xc_ute

I was told when my car was purchased that at sometime during the 1985 model run Ford increased the size of the pulleys on front of the engine to underdrive the water pump.

Can't recall seeing a 5.0 engine with pulleys larger then those on my 85 (engine built during November 1984). Can someone provide the size of the larger pulleys (NOT aftermarket units, factory units)?

619socalstang

the only underdrive pulley ever made by anybody is the crank pulley, alt. WP are bigger than stock.

xc_ute

Hum, never paid attention to that detail. Thanks.

roundman

you could always call the Ford racing parts tech line and ask them. see post at top of this section for the number.