It's a great all around camshaft. I ran one for eight thousand miles and had no complaints except for the sewing machine noise. 99% sure it was the cheap $100 Delphi bulk LS7 lifters. Running Morel 6504 lifters now with zero noise on a TSP grind.

Sloppy all assembly lubed up. Knew the engine would sit for a few months so I wanted a good film...

Aint it purdy though

 

Yeah from what Iv read it’s a good all around cam for a 6.0. I use this truck for pulling sxs’s through mountains in Tennessee so I wanted something that wouldn’t sacrifice power down low and this seems to be what keeps coming back up

 

In that case the Summit 8720 Truck cam would be a better choice. Won't sacrifice power down low and if you do a search, you'll see it keeps right up with bigger cams on the top.

Actually here's a video below comparing the SS2 to the SUM8720 in a modified 5.3L (don't worry about the title, these tests are NA). Start at the 16:30 mark. You'll see both the Summit 8706, SS2, and Summit 8720 all line up on top of each other from 5500rpm-7000rpm. But the 8720 makes more torque from 3000-5500rpm than either of those other cams. That means more average torque from 3000-7000rpm. And you'll even feel more of a difference in part throttle and medium loads. The 8720 would be a much better cam for towing.

 

If the test is in a 5.3 wouldn’t the results be different for a 6.0? Iv seen people say the ss2 looses bottom end in the 5.3 and in a 6.0 you loose nothing anywhere

 

Well with the 6.0, by the time you add headers, gear, convertor, and tune it probably feels pretty similar to stock even though you've lost some. The 8720 will probably feel better than stock putting around, and more easily pull loads uphill without having to downshift as soon and often. Especially if you're running the stock LQ4 compression.

As far as the top end with a 6.0, the 8720 still has enough duration (and added lift) that even with the extra cubes, the peak hp (and corresponding rpm) will be the same as the SS2. What will happen is after peak horsepower, and the curve starts to come down, the 8720 will fall off a little sooner. But by then you will have already shifted, so it won't matter.

Now, if you had heavily ported heads and higher flowing intake (like a 102mm Fast LSXr), or a stroker kit, then the SS2 to would have some top end advantage. Or if you were autocrossing and planned to hold some rpm beyond peak to avoid gear changing, then maybe the larger cam would be better.

 

Well damn!

That 228 cam should work just fine in that setup, I wouldn't go any bigger though personally, since it's in a truck.

 

I was planning on a set of shaved and ported 243’s or 706’s when I did the cam swap. Looks like it’s getting a 14 bolt now tho. Second 10 bolt died this past weekend.

 

Eh, in most cases the 10 bolt is plenty fine, it's the OE components like the diff that isn't the best for thrashing on, especially burnouts where one tire gets going too fast and the diff locks and shatters. If it's just the diff put a real diff in it and move on man. Better axles aren't too expensive either.

 

Sorry, it's been a while since we were here. We like the SS2 if this was more of a hot street truck that didn't tow. Being that you're towing SxS's up and down mountains we would look into something designed more for the low and mid-range.

We like the Pro LS stage 2 truck high lift SUM-8720 that 68Formula mentioned and explained very well. It will have better torque lower in the range with its 39* IVC vs. the SS2's 42* IVC. As 68Formula said, the gears and converter will help aid the SS2. Those would help the 8720 even more so in that range. The 8720 will have some lope to it with its -1* IVO. More so with the idle speed turned down if that's something you're after. With PAC 1218 springs it will be happy to sing to 6,700+ rpm if you were feeling sporty. We carry those through Trickflow as TFS-16918-16.

Another good fit we could see being used here is our Pro LS stage 3 truck cam SUM-8713. Specs on it are .550/.550, 222/232, 112+5 with 3* of overlap. The IVC on this cam is 38*, a tick earlier than the 8720. The earlier 53* EVO helps reduce pumping losses and carry power up top. This cam would match up well with your open exhaust, gears, and converter. It will have a nice steady lope with a 4* IVO but be easy to tune and live with. One nice thing with this cam is it will be happy to 6,700+ rpm with budget-friendly LS6 springs. A popular upgrade option would be the previously mentioned PAC 1218 springs.

You could use any three of these cams with your combo. It comes down to where and when do you want the power and torque to be.

We like the plan of some worked over factory heads. We understand the budget for those may be moved to the rearend for now. Either one of those options would be a great improvement. It comes down to where do you see the build going and how will the truck be used. For sheer compression and towing you can't go wrong with 706's. Having them milled with a bowl blend and possibly a larger intake valve would wake up your 6.0. Then you have the ever-popular 243's. Those have been the go-to factory head for quite some time. Milling them for the compression bump would be a benefit in itself. With the bowls and ports cleaned up, they will work wonders for your combo now and on down the road.

You already have a nice clean truck with a good foundation to build on. A good head and cam package will greatly improve the performance of the truck. The bonus is you'll likely have a big ol' smile when you get it out and get to tow with it after the swap!

 

Never had blew apart a g80 luckily. This time it’s the pinion bearing going out it seems like.


I was thinking 706’s because I already have a set off the stock 5.3 that came from the truck. And seems everyone local to me is proud of their 243’s. Might just hold off on the cam on this truck for a little tho. Finally got the c10 running good and I’ll be happy with it for a while.