I'm looking at possibly buying a 1965 K-code 2+2, a San Jose car. Hopefully I will have some pictures soon! Maybe someone can lookup in the registry to see if the VIN is listed? - Jim
Hello all, newbie from Pacific Northwest
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- Official Post
Welcome to the Kommunity. You have a great driver Kar there,
What rear end gearing do you have?
-Fred-
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congrats on the new Kar!
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Welcome to the Kommunity. You have a great driver Kar there,
What rear end gearing do you have?
-Fred-
Fred - I counted turns (it's an open diff) and determined that it's 3.89. That's way too low for the T5 since it has low first and second ratios. I am going to put a 3.50 back in it (original ratio according to the door tag) and see how that feels. Getting a few other things sorted but it's running pretty well!
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- Official Post
Welcome to the Kommunity. You have a great driver Kar there,
What rear end gearing do you have?
-Fred-
Fred - I counted turns (it's an open diff) and determined that it's 3.89. That's way too low for the T5 since it has low first and second ratios. I am going to put a 3.50 back in it (original ratio according to the door tag) and see how that feels. Getting a few other things sorted but it's running pretty well!
Jim, Your change from 3.89 to 3.50 is not going to make as much difference as you might like. A jump to 3.25 or 3.00 should accomplish what you are seeking regarding first and second gear. I am unclear as to the first and second gear ratios in the T5 transmission however I would first just try starting off in second gear to see how that feels. With the 3.89, that may feel right as first gear and you have not had to crawl under the car to change the rear end to see the difference. It is easy enough to compute your overall gear ratio if you know the ratios of first and second gear in your T5. By computing the known gear ratios, it is easy to figure out what rear end ratio would be best for what you are seeking.
-Fred-
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Thanks for that, Fred. I know 3.50 is a bit of a comprimise. I've had Mustangs with T5s with 3.08 and 3.45 gears before. But I hope someday to locate a proper CR toploader to put back in so I wanted to have the 3.50 to match the original build.
I knew that my current ratio was probably 3.89 simply by seeing what RPM I was turning at 70 MPH in fourth (1:1). My 69 Boss 302 had 3.91 gears and I was very used to cruising at 4000 RPM in that. However, it was a 5 minute job to jack up the rear end, stick my phone under the car facing the driveshaft, spin the rear wheel ten times and watch the video to count driveshaft revolutions. Ezeey peezey
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- Official Post
Thanks for that, Fred. I know 3.50 is a bit of a comprimise. I've had Mustangs with T5s with 3.08 and 3.45 gears before. But I hope someday to locate a proper CR toploader to put back in so I wanted to have the 3.50 to match the original build.
I knew that my current ratio was probably 3.89 simply by seeing what RPM I was turning at 70 MPH in fourth (1:1). My 69 Boss 302 had 3.91 gears and I was very used to cruising at 4000 RPM in that. However, it was a 5 minute job to jack up the rear end, stick my phone under the car facing the driveshaft, spin the rear wheel ten times and watch the video to count driveshaft revolutions. Ezeey peezey
When you are ready for the proper HEH-T transmission, I do have several. Maybe even with your VIN?
-Fred-
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OK, well, yes! I am ready, especially for numbers matching
I had put an ad in lost and found. 5R09K157625.This HEH-T toploader was replaced by a shop in Southern California in 1999 with a T5 installation. The shop does not have any records (I have invoice from the work done for the PO). I would like to re-unite the VIN correct components!
It was removed in Santa Ana in the late 1999. Shop changed hands and no oldsters are there any more.
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