This is topic Underdrive Pulleys are they worth it????? in forum Tech Talk at Northern California Ford Owners  .


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Posted by shakalaka916 (Member # 6057) on :
 
Looking at maybe getting some underdrive pulleys.How much of a increase in coolant temp will there be is it a big increase 5 degress 10?? voltage?? how much are they to istall..
 

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Posted by 92stangLX (Member # 3252) on :
 
You should pickup some HP by installing pulleys. They shouldn't affect your water temp (mine didn't) if your cooling system is in good shape.

I never had a charging problem with mine. However, other people have. You should be able to install the pulleys yourself in an afternoon.

Good luck
 

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Posted by SmokinLX (Member # 1684) on :
 
Noticed a good increase with My 5.0. Keep Your original's then if You have a problem with cooling or alternator just swap back! Also with My car had to switch back to stock with supercharger install.
 

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Posted by six 5.0 (Member # 3153) on :
 
I think thier on of the best mods for the $$$$$. You can fell an increse of power right away. You can install em in 10/20 min.
 

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Posted by red GT black rallyes (Member # 4495) on :
 
yeah do the pulleys, i would say dont do the alternator pulley tho,
 

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Posted by blind (Member # 3052) on :
 
on most "underdrive" kits the alternator pulley is actually an "overdrive" so that you dont have charging problems.

so I would say DEFINATELY do the alternator if you do the others.
 

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Posted by Cobra5.0Jeep (Member # 1482) on :
 

quote:

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Originally posted by red GT black rallyes:
yeah do the pulleys, i would say dont do the alternator pulley tho,

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if he leaves the bigger pulley on the alternator the alternator will spin slower and he will have charging issues.

I have underdrive pulleys and during the summer i seemed to have a cooling problem but it might have been caused by air in the system not sure cause now it stays at the temp i want it to and never gets hot.
Also when i come to stops at night my headlights will dim down but its cool cause when i rev it it seems like the car is coming alive haha.
 

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Posted by 2coupe (Member # 2991) on :
 
I have the BBK aluminum ones on my fox. I haven't had a problem since and I changed all 3 (water, crank, and alternator). Definetely worth the money.
 

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Posted by PWR HNGRY 302 (Member # 6000) on :
 
I did it in about 30 min. It was a noticable diff. Iam happy with them.
 

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Posted by 94gt (Member # 3060) on :
 

quote:

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Originally posted by Cobra5.0Jeep:

quote:

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Originally posted by red GT black rallyes:
yeah do the pulleys, i would say dont do the alternator pulley tho,

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if he leaves the bigger pulley on the alternator the alternator will spin slower and he will have charging issues.

I have underdrive pulleys and during the summer i seemed to have a cooling problem but it might have been caused by air in the system not sure cause now it stays at the temp i want it to and never gets hot.
Also when i come to stops at night my headlights will dim down but its cool cause when i rev it it seems like the car is coming alive haha.

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lol, my 94gt did that SAME thing... I liked it.

FWIW, I know there are several guys on the Mach1reg that have had oil pumps fail on them after installing pullies. I believe it only affects the mach1/maurader engines, since its been proven ford went to a cheaper oil pump shaft.
 

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Posted by TRIXSNK (Member # 2844) on :
 
Sorry to jump in but if anyone is in need of a set for a 5.0 lmk

I have a set of March pullies never installed (polished)
 

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Posted by uh0h50 (Member # 3125) on :
 
how much for the march pullies trixsnk? you pm box is full
 

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Posted by twisted54 (Member # 1981) on :
 
No problems with my ASP water, alt and crank U/Ds...
 

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Posted by Luke87GT (Member # 21) on :
 
They were worth a solid tenth at the track for me...
 

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Posted by TRIXSNK (Member # 2844) on :
 

quote:

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Originally posted by uh0h50:
how much for the march pullies trixsnk? you pm box is full

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