Oldsmobile 374 stroker build

Olds 307 and 403

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Oct 4, 2018
872
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Melville, Saskatchewan
Ok so I lubed the tops of the bearing caps the same way with Permatex Ultraslick. I tapped the caps all into place. I trimmed off the ears on the AMC 258 main seal, lubed with ATF installed with the groove towards the motor and two small dabs of The Right Stuff. I set the thrust bearing by tightening down the center main bolts with a ratchet then backing off to finger tight. I then spun by the crank by hand tapping back, then foward with my plastic 2 pound dead blow hammer. I then torqued #3 to 80 ft/lbs with ARP lube on both sides of the washer and threads, along with all the mains. I then torqued the rest of the mains to ARP torque specs. The crank spins very easily by hand. I measured .008" for thrust clearance. .007" is loose and .009" is tight.
Ok so I lubed the tops of the bearing caps the same way with Permatex Ultraslick. I tapped the caps all into place. I trimmed off the ears on the AMC 258 main seal, lubed with ATF installed with the groove towards the motor and two small dabs of The Right Stuff. I set the thrust bearing by tightening down the center main bolts with a ratchet then backing off to finger tight. I then spun by the crank by hand tapping back, then foward with my plastic 2 pound dead blow hammer. I then torqued #3 to 80 ft/lbs with ARP lube on both sides of the washer and threads, along with all the mains. I then torqued the rest of the mains to ARP torque specs. The crank spins very easily by hand. I measured .008" for thrust clearance. .007" is loose and .009" is tight.
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Olds 307 and 403

Well-known member
Thread starter
Oct 4, 2018
872
262
63
Melville, Saskatchewan
Well, all the piston pin clips are in and I drew way too much blood installing them. Pretty much a PIA to do without the right tool. I talked to Cutlassefi about positioning these rods on the crank. Even though they are centered, one side is slightly wider, like .005" and goes towards "the cheek of the crank". I measured all of them with a caliper and marked with a small green dot on the wider side to position them properly on the crank.
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Olds 307 and 403

Well-known member
Thread starter
Oct 4, 2018
872
262
63
Melville, Saskatchewan
The first piston is in! I wiped the cylinders with ATF a couple of times, looked pretty clean. I see what was meant about ring compressors in another thread. The ratcheting band ring compressor I bought is useless! I actually ended up using my adjustable wrinkle band ring compressor. I positioned all the rings per Mahle's diagram. I put the lube that came with the Molnar rods on the cap bolts. I need to find the torque specs, I will contact Mark, if needed. It involves a torque angle gauge.
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