Crank Pulley diameter

97TunedMustang · February 7th, 2006, 02:54 PM

Ive looked around here and on google but i cant seem to find what the stock crank pulley diameter on a 97 3.8L. i saw the replacement underdrive version i believe is 5in but that doesnt help me. i think its a 7in but not sure. thanks

AtlanticBlue99 · February 7th, 2006, 03:31 PM

the stock crank pulley that came on my 1999 3.8L is 7" diameter. it is a 2 piece puller/harmonic balncer design. i swapped it out with a 42% smaller and aluminum motoblue pulley last year and it has since warped and cracked my harmonic balancer. ford has had so many problems with this that they now produce a 1 piece harmonic balancer/crank shaft pulley design for our cars. the part is $80 from ford as a 1 piece 7" unit. the power is much more smooth throught the rpm range with a new harmonic balncer and pulley.

97TunedMustang · February 7th, 2006, 07:26 PM

thats cool. thanks for the info

February 7th, 2006, 02:54 PM	#1
97TunedMustang Enthusiast Join Date: Jan 2006 Posts: 965 iTrader: 0 reviews	Crank Pulley diameter Ive looked around here and on google but i cant seem to find what the stock crank pulley diameter on a 97 3.8L. i saw the replacement underdrive version i believe is 5in but that doesnt help me. i think its a 7in but not sure. thanks

February 7th, 2006, 03:31 PM	#2
AtlanticBlue99 I Post Entirely Way Too Much 1999 Ford Mustang V6 14.79 @ 92.15 Join Date: Aug 2005 Location: University of Georgia Posts: 8,854 Blog Entries: 1 iTrader: 0 reviews	the stock crank pulley that came on my 1999 3.8L is 7" diameter. it is a 2 piece puller/harmonic balncer design. i swapped it out with a 42% smaller and aluminum motoblue pulley last year and it has since warped and cracked my harmonic balancer. ford has had so many problems with this that they now produce a 1 piece harmonic balancer/crank shaft pulley design for our cars. the part is $80 from ford as a 1 piece 7" unit. the power is much more smooth throught the rpm range with a new harmonic balncer and pulley. __________________ ModdedAutos 1999 Mustang V6 I used to list my mods here but stopped when I exceeded 255 characters.

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February 7th, 2006, 07:26 PM	#3
97TunedMustang Enthusiast Join Date: Jan 2006 Posts: 965 iTrader: 0 reviews	thats cool. thanks for the info

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