Engine Underdrive pulleys

Willybill32 · Feb 14, 2026

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

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

Mindseye007 · Feb 14, 2026

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

Which pulleys did you buy? MARCH ?

Willybill32 · Feb 14, 2026

Mindseye007 said:
Which pulleys did you buy? MARCH ?

@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

Engine Underdrive pulleys

Willybill32

But at least it's tight!

Mindseye007

10 years still blowing strong

Willybill32

But at least it's tight!

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Engine Underdrive pulleys

Willybill32

But at least it's tight!

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10 years still blowing strong

Willybill32

But at least it's tight!

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