[muscle_collector]

Originally Posted by MikeNoun

That film of the 70 vs 71 Judge has always been one of my favorites! That's part of a much longer promotional film on the 1971 Pontiacs.

They never made the Ram Air Super Duty (LS-1) because of the unavailability of the forged connecting rods. Existing orders for the LS-1 engine in the 1970 Formula and Trans Am were not processed. On May 5th 1970, Pontiac announced the immediate release of the RAIV engine for the Formula and Trans Am as a replacement for the Ram Air Super Duty.

Mike

it funny they listed the ra4 as a sd on the phs of the trans ams in 70

[gto4door]

Originally Posted by Kenth

http://www.wallaceracing.com/pontiac-70-71-race.htm

"No longer downloadable." ??

Bummer! Looks like I missed getting to view this video again. Thats what I get for sleeping on the keyboard.

[Lloyd-TX]

Originally Posted by gto4door

Bummer! Looks like I missed getting to view this video again. Thats what I get for sleeping on the keyboard.

That's OK John . . . I'll invite you over to my place for a Mike Noun video viewing marathon when my DVD arrives, LOL!

[Lloyd-TX]

Note that the '71 Judge in this video is definitely a pre-production car. Witness the chrome air cleaner lid and '66-'70 metallic blue engine paint.

['ol Pinion head]

Originally Posted by Lloyd-TX

Note that the '71 Judge in this video is definitely a pre-production car. Witness the chrome air cleaner lid and '66-'70 metallic blue engine paint.

Couldnt get the video to load before it was taken down... darn 1st gen IPad.

Lloyd, did the two cars have manufacturer plates on them? Did the video show pics under the hood of the '70.

[Judge273]

Roger, I tried to view it on iPad as well. No luck on windows either. But, I remember the one before.

Fact that it gets removed must mean its not authorized users.

['ol Pinion head]

Thanks Mike, am going to pony up for a CD.

[Lloyd-TX]

Originally Posted by 'ol Pinion head

Couldnt get the video to load before it was taken down... darn 1st gen IPad.

Lloyd, did the two cars have manufacturer plates on them? Did the video show pics under the hood of the '70.

Hey Roger - no front plates on either car in the still shots, and in the "drag race" the rear plates are visible but unreadable, as the cars are further away from the camera and in motion.

They never opened the hood on the '70, but I'm "educated guessing" that it's a M21 455 car. Just a hunch . . .

[north]

I have the video from Mike and it's pretty clear to me that they are comparing a 70 455 versus a 71 455 HO. In reality if you look at period road tests from reputable (meaning not using obvious ringers) magazines they both ran about the same in the low 15's.

Obviously gearing, transmissions and AC all have huge effect on performance. The integrity of Pontiac was stretched to the breaking point (or beyond it) in 71 with all this mumbo-jumbo about "tractive force" claiming that ALL Pontiac engines had same or better tractive force than 1970.

In theory it made sense since shortening the gearing of a car will increase the force applied to the wheel but the problem with their claim is that in most cases the gearing did not change from 70 to 71. All the standard and optional ratios on the 400's were unchanged and the 455 automatic (no manuals were offered in 71 on 455 non HO) also had the same ratio as in 70.

The only place there was a change was with the 455 HO but since it had no comparative engine the year before (the 455 or the RAIII or IV?) it's hard to compare; 3.55 for 71 HO verses 3.31 in 70 455 and 3.55 in 70 RAIII or 3.90 in the RAIV.

Funny how they make this sound like some great scientific breakthrough when all these axle ratios had been available for years. No mention of course of the major negatives of numerically higher gearing; worse fuel economy, more engine wear, lower top speed and higher noise levels.

[JamRSW6]

Just placed the order. Looking forward to watching it! Thanks for putting this together for us Pontiac nuts.

[68gtoMN]

Order confirmed!