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#41
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What was the "Change Alert " posted on the PHS ?
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#42
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here is the PHS from the TWR race car
I believe this car is a 3.73 "COZ" with a Muncie M20. The original rear end is with the vehicle. I only assumed it is/was an M20 car since there is no RPO noting a change to an M21.
Was there not an option RPO code to designate the option for upgrading to an M21? Asking because I do not know. Interesting that your car, only a few serial numbers away from our car, also went to NJ. Sorry I meant no intention of hi jacking your thread. |
#43
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keith k 70 Trans Am RA III / T400 / Lucerne Blue / Bright Blue 70 Trans Am RA III / M20 / Lucerne Blue / Sandalwood 70 Formula RA III / M21 / Lucerne Blue / Bright Blue |
The Following 2 Users Say Thank You to keith k For This Useful Post: | ||
#44
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I would have assumed your TA was originally a M21 car by the options on the PHS. Do you have any of the original drivetrain? I’m really curious of the casting dates on your block/heads/intake/manifolds… etc. I don’t have the original engine or transmission. I had a wild guess that the casting dates would fall around November 1969 (just a guess based on a hunch).
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#45
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Interesting. I was just looking at the PHS on my ‘70 TA and it is exactly the same as yours, except I have an option for floor mats ($6.15). I always assumed that my car was an M20/3.55 car, but this thread has me wondering. The car is restored but has all its original parts. Is it possible it has an M21 in it? How can I tell? Sent from my iPhone using Tapatalk
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Three times the sound peaks, falls back, peaks again. A throttling back to cruising speed, a dwindling grumble of thunder and...gone. The frogs take up where they left off. |
#46
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Mine was built later and shipped to MI. My casting dates are all April 1970.
Sent from my iPhone using Tapatalk
__________________
Three times the sound peaks, falls back, peaks again. A throttling back to cruising speed, a dwindling grumble of thunder and...gone. The frogs take up where they left off. |
#47
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Congratulations to the OP on his purchase!. I actually saw this car when I was looking for my TA. Best of luck with it! If you find the manual trans you want to run and are interested in getting rid of the M40, let me know. I’m looking at building a Pontiac bracket car.
Sent from my iPhone using Tapatalk
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Three times the sound peaks, falls back, peaks again. A throttling back to cruising speed, a dwindling grumble of thunder and...gone. The frogs take up where they left off. |
#48
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With a M20 the first gear will be “shorter” and accelerate better initially in first gear (maybe go 45 mph in first at redline). It will also have a noticeable drop or “bog” when shifting from 3rd to 4th under acceleration. A M21 will have “longer” first gear acceleration (maybe 50-55mph at redline) and will continue to accelerate better with less rpm drop between gears. You won’t have that “bog” when going from 3rd to 4th under acceleration. I think that’s the best I can describe it
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#49
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
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