Steve C, Tom S and Paul K, thanks for your thoughts about the springs for my application. I want to get this motor up and running on the Crane springs. I do not disagree with you that they are marginal for my application and that I should seriously consider swapping them out after this motor has proven that it is going to stay together.
So......I was back in the Crower catalog and found 68380X2 which has the same 1.460 OD as the Crane but a .093 smaller ID. As I recall, I should not have a problem with this ID. The springs should fit in the same space as the Cranes and I may be able keep my existing retainers. They don't burst the wallet either. At an IH of 1.800 Crower claims the spring should give me 197 on the seat and 474 open. I would probably run around a 1.840 IH based on these figures. My thought is to get the motor up and running again and once I get some gentle miles on it, swap out springs and pushrods for greater peace of mind but I invite the thoughts of others.
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71 Formula 433, Splayed cap 400 block, 4" stroke Scat forged crank, 6.8 Eagle rods, custom Autotec pistons. SD 295 KRE D ports, Old faithful hybrid roller, Torker II, Holley Sniper Stealth, Tribal Tubes, TKO 600, 3.73 Eaton posi.
Last edited by Formula8; 01-16-2016 at 04:18 PM.
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