1974 Camaro HELP!
Question:
Hi, I’ve just bought a 1974 V-8 350 Camaro. It is registered as a Z28 but I’d like to be sure about it in order to import specific spare parts from the US. The car’s VIN is: IQ87 H4N 153714 (or could be 1087… or I087… or 1Q…) it is not very clear. If someone can find this VIN in some manual and answer these few questions I’ll be very grateful: 1) Is it a Z28 or a LT? 2) Nominal Horsepower of the Engine. (At the moment it has a 2 barrel roche. carburetor but I would not bet it has always been this way. The engine has clear signs that it was reconstructed) 3) How can I find out by simple inspection if it has POSITIVE TRACTION DIFFERENTIAL or "Positraction"? Thanks in advance. Patrick Ward, Los Aguilera 430, Concepcion, CHILE.
Response:
> 3) How can I find out by simple inspection if it has POSITIVE TRACTION > DIFFERENTIAL or "Positraction"?
A lot of people seem to wonder what gear ratio is in their differential, and if the differential is Positraction (limited slip) or not. Well, here is how you can find out : 1. Park the vehicle on a level surface, put blocks around the front wheels, put it in neutral, and shut the engine off. Release the parking brake. 2. Jack up the rear end so that both rear tires are off the ground. BE CAREFUL – make sure the car does’nt roll. 3. Grab one rear tire and turn it by hand. If the other rear wheel turns in the SAME direction (or not at all) then it is a properly functioning positraction unit. If the other wheel turns in the opposite direction, then it is an open differential (or the positraction is not functioning properly). 4. Make a chalk mark on the rear tire and on the drive shaft. 5. Rotate the tire 10 complete turns while someone counts the number of complete rotations that the drive shaft makes. 6. Divide the number of drive shaft rotations by 10. That will tell you the gear ratio. For example, if the drive shaft made 33 and one tenth (33.1) rotations while the wheel made 10 rotations, then the gear ratio is 33.1/10.0 = 3.31 . You could also look under the rear seat for a build sheet. The factory build sheet would list all the options originally installed on the vehicle. "If I don’t read the net news, somebody else will." ____ _____ _____ _ / / | | (Dan Carr) – –==== ,—’ `–. / /__ |____/ |____/ (Research Systems) – –==== `–O—O-’ / | | (Boulder, Colorado) E l C a m i n o ! 1968 CHEVROLET EL CAMINO SS 396 (396, at, ps, pdb, tach) – current project. 1972 CHEVROLET EL CAMINO SS 454 (454, at, power, cowl induction, tach, etc.) 1971 BUICK GS-350 (60K original miles, daily driver). ’71-’72 GMC SPRINT SP (WANTED).
Response:
Related Posts