Riv_fanatics Posted February 23, 2022 Share Posted February 23, 2022 Dear Fellas! Killed my engine last year summer, cuz of low oil content, but the engine has lot of marks and pittings on crank i see, when i opened the crank main bearings to look about the condition of them, so i wasn`t surprised, that it happened, but crank looks terrible after that, no more bearing existing, they melted away... 🙄 Then it takes more then a half year to get the camshaft... 🤮 I think he used Sealed Power pistons in .030 over, new water pump, new bearings everywhere, crank gets grinded, new oil pump, MSD ignition, new stainless valves, remanufactured rockers and a special cam called "His secret", its rounded up with a 650 Holley, he can better tune then a Edelbrock he said and finally get a tune on a hub dyno... Enjoy the machine porn here... 😁 Regards, Ron 3 1 Link to comment Share on other sites More sharing options...
s_hilmoe Posted February 23, 2022 Share Posted February 23, 2022 Looks nice! You may check into using a bigger carb though. Link to comment Share on other sites More sharing options...
old-tank Posted February 23, 2022 Share Posted February 23, 2022 Those rockers look like the ones used on the earlier and smaller nailheads.?? 1 Link to comment Share on other sites More sharing options...
Riv_fanatics Posted February 24, 2022 Author Share Posted February 24, 2022 It was original a 364 in there previous owner swapped to a 62-64 401, unsure what he did on the valvetrain, is their any difference in measurement, thought all 364=401=425 have the same head? Link to comment Share on other sites More sharing options...
Riv_fanatics Posted February 24, 2022 Author Share Posted February 24, 2022 20 hours ago, s_hilmoe said: Looks nice! You may check into using a bigger carb though. Are you distributor of Centerville Auto Repair maybe, the Martin&Martin Co Company, all rights deserved?! Link to comment Share on other sites More sharing options...
old-tank Posted February 24, 2022 Share Posted February 24, 2022 Search "rocker ratios" The early nailheads used 1.5:1 ratio; later nails used 1.6:1 ratio and the arms were aluminum for quick identification 2 Link to comment Share on other sites More sharing options...
old-tank Posted February 24, 2022 Share Posted February 24, 2022 http://www.rockerarms.com/pages/gm.html 1 Link to comment Share on other sites More sharing options...
s_hilmoe Posted February 25, 2022 Share Posted February 25, 2022 On 2/24/2022 at 7:34 AM, Riv_fanatics said: Are you distributor of Centerville Auto Repair maybe, the Martin&Martin Co Company, all rights deserved?! Nope, Just a car guy in Washington. 1 Link to comment Share on other sites More sharing options...
NTX5467 Posted March 1, 2022 Share Posted March 1, 2022 Same cyl head for 364 to 455? My gut suspicion is that they are NOT the same. Reason? Cyl bore diameters and valve sizes. The 401 uses 1.8" intake valves and 1.5" exhaust valves. If the 455 cyl bore diameter is larger than the 401, then I suspect the 455s would have larger valves as a part of the mix. Just a thought, NTX5467 Link to comment Share on other sites More sharing options...
Riv_fanatics Posted March 2, 2022 Author Share Posted March 2, 2022 No, the 1st and 2nd Nailheads r different to 3rd gen, iirc only 364-401-425 from '57-'66 have the same heads and valves... Link to comment Share on other sites More sharing options...
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