DIY 8 Rib Conversion

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Oct 5, 2010 | 10:39 PM

#21

mygt500

Multi-Tasking Moderator!

Joined: Nov 2006

Posts: 15,618

From: Detroit Rock City!

Great write up Bruce!...I think this will make its way to be a sticky...

Oct 9, 2010 | 03:54 PM

#22

hammeron

6th Gear Member

Joined: May 2006

Posts: 11,883

From: Nicely done

good call mygt500!

congrats bruceh, you are now a sticky crew member :-)

Oct 22, 2010 | 10:40 PM

#23

DiMora

Joined: Sep 2009

Posts: 46

From: GA

Quote:

Originally Posted by BruceH

I just pieced together an 8 rib pulley set up for my motor.

Parts list:

YB542 A/C compressor clutch pulley

GP720 Alternator pulley

38052 8 Rib idler pulley

300-006 Power steering pulley

38028 76mm idler pulley X2

38022 90mm idler pulley

4081252 Goodyear gatorback belt

3.500" Whipple Cobra pulley

10% overdrive Innovators West balancer

All parts except for the supercharger pulley and balancer were purchased for under $200. The Whipple pulley was $55 used. Balancer was $425 shipped. A Navigator balancer could be substituted for under $100.

Did you use the same water pump pulley from the 6 rib setup?

Dec 31, 2011 | 10:53 AM

#24

tomkay

1st Gear Member

Joined: Jul 2011

Posts: 75

From: PA

alternator pulley doesn't fit

I just ordered the pulleys for my 2008 and everything was going ok until I got to the alternator. My car has the new clutch pulley on it and the GP720 does not. Is there an alternate 8 rib clutch pulley? Thanks for any help and for the great write up on 8 rib conversion.

Apr 2, 2012 | 04:35 PM

#25

Whippled06

Joined: Mar 2012

Posts: 4

From: Indiana

I saw all the part numbers you listed but where did you order all of these?

Apr 3, 2012 | 08:10 AM

#26

flounderlipps

2nd Gear Member

Joined: Mar 2006

Posts: 244

From: Confusion

Quote:

Originally Posted by Whippled06

I saw all the part numbers you listed but where did you order all of these?

Rock Auto
Do a part number search
Parts list:

YB542
GP720
38052
300-006
38028
38022
4081252
http://www.rockauto.com/catalog/raframecatalog.php

Last edited by flounderlipps; Apr 3, 2012 at 08:16 AM.

Apr 4, 2012 | 07:35 AM

#27

Whippled06

Joined: Mar 2012

Posts: 4

From: Indiana

Quote:

Originally Posted by BruceH

I went with a 3.5 because I also used a 10% overdrive balancer. I'm making more boost with that combination than I was with a 3.250 pulley and stock balancer.

All I can say is shop around. They turn up from time to time. Check ebay and the classifieds of all the forums you belong to.

How much before and after boost did you make? Is there any specific reason you went with the 3.5 instead of something even smaller?

Dec 26, 2012 | 05:18 AM

#28

crownaviation

Joined: Dec 2012

Posts: 21

From: ks

Some of those pullies (most) are from a 03-05 f250 6.0L turbodeisel econoline van IIRC. I found all but the AC compressor pulley at the local parts store. Paid more tho.. I just use my stock water pump pulley and no problems. Thump sells some real nice billet smooth idlers in an 8 rib also. They were worth it to me, and just upgraded to their 76mm dual bearing idlers.