2000 6.8 v10 cams

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Apr 5, 2024 | 09:30 PM

JustinLB

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Mountain Pass

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2000 6.8 v10 cams

So I know in the old school engines you could use a cam from an RV in the pickup to get that little extra power so my question is do the v10s in the RVs have different cams that would do the same thing or are they the same as what's in the pickups and excursions?

Apr 6, 2024 | 07:00 PM

Toreador_Diesel

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From: Houston, Texas

The pickups and Excursions run the same cam. There are folks who sell modded cams for the V10 but they're few and far it between.

Apr 7, 2024 | 11:56 AM

redford

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From: Stephensville WI

An internet search will show you a few companies that will grind you V-10 performance cams. There is no off-the-shelf RV cam for this engine. RV cams were popular when the SBC were everywhere. That era ended 20 years ago.

Apr 7, 2024 | 01:31 PM

'89F2urd

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a set of long tubes is one of the best things you can do for your v10. after that, forced induction is the most cost effective way of achieving power. Cam swaps on modulars are pricey af

Apr 8, 2024 | 03:32 PM

redford

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From: Stephensville WI

The easiest and possibly cheapest way to get more torque is to change the differential gearing.

Apr 9, 2024 | 07:07 PM

JustinLB

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Mountain Pass

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Quote:

Originally Posted by redford

The easiest and possibly cheapest way to get more torque is to change the differential gearing.

I built the truck so it's an f550 4x4 with 4.88's. it's got 24" semi wheels and 35" tires so I'm not sure what gearing that makes it. Also is a little over 18,000lbs. What gearing would be recommend with the setup and how hard is it to regear?

Apr 10, 2024 | 10:46 AM

redford

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From: Stephensville WI

Quote:

Originally Posted by JustinLB

Yes, the 35 inch tires are what is killing torque.

I’m guessing that you have a Dana S135 rear differential. I think the available ring and pinion sets for those is 4.88, 5.13, and 5.38.

You increased your tire diameter about 10%, so regearing with the 5.38 ratio would be very close to correct to restore the stock effective gear ratio.

A shade tree mechanic can change differential gearing, but I think most of us, including me, should pay an experienced mechanic that has the required tools to do this correctly.

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Apr 14, 2024 | 09:08 AM

speedfreak78

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It's been years since i looked into 6.8 cams, but I didn't think anyone made blank cores for the 6.8 cams for awhile now? Do they regrind stock cams on a smaller base circle? Can these cam be welded and reground? I thought I read they're ground on hollow shafts and can't be modified?

You're problem is the weight, you're hauling around the weight of 2+ normal trucks. 4.88s and 35's in a CCLB pickup would be pretty fun, most people run a 4.11/4.56 with that tire size to get back to stock, or slightly better than stock, performance. If you want more acceleration, you nee the 5.13/5.38's or higher if it's available, but that's gonna kill your top end speed and cruising MPGs. What are you willing to compromise on?