Joey Mack Posted December 16, 2020 Share Posted December 16, 2020 Hello, Does anyone know the part number for the head studs, My studs bores are 5/8X11 thread, The tops are fine thread..? I was about to install my heads and when I opened the boxes of studs that i have. They were smaller, Probably 9/16".... I guess there for an END 18 hole engine.. I have a 20 hole engine.. Thanks, Jojo Quote Link to comment Share on other sites More sharing options...
fjh Posted December 16, 2020 Share Posted December 16, 2020 Jojo you’re familiar with the pai site check there the crossover should show up there! Quote Link to comment Share on other sites More sharing options...
Freightrain Posted December 16, 2020 Share Posted December 16, 2020 Back when I had to replace a couple studs on my 673, I was going to check with ARP and see if they had something comparable. I never did check as I came up with a couple oem studs. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Joey Mack Posted December 16, 2020 Author Share Posted December 16, 2020 I will check PAI,, Thanks again, "F" Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted December 16, 2020 Share Posted December 16, 2020 I was working for mack when the 20 stud block was changed from studs to cap screws. The best i can remember was same block was used on the first maxidyne which used cap screws plus the different liner that used the fire ring head gasket and a groove in the head.So check the cap screws out for a replacement for studs.The first ENDT 673C used studs Quote glenn akers Link to comment Share on other sites More sharing options...
Joey Mack Posted December 17, 2020 Author Share Posted December 17, 2020 Yes sir, I know what your saying, My customer wants it original, I may be able to convince him to use bolts... Talked to him today, w'ell see... I think e-7's had sae threads... 5/8x11..... Thanks for youre input, Jojo Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted December 17, 2020 Share Posted December 17, 2020 E7is metric Quote glenn akers Link to comment Share on other sites More sharing options...
Joey Mack Posted December 17, 2020 Author Share Posted December 17, 2020 thanks,, I had a brain fart, I dont do as many anymore. I built an e-7 3 months ago, but off course forgot ... Thanks again... I'm getting rusty:) Quote Link to comment Share on other sites More sharing options...
KKERGALL Posted December 17, 2020 Share Posted December 17, 2020 610GC1123 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted December 17, 2020 Author Share Posted December 17, 2020 Thank you very much!!!! Jojo Quote Link to comment Share on other sites More sharing options...
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