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Anyone know the name or part# for the stepped headbolts to use 1/2 heads on a 5.0? thanx.
 

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7/16 head bolt with stepped shoulder/washers for 1/2 heads
Part# 154-3605 = has stepped washers

and 12 pt and stepped shoulder Part# 254-3708

both arp part numbers

about 130 a set

had to change sig pic, tired of looking at TC
 

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At summit arp-200-8598 for washers only, 2 kits required @ $40+ each. Complete bolt / washer kit arp-154-3605 @$92 1 kit required = no brainer.
 
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