Nah just word of mouth,...I don't recall the exact details of the conversation as it was so long ago,..but I do remember it was intriguing
Great information Jim. Whats interesting is the information about the cam breakage. I stumbled upon this video recently and wonder even at low speeds comparatively that these old engines could use some deep analysis to ensure cam, rocker, push rod and valve stability.
k Depending on how frustrated you are with your stupid POS +$=&(@!/÷×?% computer, the most effective way to blow up your screen is with an M-80. Please note that in this case there is no "restore" feature.
Huge difference between the blue printed engines the factory dynoed and what was typically delivered.
Way late to the party.. Iv'e read so many posts about members talking to Dennis Manner and one was that the factory figures were from a fully dressed Stage1 "air cleaner, full exhaust, etc. on the dyno.. Would a "non" Stage1 make more torque or does it just come in quicker than mid range? I hate to ask but have you built or seen a stock 70 Olds 455 W-30 on a dyno? Does it come close to 500 ft.lbs.? Ok also watching Nick Garage vids and yes I know these are blue printed engines he's running and knows the tricks of the trade in Mopars but i'm seeing so called stock 440's do almost exactly 375 hp and 480 to 490 ft.lbs or a bit more just like they are factory rated.. Don't hate me members, I have to ask
You can also press and hold CTL and use the scroll wheel on your mouse to go either bigger or smaller.
As to the OP - I had heard many years ago that the 426 Hemi's horsepower was wildly underrated by Chrysler. The actual horsepower in the full-boot 426 was supposedly a tad over 500 hp wide open. This seems reasonable to me - there's no way that Mopar would have built as heavy and as expensive an engine as the Hemi without a big payback.
The 400 hp Stage one came from the factory with a lot more gear. I hate to say this, but with the same gear ratios, the Hemi would eat a stage one alive.
You mean rear gear? I wouldn't think the Buick 3.64 or 3.42 would have that much of an advantage over the Hemi 3.23 to compare to about 100 HP difference.
Hemi Cuda had a 3.54 rear gear...split the difference. I don't think gearing made much, if any, difference. I personally heard Denny Manner state to all that would listen 376 hp on the dyno. Period. Buick did have a couple of aces up their sleeve but it wasn't horsepower. Optimized is the word.
The Buicks got their reputation on the street,...moreso than the track,...the BB trans,. G60 tires and 3.42 and 3.64 gears were no accident While the 375hp Chevelles and and 426 Cudas and challengers were spinning,..buick had downshifted dug in and put 2 cars on them..and at that point a 500hp car cant get by a 375hp car b4 120mph
Does anyone remember the trap speeds when Lassiter and Badie raced? That will tell the tale. The GS was mid 12's vs. the Hemi's low 13's.
Yup, carefully selected gears, kick down etc. built for stop light street racing, all on a sloppy built factory motor. Ad in a nice blue printed rebuild like Jim mentioned and those optimized pieces are just even better. Why did Buick put so much effort and money in this new Big Block and build them with the worse tolerances?
