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You'll be fine, where did you find a 6.90 long rod? The popular rods are 6.70, 6.80 and 7.10. I've seen a couple of other lengths but never 6.90.
I was thinking I had seen a 6.9. But, I went back and looked and I was wrong. Back to the figuring. 
What about 4.5 stroke with a 6.8 rod? It figures to be .054 down in the hole. Will that combo pull too much out at BDC?
Last edited by Von; 02/25/09 01:49 PM.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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