Pinto Weight Loss Diet
I have run both a BS Pinto 2.0 liter in the '70's and an ITB 2.3 in the '90's. I have this to tell you.
"If it ain't broke...". Nothing wrong with the 6 3/4 at the rear of the 2.3, even in modified form. Weight reduction with the 6 3/4 is significant, and the additional strength is UN NEEDED. GT Pinto guys use the 8 inch because the rules allow it. Incidentally, the 8 inch is illegal (in my opinion) since it was not offered with the 2.3...only the V-6, and the wagon. Gearing of the 6 3/4 is good, using the 3.55 already in the earlier units. Drum bBrakes are the same, except for the station wagon, which are illegal for the sedan.
The stock earlier gearbox is strong, and the gearing is great for most tracks...At Nelson Ledges, second gear works for turn 13, third the rest of the track and fourth on the straight.
If you run the '74 Pinto, you have the choice of the 2.0 or the 2.3. Check carefully, but with the lower weight of the 2.0, and the slightly larger brakes of the '74, the smaller engine might be an advantage. At least one that I know of was surprisingly FAST in the class. Check the wording of the rules re: VIN numbers. You may now be able to run later chassis with the earlier engine choice and weight.
Use the Weber 32/36 DGV optional carb due to the larger choke housing and better approach to the venturi, and you will see more power tha n the 5200 Motocraft (Holley/Weber stock carb).
Use light weight 13x6 steel wheels (extremely cheap, too) for further wieght reduction.
Hope some of this stuff helps.
Bill
Last edited by billf; 02-28-2008 at 12:36 AM.
Bill Frieder
MGP Racing
Buffalo, New York
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