Hey everybody, I'm interested in doing this mod next but have no idea where to start. Can anyone tell me what they have and where they got it?

'87 350 TPI
no smog or A/C belts
thankz

 

I installed a set of march underdrive pulleys. surprisingly it actually went a tenth and a half faster. these time were run on consecutive weekends in the same weather conditions. my e.t. then went from a 13.65 to a 13.50. your 87 has v belts on it though, but i imagine the results would be similar. jegs and summit both carry underdrive pullies.

 

Underdrive pulley dont really do anything...

MAYBE HP 4-5 at the FLYWHEEL.

Spend your money elsewhere.

 

[/QUOTE] Underdrive pulley dont really do anything...

MAYBE HP 4-5 at the FLYWHEEL.

Spend your money elsewhere.


Ummmm... then why did i pick up when i installed them???

 

By the time the power goes through your whole drivetrain...pulleys would not do much.....

 

cant you rev faster with less rotating mass, and thats why the times are better?

 

My opinion is that you have to find horsepower where you can within money limits of course. I say if you can pick up 5HP then its a go. Allen

 

Svelte_ss: BBK makes a 3pc aluminum underdrive for the 85-87 serp/v-belt combo pulleys for $119 available through www.jegs.com

 

I got the March pulleys pretty cheap on ebay. I think it is worth the money.

 

I saw that March set on ebay. It looked like just a 2 piece set. I was thinking about getting it but how's that different from the 3 piece set from jegs? Will I be missing a piece?
I don't have a serpentine belt, just one belt for my alternator, and a seperate one for my power steering pump.

 

1987 factory pulleys looked like this:


if that is what yours look like, the bbk pulley set jegs p/n is: 129-1598 the bbk set is a 3 piece set (wp, crank, alt) made out of billet aluminum, price: $119.99

the march 2 pc pulley set jegs p/n is: 655-4020; this is a set made from stamped steel and powdercoated black,(includes crank and alt. pulley) price: $79.99

the march 3 pc pulley set jegs p/n is: 655-4030; this set is made from billet aluminum and polished, price: $199.99

 

Those things are bitches to install also.

 

how do you figure? you just gotta loosen everything up with the belts still on! then take the belt off, replace pulleys, hand tight bolts, reinstall belt, retighten bolts, never easier. if you have an air compressor and an impact-gun, it's that much easier.