they usually start out about 1/8" long for the bevel length. the bevel will tell you how much has been cut. How much "bevel" can you see at the edge of the flywheel's machined surface at the outside edge just beyond where the pressure plate mounts? some rare instances when a flywheel was really warped, it can remove the metal more from one side(on a round object!! lol) till the low side cleans up. but the 168 tooth flywheel versions won't fit into some of the 153 tooth apps with smaller bell housing i.d.'s.Ĭasting numbers are cast into the engine side of the flywheel. other than that, all 2 piece seal sbc/bbc flywheels/flexplates will physically bolt up to all 2 piece seal sbc/bbc cranks, and 1 piece cranks with 1 piece flywheels. The 454bbc and 400sbc are different counterweight amounts. the pic link (posted by 1972L) of the weight made into in the casting above is a good example. The centering nub on the later model 1 piece seal cranks is a different diameter than the 2 piece seal cranks, and you'd definately know it was a mismatch. Considering the incredible amount of buggering that was done to this car, it wouldn't surprise me if it's got a 400 flywheel.and that's why I am asking the question. This is the engine and flywheel setup that came in the car when I bought it.but honestly, I drove it less than 5 miles before tearing it apart for a complete rebuild.so I really can't say whether the vibration was there before or not. I'm in the process now of trying to eliminate the easy possibilities first.I plan to first remove all accessory belts.I know, watch the temp closely as there's no water pumping.then remove the crank pulley. The harmonic balancer is also new aftermarket and came with the assembled engine from A&R. On the flywheel, I have a Zoom pressure plate.but I did not have the flywheel balanced. The vibration can be easily felt at 0mph just revving the engine. The car is rock-solid smooth at 80+ when I push in the clutch and coast. 3500 rpm), it starts developing a vibration.and it actually lessens a bit at approx. I have an M20 4-speed behind it with 3.42:1 gears. The engine is a 350 "clone" built by A&R in Virginia.very nice strong running mill.no complaints and no issues. Have a graph-looking thing with dotes also.Okay, maybe a little more info is in order. I have seen a few bellhousings with 80 in the circle these are obviously date codes. Needs maintenance).There are one or two circles divided in half that areĮngineering codes and may contain some sort of date code. Molds and dies to help with quality control(as in number seven cavity Aluminumīells? I saw discussion on a forum that the single number over the part # But, there are variations in the starterĭate codes: Most cast iron bells have an alpha numeric code. Inspection covers: I've found three different sizes for aluminum bells.ġ53 tooth, 168 tooth and truck. Places on the inside (starter hole, fork hole) with the outline of trans Paint: Most Chevy bellhousings I've come across were panted whileĪttached to the engine and transmission, and have over-spray in various On the 168 tooth bell, the starter is farther away from the crank center line and therefore needs more room in the bell. In the above photo you can see the difference between the starter sides of the two aluminum housings. Provisions, starter, clutch fork hole location and, of course, factory Mounting hole size, clutch fork ball stud locations, z-bar mounting
GM used engines fromīut, there are major differences to consider such as transmission With that said, most Chevy bells will physically fit Small Blocks fromġ955 on up, 6 cylinders from 1963 on, and all Big Block engines, WĮngines, as long as they are Chevrolet engines. Eventually aluminum became the only material for all factory bells. The early bells were cast iron with the aluminum bells being phased in. That a 11" clutch and pressure plate will fit.Ĭhevrolet has always had just two sizes of flywheel: Big (168 tooth 14"ĭiameter) and Small (153 tooth 12.75" diameter), with the 153 tooth Multiple bolt patterns, and the aftermarket makes a 153 tooth flywheel Teeth is more accurate because some 168 tooth flywheels are drilled with Flywheel Diameter (12.75" or 14") or number of Most people define Chevrolet Bellhousings by the Clutch size (i.e.ġ0.5",11", or 12").
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