6.2 aluminum block is at machine shop being checked out. New cam bearings installed, checking crank. When it gets back, gonna notch these pistons and get it ready to put my existing cam in and see what it can do with less weight and more cubes. I plan on milling a total of .050 off heads, instead of the .020 I have now. I have lost 42 lbs, the motor should put me down another 80 or so. The car has went 6.24 with a 9.7 or so compression ratio on my 6.0, we are hoping to see at least some 6.0s, maybe squeak out a 5.99. I'll keep you posted. I got this engine free from a 09 Escalade. (I love budget builds).

 

.050 off LS3 heads is about a 1 point jump in comp, 100#lighter.....I think your goal is not a problem.
I think a bigger cam will be following soon too

 

Well, let us know the total weight. I'm going to see how quick the 89 coupe will be with square ports and a forged 370 NA. Then hit I with some gas and lock the converter so the slippage isn't a issue. That's the plan anyway.

 

Motor is supposed to be picked up today. I have 3 weeks before NMRA, so not sure I will try to get it in by then. I have to paint my sons hood and bumper, install his gears and a few other little things on his car.

 

This will be interesting. The weight is a win for sure, the rest is just gravy.

 

What grit ball hone do you guys recommend for my final hone to cylinders? Im going to be using stock rings as I think I like GMs rings as well as or better than the Mahle I used on my 6.0.

 

Is it worth it to mess with trying to find a lindy tool to notch valves, or just use the rig I did last time? I glued some coarse paper to head of valve and cut them. This time I am thinking of buying a spare valve so I can mark the stem and quit guessing at depth.

 

I bet the Lindy would be faster and easier.

 

I bet you're right, if I could just find one local.

 

If you are in Ky then Tooley has one

 

Hey, I'm not too far away in Southern IN, if there is any of the old 6.0 stuff you wanna get rid of I'm wanting to build a 6.0 for my drag car!!

 

Keeping the 6.0 for a back up. Now, before the heads go to the machine shop, I am rethinking this 1 last time. Probably overthinking it. But rather be safe as sorry. If I mill .050 off these heads, that will put me roughly in 11.5-1 comp ratio. I am going to try both carbs, pump gas and our alcohol carb to see which it likes better. Is 11.5 going to force me to pull more timing? If so, would I be better off to just mill like .030 so I could keep the timing? Or is compression worth more than the higher timing? LOL. I can post cam specs if needed. The cam for now will just be my current 6.0 cam anyway.

 

That is the raggedy *** edge of pump gas. If you were able to run corn, then I would run as much as 12.5:1 and let it eat. More compression will probably net -1 or -2 less degrees maybe. Hard to tell without doing it and finding out what the combination likes at the track(or dyno for those up scale folk).

 

I would not be even a little scared of 11.5:1.

Also, Brenton at THR tells me that around .040" he starts to have to tweak things to make the intake fit.

Maybe just mill another .010" for .030" total. That should be around 11.2 with fly-cuts in the pistons.

 

.050 here and no issues with intake fit, but I did use gaskets instead of the O-rings.

 

Shortblock should be assembled this weekend. I'm gonna try and get heads apart so they can get to machine shop. Once they get back I can notch pistons, re clean everything and get the long block together. Im gonna clear the aluminum block, I think the aluminum will look good with the black accessories my engine has. Getting kind of excited to install this thing.

 

Short block together. heads at machine shop getting milled. it may be put in the car this weekend, not sure just yet.

 

Will be curious to see if the close to 100 pds weight loss and slightly larger bore, will help offset the loss from nixing the steel block???

I don't hink the OEM aluminum blocks seal up nearly as tight as their iron counterparts do when it comes to blow by
Good luck

 

Say wut?

 

I might tend to agree if it was a max effort deal. But I'm willing to put money in this thing being quicker. The weight loss, compression gain and cubes, even tho it's only 12 cubic inches, will be quicker.the valves will be unshrouded, which so many have said is a problem with Ls3 heads on a 6.0. Although it's not much, I don't see how 065 can help unshroud the valves much. Lol