Didn't really want to quote price as I thought I was getting a good deal, and might possibly want another one
but really I'm just paying normal price for a 4340 forged baseline crank plus a rod journal resize. 1136.00 It is a custom new forged crank that may get me my zero-deck, log-rod, light-piston 444ci/400 conversion with parts I had on hand.
Originally I wanted to downsize mains on a factory crank to obtain my zero-deck stroke of 4.040 since the block has been machined for a 10.220 deck height with 1.300CH pistons and 6.900 H-beam rods. Easier with the larger Pontiac rod journal 2.250. But through several years of being in the "the woods" waiting for a crank or getting ripped off, my experience is no one really wants to do that any more .. its hard enough to find someone who wants to modify a rod journal. I found Scat would grind rod journals on their forged Pontiac cranks which all have BBC journals. I decided to grind rod journals to -.020 to obtain room enough for stroke increase. Bought bearings and had them massaged by Paul(thrust surfaces), cryo'd and calico CT-1 treated. Then learned that most crank shops limit offset to 80% of journal reduction when Scat balked at grind time and wanted me to reduce journals further to -.030 for .020 offset. We are now negotiating but to get-r-dun I have suggested they grind to 80% journal reduction(offset of .016 for if they cant get uniform fillet integrity at desired .020) This will leave me down-hole .008 .. not what I want but can live with that if I have to. They had previously told me since this job just so happens to be being done from a raw forging I could specify thrust and journal grinds AND enough excess material would exist to get the offset and stroke I desired(4.040). But I guess in order to know for sure the raw forging has to be jigged and measured, which costs time=money and you don't normally do till you are actually going to grind it ... once on machine if a no-go then you just wasted $. Or grind something unsatisfactory which I don't think Scat would do.
I want to do a max effort factory crankshaft using the BME rods I have next. I have a nice straight 400N crank. Victor intake and Ultradyne NR100 solid roller possibly. For the little Astre possibly. I believe the fillet strength I can add by grinding full .125 radius rod journal fillets using the rods 2.100 SBC big-end diameter will be more important to the engine's success than additional stroke although 3.89 stroke sounds interesting
I would have the factory crank nitrided specially here in MA and entire r/a cryo'd by Paul. Grinder instruction would be ..
1. Dead-on crank, perfect index and uniform .125 fillet radius
2. Offset what you can per #1.
Will order pistons(CH) after