6 Rib Limit
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,472
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From: Houston TX
St. Jude Donor '11
6 Rib Limit
I make ~14# with the stock ECS 6 rib pulley which is 3.25" without the restrictor. I do need to tighten the belt down good but when I do I avoid belt slip. I'm looking for a little more, say 17#'ish, but I'm not willing to swap everything out to 8 rib or add a flip drive. What do you think my odds are of getting away with a 3.125" Reichard pully? It would be an 8 rib but everything else would be 6.
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
We have not had any issues with the 3.25" pulley and a six rib as long as the belt is properly adjusted. Including nine second passes etc.
When you have your belt installed and fully tightened, see how much farther the tensioner will open at that point. You may need the next size smaller belt to get the tensioner to fully open when the engine is at rest.
In cooler weather we have repeatedly recorded 18 lbs from that combo on a stock LS2. If your cammed that will drop, but you get the point.
When you have your belt installed and fully tightened, see how much farther the tensioner will open at that point. You may need the next size smaller belt to get the tensioner to fully open when the engine is at rest.
In cooler weather we have repeatedly recorded 18 lbs from that combo on a stock LS2. If your cammed that will drop, but you get the point.
Thread Starter
Le Mans Master
Joined: Aug 2002
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From: Houston TX
St. Jude Donor '11
Hey Doug,
Yea I'm not seeing problems with 3.25" as long as I don't get lazy with tightening it. I see 14# with your cam when tight. I'm looking for ~17#. Would a 3.125" do that?
Yea I'm not seeing problems with 3.25" as long as I don't get lazy with tightening it. I see 14# with your cam when tight. I'm looking for ~17#. Would a 3.125" do that?
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
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Le Mans Master
Joined: Aug 2002
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From: Houston TX
St. Jude Donor '11
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
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St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12
Na, but I've been working under the assumption that it could let loose at any time for ~1 year now at 14# so whats a few more pounds?
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
402 topped with AFR's and 62/65's with .82 housings. I heard someone said those things to me a couple days ago and sure it all sounded good
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Melting Slicks
Joined: Oct 2000
Posts: 3,368
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From: dfw Texas
Na, but I've been working under the assumption that it could let loose at any time for ~1 year now at 14# so whats a few more pounds?
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
Cant have old Charlie murphy out ahead of you
Last edited by White_Lightning; Nov 8, 2011 at 07:26 PM.
Melting Slicks
Joined: Feb 2006
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From: Houston
Na, but I've been working under the assumption that it could let loose at any time for ~1 year now at 14# so whats a few more pounds?
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
Hanging out with Mr. Big and User_Name tends to shift your definition of "limit". I was reminded over the weekend that Big was pushing his stock LS2 harder than me for quite some time before he got tired of trying to break it and forged it.
IMO you are letting your cheapness get in the way of running fast and RELIABLE. The stock balancer is a piece of ****. I'll bet the stock balancer flexing is the cause of some people throwing belts and slippage. You gotta bite that bullet. While you are in there you may as well do the other 8-rib pulleys.
Damn. Can't believe I actually gave you the advice you need to beat me...
Melting Slicks
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
Shouldn't have posted this. I'm going to order a nitrous kit now.
IMO you are letting your cheapness get in the way of running fast and RELIABLE. The stock balancer is a piece of ****. I'll bet the stock balancer flexing is the cause of some people throwing belts and slippage. You gotta bite that bullet. While you are in there you may as well do the other 8-rib pulleys.
Damn. Can't believe I actually gave you the advice you need to beat me...
IMO you are letting your cheapness get in the way of running fast and RELIABLE. The stock balancer is a piece of ****. I'll bet the stock balancer flexing is the cause of some people throwing belts and slippage. You gotta bite that bullet. While you are in there you may as well do the other 8-rib pulleys.
Damn. Can't believe I actually gave you the advice you need to beat me...
Drifting
Joined: Sep 2005
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From: Bridgewater NJ
. 2500 in a C6Z, hmmmmm - do tell (after dinner of course..
)!
Former Vendor
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From: Plano Texas
Did you guys see Rickys pewter C5 with the D1 last weekend? 736 rwhp on 14 psi, 817 with a 50 shot 
He pilled it up to 100 shortly after. Its a stock LY6 engine ( low compression LS3) with a cam and D1 with spray 
Stock shortblock record?
Its a 6 rib too, but 3.6" upper, stock lower.
He pilled it up to 100 shortly after. Its a stock LY6 engine ( low compression LS3) with a cam and D1 with spray Stock shortblock record?
Its a 6 rib too, but 3.6" upper, stock lower.