L98 Underdrive Pulley question.
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
L98 Underdrive Pulley question.
I've been reading a lot of threads about underdrive pulley's and can't decide if I should buy the two piece or three piece pulley set.
I want to buy an "Aluminum" pulley set and have looked into "March", "Auto Specialties" and so, far Jegs has a BBK Aluminum 3 piece set for $139 which seems like a good deal.
Also, I know I would probably have to buy a shorter belt so, would the parts store be able to just pick a belt from the length I give instead of a part number? Thanks
I want to buy an "Aluminum" pulley set and have looked into "March", "Auto Specialties" and so, far Jegs has a BBK Aluminum 3 piece set for $139 which seems like a good deal.
Also, I know I would probably have to buy a shorter belt so, would the parts store be able to just pick a belt from the length I give instead of a part number? Thanks
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
I bought the underdrive crank pulley only, so the chances of having any charging or cooling issues was all but eliminated. It still slows the accessories down, but not to an extreme. Just that pulley is $60 or so at Mid America Motorworks.
As for the belt, not sure how it is out West, but every parts store counterman on this coast is clueless if the part is not listed on their computer screen...
A little tip:
A GATES belt will be K060 followed by the 3 digit belt length...In other words, a 56.5" long belt would be K060565, and a 56" long belt would be K060560, a 103.7" belt would be K061037 etc...
K = serpentine belt
06 = 6 ribs
xxxx = last four digits are length, with last digit being length shorter than a full inch.
A DAYCO belt reads the same way, but the first digits are 5060...
A few years ago I had a few supercharged cars so I had to know exactly what numbers meant what in order to get belts that fit...
Hope this helps.
As for the belt, not sure how it is out West, but every parts store counterman on this coast is clueless if the part is not listed on their computer screen...
A little tip:
A GATES belt will be K060 followed by the 3 digit belt length...In other words, a 56.5" long belt would be K060565, and a 56" long belt would be K060560, a 103.7" belt would be K061037 etc...
K = serpentine belt
06 = 6 ribs
xxxx = last four digits are length, with last digit being length shorter than a full inch.
A DAYCO belt reads the same way, but the first digits are 5060...
A few years ago I had a few supercharged cars so I had to know exactly what numbers meant what in order to get belts that fit...
Hope this helps.
Burning Brakes
Joined: Nov 2004
Posts: 1,057
Likes: 0
From: Warren Ohio
I'll let someone with an L98 help you with the 2pc vs. 3pc. issue...but I can tell you that most (ALL that I know of) manufacturers encode the # of ribs and belt length into the SKU#, so if you know what the length should be, they can hook you up.
Be prepared for a couple of trips to the store, though.
Be prepared for a couple of trips to the store, though.
Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
What I did was routed the stock belt as if to re-use it, and squeezed (or pinched) the belt together at any part that's easy to get to. Mark the old belt with a Sharpie on both sides that you have pinched together at the spot where it would be together if it was indeed the right length, then measure the distance between the marks...Mine was 2.5" shorter than stock, and using the tip I gave above I got one belt, installed it, and all was good.
Hopefully, the measuring was explained clear enough to help and not confuse, lol...
Hopefully, the measuring was explained clear enough to help and not confuse, lol...
Burning Brakes
Joined: May 2006
Posts: 1,097
Likes: 2
From: Richfield Utah
Drifting
Joined: Oct 2006
Posts: 1,934
Likes: 3
From: Citrus Heights California
Hey Homie, I'm from Citrus Heights. I got the March pullys. I think it's called the Amp series. I got 3 pullys. I never had any problems with the alternator charging the battery. I think you get about another 10 or 15 HP. The march kit gives you a guide that shows you what belt to use.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
Nice Engine Pic Kool88vette!
I'm probably going to go with the BBK 3 piece Aluminum Pulley set for $139 since the March Amp 3 piece pulley set is more expensive. I'll check out March's website for the belt guide.
Thanks for all the info!
I'm probably going to go with the BBK 3 piece Aluminum Pulley set for $139 since the March Amp 3 piece pulley set is more expensive. I'll check out March's website for the belt guide.
Thanks for all the info!
Last edited by GKK; Mar 5, 2007 at 11:12 PM.
Drifting
Joined: May 2003
Posts: 1,979
Likes: 48
From: Lakeport CA
I bought the March 3 piece kit years ago (close to 10), came w/ a belt. I saved a few bucks & went w/ the black, thought it was steel but never paid much attention.
Then when I rebuilt my short block 2 years ago noticed the paint coming off the crank pully. Used some paint stripper & guess what was underneath... yup, the polished alum. pulleys.
Then when I rebuilt my short block 2 years ago noticed the paint coming off the crank pully. Used some paint stripper & guess what was underneath... yup, the polished alum. pulleys.
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
I bought the March 3 piece kit years ago (close to 10), came w/ a belt. I saved a few bucks & went w/ the black, thought it was steel but never paid much attention.
Then when I rebuilt my short block 2 years ago noticed the paint coming off the crank pully. Used some paint stripper & guess what was underneath... yup, the polished alum. pulleys.
Then when I rebuilt my short block 2 years ago noticed the paint coming off the crank pully. Used some paint stripper & guess what was underneath... yup, the polished alum. pulleys.
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
I see that Summit has the ASP and JET pullies for my 95. Why are the Jet pulleys so expensive? How are the ASP pullies? Anyone using them? I looked at the BBK's on Jeggs but I believe they are probably for F-bodys. You may want to call and verify that the ones you are looking at will fit your car.
http://store.summitracing.com/egnsea...115+4294817292
http://www.jegs.com/webapp/wcs/store...0002_746139_-1
http://store.summitracing.com/egnsea...115+4294817292
http://www.jegs.com/webapp/wcs/store...0002_746139_-1
