jvog

So I went and picked up a remanufactered water pump today and it is a good bit shorter than my old one. My tuner had said that it looked like I had a lightning water pump on my car before. Looking online, the lightning pump does look to be about the same size. Am I correct in assuming the the new pump won't work with the pulley off the old one since its shorter and should I get a different pulley or another lightning water pump..

Frostbitten

id try to get the correct one for an 02 gt. They both flow the same amount

CAMDUP

the GT's had 2 diff pumps......96-01 1/2 was a shorter pump and 01 1/2-04 was a longer pump (it may be the other way around).....jvog i have my original pump with hardly any miles on it , you can have it if you want it ....just let me know

jvog

Well the pump I got was for an 02 GT and its a lot shorter then my original one. Camd can ya measure it for me?

Thumper2Kewl

i ran into that problem myself on my conversion, i was going to use the gt pulley on the mark 8 engine but the mark 8 pump was longer so i just used the lincoln pully instead, i do still have the pully for the short pump if you can use it.

jvog

Yea I could use it. Whats the difference, just that one pulley has more backspacing then the other take make it stick out further.

Thumper2Kewl

well the 2 pulley's i had look quite a bit different but effectively the only difference is the backspacing. the only other difference is the gt pulley has a flange to keep the belt from coming off the front of the engine, and the mark 8 doesnt.

jvog

Oh ok

CAMDUP

from the surface that the pulley bolts to ..... to the surface that meets the block is 2 5/8"

jvog

Thats the same size this one is. thumper2kewl I will take that water pump pulley if I can still have it. Shoot me a PM. I am going out of town for 5 days but I will PM you back when I return.