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Old 06-15-2006, 11:39 PM
Keithc8 Keithc8 is offline
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Join Date: Mar 2003
Location: Arkadelphia, AR, AR
Cobra Make, Engine: Kirkham 427 brushed aluminum with Keith Craft 527C.I. all aluminum FE
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The kits include the crankshaft, H-beam rods, Diamond pistons, Mahle rings, Federal Mogul bearings, piston pins and locks. The balancing runs extra because it depends on the crank stroke and bobweight. Some of the balance jobs require more heavy metal than others. Most of the balance jobs will run 175.00 for no metal to about 350 for the 4.240 stroke with 3 pieces of heavy metal. We can balance the pressure plate if it is sent in and would need to flywheel that it will balance to. We then stamp them so they go back on the way that they were balanced. Hope this helps a little.
The cycle time is the most important thing about the used parts to consider and we do not have that answer. We have used the 390 steel truck crankshaft a lot in our 428 NHRA Super Stock engines. We off-set ground them to 3.997 because the rules allowed us a plus .015 stroke to the crankshaft. These cranks worked fine for a few years untill we started to make 720 to 740HP and turn these engine 8000 to 8400rpms. We had a main bearing problem and had not had this problem before. We wet magged the crankshaft and it had a crack in the radius. Then when we were freshening one of the other engines we found a small crack as well. The customer ask me what was going on and I told him that I did not know how the guy that drove the dump truck that the crank came out of had driven 35 years ago. We wet magged all of these crankshafts as well hear treated them and even cryoed some of them. They just reached a point where they could not take it. I do agree that most of the regular FE parts will work fine in most cases if checked right as long as you do not make much more than550 to 600HP. This use to be a lot for a FE engine but not any more so this is the reason for using mostly new parts. I also like the BBC 2.200 wide rod journal for bearing life. I use the original FE parts all the time in the restoration engines we do.
I for one wish it was all cheaper and easier. Thanks, Keith
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