question about spinning the motor to 7 grand
05-01-2008, 04:48 PM
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question about spinning the motor to 7 grand i have my motor apart and noticed a few of the rod bearings were a bit worn out so all new clevite main and rod bearings are going in. with these installed with a set of arp 2000 rod bolts can i spin the motor to 7k. my heads/cam setup should be pulling still at that rpm, but im still not sure if it is safe to spin it that high. any input would be greatly appreciated.
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05-02-2008, 02:28 PM
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i bought some clevite main bearings and clevite rod bearings. i have a brand new ported ls6 oil pump, and with the brand new hardened pushrods. here is the setup...
redone partiot ls6' milled to 59cc with 2.055 1.6 valves with patriot gold springs all setup to proper tolerences, spring pressure etc. ported typhoon 85mm intake with mathcing tb. 85mm fast toys lid. cam is a custom grind 231/238 .617 .608 ,comp hardend pushrods, pacesetter ceramic coated longtubes, slp underdrive pulley, gm mls head gaskets....and i cant think of anything else besides the new main bearings, rod bearings, and rod bolts. in theory the setup should perform rather well.
redone partiot ls6' milled to 59cc with 2.055 1.6 valves with patriot gold springs all setup to proper tolerences, spring pressure etc. ported typhoon 85mm intake with mathcing tb. 85mm fast toys lid. cam is a custom grind 231/238 .617 .608 ,comp hardend pushrods, pacesetter ceramic coated longtubes, slp underdrive pulley, gm mls head gaskets....and i cant think of anything else besides the new main bearings, rod bearings, and rod bolts. in theory the setup should perform rather well.
05-02-2008, 02:33 PM
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REALLY? I actually spun a bearing and didn't opt to rebuild the whole engine. Just had the crank turned, replaced the bearings a put in ARP rod bolts. Should i be concerned about reliability?
05-02-2008, 03:00 PM
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i spin my 99 SS to 7000 rpm on a regular bases with out a problem. so with rod bolts i would not worry about it one bit.
Last edited by styoung; 05-02-2008 at 03:01 PM. Reason: spelling
05-02-2008, 04:28 PM
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No but you did a half rebuilt. Did you blueprint and balance the setup? Did you check rods for roundness?
05-02-2008, 06:20 PM
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There was no blueprinting/balancing. The crank was sent to a machine shop, turned/polished. New rod-bolts/bearings were installed. The rods were inspected visually, which means that they were not checked for roundness I assume.
