercury
413 mopar
421 pontiac
425 Buick
426 mopar
427 ford chev

The reason for the 440+6 VS the hemi debate is the huge valves and ports on the hemi give away bottom end. So the Sox pack is out front early. The hemi was designed for nascar racing, it’s is a racing engine on the steeet.


My 5.7 pulls hard right off idle with heads as big as the 426 hemi... could it be the lack of displacement had more to do with the TQ advantage of the 440 vs 426? Like I said above there is a guaranteed 15+ lb feet of torque just in the displacement alone. The argument goes that the 440 had more TQ (duh, it's bigger) and the 426 had more HP but what if they had equal displacement? 15 lbs tq X 2.45 trans 1st gear X 3.91 rear gear = 144 lbs more tq at the wheels just because of the bigger displacement.


I think your 5.7 pulls that off because it doesn't have to deal with a 2.45 first gear and a 3.23 or 2.76 diff and only 3 gears. Hi tech engine management certainly doesn't hurt either but put a 727 and a 2.76 behind it in a 5500 lb Ram pickup and I think the experience will come up somewhat short of sporty. Peak torque on a Gen 3 is 4000 rpm +/-. On a 440 it was 2800.

Kevin


How many hemis or 6 packs came with a 2.76 gear?

I am not causing global warming, I am just trying to hold off a impending Ice Age!