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We have .62 5th. Yes you are correct. At cruising we turn fewer RPM's with 4.30's, than previous 5 speed cars with 4.10's. From .67 to .62 is a 7.5% difference. From 4.10 to 4.30 is only a 5% difference.
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Ralph Greene
SOLD
03 Mach 1 (Torch Red) 5 Speed Manual
Real Ford FR 500 18X9 Wheels
255X40X18 Michelin Tires
Steeda Sport Springs (isolators in)
Tokico HP Struts/Shocks
Steeda 4 bolt CC Plates
Poly Offset Steering Rack Bushings
Steeda TriAx Shifter
Magnaflow X/Cats
Bassani Catback with Removable Baffles
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