Best Underdrive Pulley
SLP=Powerbond=about as heavy as a stocker, and they go for about $200 or so.
ASP=aluminum center so its one of the lightest, but I have seen some issues/complaints about them coming apart in the past
Summit=Cheapest and people started complaining about them as soon as they are released. I hope they stopped selling them
BBK=Don't know nothing about them.
ATI=hands down the best made, and most expensive price to match.
I'm running the 25% Powerbond. I think I found the best price at Maryland Speed under the SLP name.
ASP=aluminum center so its one of the lightest, but I have seen some issues/complaints about them coming apart in the past
Summit=Cheapest and people started complaining about them as soon as they are released. I hope they stopped selling them
BBK=Don't know nothing about them.
ATI=hands down the best made, and most expensive price to match.
I'm running the 25% Powerbond. I think I found the best price at Maryland Speed under the SLP name.
there was a thread on the Corvette Forum last year about this. There was a race team that was having a problem breaking timing chains and through research they found the problem directly coming from the balancer. In the end it was concluded that if you track the car where you hold rpm's between 3000 and up for extended time the only two balancers that did not cause chain breakage was the stock and the ATI balancer.
You can find the ATI on ebay for a little over $200 brand new. It just takes patience.
You can find the ATI on ebay for a little over $200 brand new. It just takes patience.
I see katech is currently doing more testing with ATI on some dampers.... be interesting to see what comes of that.
And also, quick question for anyone here, does anyone know off hand for certain if the included bolt that comes with the SLP balancer is reusable or not???
I cannot remember, been running mine for a couple years now, but getting ready to do another cam swap and want to know if I need to spend another $25 just for an arp, or if my current one is reusable??
And also, quick question for anyone here, does anyone know off hand for certain if the included bolt that comes with the SLP balancer is reusable or not???
I cannot remember, been running mine for a couple years now, but getting ready to do another cam swap and want to know if I need to spend another $25 just for an arp, or if my current one is reusable??
I have a March 25% UD. It is a fluiddamper type. It came with an undersized alt pulley to compensate for the UD. I don't use the alt pulley, though, because the 13.5 v the alt produces is more than enough.
I also find it pretty interesting that out of all the replies to a thread like this and not yet one complaint of a thrown belt, like some manufacturers claim is an issue... and I'm assuming that quite a few of you wind your motors up pretty high too? How many here are still running stock belt tensioner and how many a manual?
I also find it pretty interesting that out of all the replies to a thread like this and not yet one complaint of a thrown belt, like some manufacturers claim is an issue... and I'm assuming that quite a few of you wind your motors up pretty high too? How many here are still running stock belt tensioner and how many a manual?
I'm manual and I spin my motor up to 6.5K rpms. No point of spinning beyond that with my cam and my stock rod bolts.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
TECH Fanatic
Joined: Aug 2004
Posts: 1,375
Likes: 5
From: Auckland, Nth Is, New Zealand.
It's not that hard to buy an ARP bolt!
ShredSled: It's my w-end car that i also road race on occasion, so just added insurance with lifters 'ones i could afford' still change at 6500.
As for NZ...wish i was in the USA lol.
ShredSled: It's my w-end car that i also road race on occasion, so just added insurance with lifters 'ones i could afford' still change at 6500.
As for NZ...wish i was in the USA lol.
you probably just want access to the more abundant parts resources, huh?
I have a March pulley for years now; never had a problem. I can't remember what I paid, or what percentage its supposed to be. No charging, cooling, or power steering difference.
Not trying to start **** but this is right off of the SDPC site.
This kit includes a new shorter main drive belt, shorter a/c belt, and the SDPC High Performance 8740 chrome moly reusable balancer bolt.
http://sdparts.com/details/powerbond.../kpbu1480-ss25
This kit includes a new shorter main drive belt, shorter a/c belt, and the SDPC High Performance 8740 chrome moly reusable balancer bolt.
http://sdparts.com/details/powerbond.../kpbu1480-ss25
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
About the ARP bolt...........
New ARP harmonic balancer bolt for LS1, LS2, and LS6 engines. This is a 12 point head, chromemoly bolt with a black oxide finish. Yield strength is rated at 200,000 psi.
Could they be rebadging an ARP? Sure looks like one to me
Wasn't aware SDPC was in the bolt making business.
From WS6 store:
98-02 LS1 SLP Harmonic Balancer/Underdrive Pulley
SLP's new 25% underdrive balancer for LS1 F-Bodies incorporates a number of high-quality features you won't find on any other aftermarket unit. Chief among them are a pair of extra-tall belt-retention walls that eliminate the belt-slippage issues endemic to other LS1 balancers (see photo). Other unique design strengths include 100% steel construction (other brands use steel and aluminum), integral timing marks, and built-in puller-mounting threads. Includes a new balancer bolt and detailed installation instructions.
They are referring to a GM bolt here. I have seen the image relating and its a genuine GM bolt.
So, only the ARP is re-usable.
New ARP harmonic balancer bolt for LS1, LS2, and LS6 engines. This is a 12 point head, chromemoly bolt with a black oxide finish. Yield strength is rated at 200,000 psi.
Could they be rebadging an ARP? Sure looks like one to me
Wasn't aware SDPC was in the bolt making business.From WS6 store:
98-02 LS1 SLP Harmonic Balancer/Underdrive Pulley
SLP's new 25% underdrive balancer for LS1 F-Bodies incorporates a number of high-quality features you won't find on any other aftermarket unit. Chief among them are a pair of extra-tall belt-retention walls that eliminate the belt-slippage issues endemic to other LS1 balancers (see photo). Other unique design strengths include 100% steel construction (other brands use steel and aluminum), integral timing marks, and built-in puller-mounting threads. Includes a new balancer bolt and detailed installation instructions.
They are referring to a GM bolt here. I have seen the image relating and its a genuine GM bolt.
So, only the ARP is re-usable.
Registered User
Joined: Dec 2011
Posts: 1
Likes: 0
From: Rockville Centre, NY
About the ARP bolt...........
New ARP harmonic balancer bolt for LS1, LS2, and LS6 engines. This is a 12 point head, chromemoly bolt with a black oxide finish. Yield strength is rated at 200,000 psi.
Could they be rebadging an ARP? Sure looks like one to me Wasn't aware SDPC was in the bolt making business.
New ARP harmonic balancer bolt for LS1, LS2, and LS6 engines. This is a 12 point head, chromemoly bolt with a black oxide finish. Yield strength is rated at 200,000 psi.
Could they be rebadging an ARP? Sure looks like one to me
Wasn't aware SDPC was in the bolt making business.Also, real quick. I know for a fact ATI is the best you can get. But budget minded me wants to know a real world review on the March 4505 kit (steel fluid dampened) vs BBK 1592 kit. Going on a currently stock LS1 Camaro. Thanks.