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Engine Underdrive pulleys

  • Thread starter Thread starter Mindseye007
  • Start date Start date Feb 1, 2026
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Willybill32

But at least it's tight!
5 Year Member
Jul 16, 2019
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Lexington, KY
Feb 14, 2026
#21
  • Feb 14, 2026
  • #21
Mindseye007 said:
Are you running underdrive pulleys ?
I'm running March underdrive pulleys with a 200amp alternator so sweet I could feel the hp power increase after they were installed. That was one of the first mods i did years ago. Wonder how the cobra pulleys are? But after watching this I think I might upgrade to the SVE pulleys.going to check the size specs for the March pulleys first.
View: https://youtu.be/Nkwg3lyZB_A?si=8A0-Kvz61jwboeAu
Click to expand...
I put under drive pullies on my ‘86 5.0 shortly after I bought it new. 98K miles on it now, and never a problem.

Bill
 
Reactions: Mindseye007 and AeroCoupe

Mindseye007

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Oct 21, 2020
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Feb 14, 2026
#22
  • Feb 14, 2026
  • #22
Willybill32 said:
I put under drive pullies on my ‘86 5.0 shortly after I bought it new. 98K miles on it now, and never a problem.

Bill
Click to expand...
Which pulleys did you buy? MARCH ?
 

Willybill32

But at least it's tight!
5 Year Member
Jul 16, 2019
626
347
83
Lexington, KY
Feb 14, 2026
#23
  • Feb 14, 2026
  • #23
Mindseye007 said:
Which pulleys did you buy? MARCH ?
Click to expand...
@Mindseye007, that was almost 40 years ago! At this point, I have no idea of the brand. I remember they were powder-coated black…

Bill
 
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