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Old 09-11-2002, 04:23 PM
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Question Cranks, Rods and company question

I have a question for ya.
Ive been looking thru ebay at cranks, rods and such and I was wondering about something.
There are rods ranging from 5.7, 6.0 and 6.125.
There are forgings that are 5140 and 4340.
And companies like Eagle and Scat.
For my blown sbc, should I stick with 5.7 rods? or increase my stroke? If I go with 6 inch rods, what else will I have to change.
I also know the 4340 forgings are better than 5140 and 5140 is about 50% stronger than stock. Will 5140 be ok for a decent blower motor?
And last. Is scat and Eagle worth a poop?
Remember, Im building a street motor, not a drag car for the track. Thanks, HG

I was built with the body of a God! To bad it was buddah.

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Old 09-11-2002, 07:44 PM
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It all depends on how much power you want to make. I would use the longest rod possible because it takes stress of the piston. Use good pistons like JE or their sportsman line SRP. I have a Scat crank in my 406sbc that cost $200 and has lightening holes in it and is even knife edged. It survives 7000 rpm and 200hp of nitrous at the track even though it is still a cast steel crank. MY engine builder says that although they are imported cranks, Scat are some of the best money can buy especially for the street. Eagle rods rule. They are econimically priced and hold up to extreme abuse. MY buddy who drives a late model dirt track car has eagle rods in his motor that was built by Hatfield racing, last time he showed me his tack recall it went up to 8500rpm. Build a good bottom end and have it proffesionally balanced, and add boost and you'll have a whale of a street motor, by the way I hope it is a centrifugal supercharger you're putting on, prefferably an ATI procharger, IF it must be a roots supercharger please make it a BDS.
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