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09-27-2009, 02:30 PM | #1 |
Registered User
Join Date: Nov 2008
Location: Oklahoma City Oklahoma
Posts: 431
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Lowering block question
I was getting ready to order some 2 inch lowering blocks from cpp and they have a note saying that 2 inch blocks are not "recomended" for 15 inch wheels. Why is that?
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09-27-2009, 03:35 PM | #2 |
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Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,064
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Re: Lowering block question
The bottom of the u-bolts & shock plates will be lower than the lip of the wheel. If you have a blow-out while @ speed, there's a definite possibility the u-bolt & shock plate could dig-in to mother earth & ruin a perfectly good truck ('cause that's what will happen if it catches on something).
This is commonly referred to as hanging 'below the scrubline'. 1.5" blocks are about the max w/a 15" wheel. There are many that run 2" & 3" blocks & say it's not an issue; but it can happen. If you run a larger diameter wheel (17's,18's, 20's), the lip of the wheel will be below the u-bolt/shock plate & above the scrub-line.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. Last edited by SCOTI; 09-27-2009 at 03:35 PM. |
09-27-2009, 03:50 PM | #3 |
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Join Date: Nov 2008
Location: Oklahoma City Oklahoma
Posts: 431
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Re: Lowering block question
Thanks for the help. I went out and looked at my truck and it doesn't look to me like I can use blocks at all. The bottom of the u-bolts are already pretty close to the bottom of the rim. Does this look normal?
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09-27-2009, 06:16 PM | #4 |
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Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,064
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Re: Lowering block question
That's stock/OE configuration. Blocks can/would go between the truck arm & the pad under the rear housing tube. It would require longer specialty u-bolts (not available @ the local parts house).
You could do 1.5" blocks & 15" rims.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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