assassin10000

FYI: there are other people who have had issues, and are still cropping up. So check your bore & fitment. Slightly warped heads, off-center holes, bore size variance can all cause a problem on YOUR motor.

ARP studs are a 'race' product and checking things before assembly is part of your job building a motor... unless you have a shop do it that will warranty it.

Andrew

Some comparisons With new tire size(s).


Fwy Speeds in 5th

185/60R14 (195/50R15 is very close):
W58 & 4.56 = 65 mph @ 3550 rpm (80 @ 4375)
W58 & 4.77 = 65 mph @ 3725 rpm (80 @ 4575)
W58 & 4.88 = 65 mph @ 3800 rpm (80 @ 4675)

195/60R14 (205/50R15 is very close):
W58 & 4.56 = 65 mph @ 3475 rpm (80 @ 4375)
W58 & 4.77 = 65 mph @ 3650 rpm (80 @ 4500)
W58 & 4.88 = 65 mph @ 3725 rpm (80 @ 4575)



Top Speed in each gear


185/60R14 (195/50R15 is very close):
W58 & 4.88 = 30.5 / 53.0 / 78.7 / 100.3 / 128.1 (7.5k)

W58 & 4.56 = 34.9 / 60.5 / 89.8 / 114.5 / 146.3 (8k)
W58 & 4.77 = 33.3 / 57.8 / 85.9 / 109.5 / 139.8 (8k)
W58 & 4.88 = 32.6 / 56.5 / 83.9 / 107.0 / 136.7 (8k)

195/60R14 (205/50R15 is very close):
W58 & 4.56 = 35.6 / 61.7 / 91.7 / 116.9 / 149.3 (8k)
W58 & 4.77 = 34.0 / 59.0 / 87.7 / 111.8 / 142.7 (8k)
W58 & 4.88 = 33.3 / 57.7 / 85.7 / 109.2 / 139.5 (8k)


VS

S13/14/15 (SR20 & KA 5 speed, @ 7500 RPM redline, when using 225/45R17 tires.)
S-Chassis & 4.08:1 = 39.7 / 69.3 / 100.8 / 131.8 / 157.3
S-Chassis & 4.375:1 = 37.0 / 64.7 / 94.1 / 123.0 / 146.8
S-Chassis & 4.636:1 = 35.0 / 61.1 / 88.8 / 116.1 / 138.6