Poncho article: SD VS HO, tribesman chime in:

[JLerum]

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I think the interesting thing is that the 429hp/544tq still only put the car at a 12.88 time.

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I don't have my issue in front of me, but I know the S/S Poncho racers I've talked to are always sacrificing TQ to cheat the HP further up the rpm range...the higher powerband lets them take advantage of steeper gears...

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Not to bad mouth a GM product. Pontiacs are cool but McCarthey on the Super Stock website says Pontiacs make great torque but have issues with motor RPM acceleration. It can't get out of its own way after a certain point. Jack loves his Pontiacs but has that engineering Super Stock side of him.

JIM

[yellowjudge]

The 71/2 HO TAs are really the most overlooked cars in the hobby. Beef up the bottom end & you've got a great runner, or a hot date!!! HA

[JLP]

Nah, put that HO in the T-37. Always overlooked because of the dog dish hubcaps. Kinda like some of the COPO's. LOL. Course I am kinda prejudiced. Ya have to watch those dog dishes though, cause it usually means there is a mean dog around to bite you. And not in the rear.

[tirebird]

Those are tough numbers to believe are stock. In 71(2nd Gen), the Pontiac LS5 455HO was advt. as 335hp/480lbs tq. at the flywheel, pre-SAE adjusted numbers. All the magazine tests I read ran the cars in the 14's sometimes 13's. The best first generation cars, with Ram Air 1V L67 400 engines were easily in the 13's,..with some turning 12's.

Now, I know all the articles about my car said it was a high 13sec. car with the stock 71 LS5 455HO.

In 1973, the first LS2 455SD was offered, with lower c.r., then the HO(8:1 compared to 8.4:1), and was factory rated at 290hp/390tq.

One magazine test ran it at 13.54/104.2 in the quarter. Now, of course, all these engines were underated and the 73SD, I think, was the new SAE net hp. rating.

They were still fast cars. I'm just happy that Pontiac, in 1973, refused to sell the 2nd owner of my car, Tom Senter, an HD prompting Tom to call Berger to purchase an LS6 BBC warranty replacement engine for $750.

I don't know what the true hp/tq. of this engine is but Tom, with the "grand rodent" under the hood of the Tirebird, turned consistent 11's at 115. I'm too chicken to chance a catastrophic failure by trying to duplicate Tom's numbers at the track.

[Johnny Horsepower]

I read that article immediatley. Seems pretty strait up, and while suprising i believe it. Now i just want both instead of just the superduty to go with my other Pontiacs.
Poncho power

[JLerum]

[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
I think the interesting thing is that the 429hp/544tq still only put the car at a 12.88 time.

[/ QUOTE ]
I don't have my issue in front of me, but I know the S/S Poncho racers I've talked to are always sacrificing TQ to cheat the HP further up the rpm range...the higher powerband lets them take advantage of steeper gears...

[/ QUOTE ]

Not to bad mouth a GM product. Pontiacs are cool but McCarthey on the Super Stock website says Pontiacs make great torque but have issues with motor RPM acceleration. It can't get out of its own way after a certain point. Jack loves his Pontiacs but has that engineering Super Stock side of him.

JIM

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Here is the forum that I was refering to about the engine acceleration of the Poncho. For what it's worth????????

http://superstockforum.com/showthread.ph...ighlight=slicks


Jim