Is a 383 stroker kit in a 5.3L gen 4 a bad Idea?
08-16-2017, 05:05 PM
#11
Boring your 5.3 to a 5.7 or building a 383(which would do the same anyway) would not decrease the durability at all. The difference is in the machine work and assembly as to whether it will last. Using a 4032 forging would be better for your app than a 2618 as far as pistons go for a 4 inch stroke. Mahle has those in their powerpak line The 4 inch stroke will make some good tq and you dont have to go big on the cam either.
Going either of those ways you are basically going to have a "new" engine with 0 miles. Buying from the jy etc youre stuck with (normally) quite a few miles etc.
Going either of those ways you are basically going to have a "new" engine with 0 miles. Buying from the jy etc youre stuck with (normally) quite a few miles etc.
08-16-2017, 05:38 PM
#12
Boring your 5.3 to a 5.7 or building a 383(which would do the same anyway) would not decrease the durability at all. The difference is in the machine work and assembly as to whether it will last. Using a 4032 forging would be better for your app than a 2618 as far as pistons go for a 4 inch stroke. Mahle has those in their powerpak line The 4 inch stroke will make some good tq and you dont have to go big on the cam either.
Going either of those ways you are basically going to have a "new" engine with 0 miles. Buying from the jy etc youre stuck with (normally) quite a few miles etc.
Going either of those ways you are basically going to have a "new" engine with 0 miles. Buying from the jy etc youre stuck with (normally) quite a few miles etc.
08-16-2017, 05:45 PM
#13
Tighter ptb less noise and expansion issues. Pratt and Miller and Katech use them in their ls and lt race engines and they beat the hell out of them. They dont use 2618 for quite a few reasons in that app im sure.
Straight jumping to 2618 and looking over 4032 is common, but id much rather have hyper e or 4032 for a dd. Even using small amounts of boost or nitrous. The ls7, ls9, lt1, and lt4 engines are all 4032 also afaik.
The mahle powerpak (mostly 4032) have always performed well for us AND have a better price point also.
Straight jumping to 2618 and looking over 4032 is common, but id much rather have hyper e or 4032 for a dd. Even using small amounts of boost or nitrous. The ls7, ls9, lt1, and lt4 engines are all 4032 also afaik.
The mahle powerpak (mostly 4032) have always performed well for us AND have a better price point also.
08-16-2017, 06:19 PM
#15
The orig gm pistons were pretty crappy. Esp for skirt wear. The OG 6.0 pistons didnt have a coated skirt even. They are better now but still have issues. The aftermarket mahle/silvolite we sell with our std rebuild kits have quite a few additional details like better alloy and even some with a hard anodized top to raise the durability.
Plus most piston companies use a low tension oil ring. Alot of the mahle dont which helps with pcv issues and oil consumption. Even their new 1.0/1.0/2.0 ring pack. They revamped their ring sets too. Pretty trick.
I like them for alot more than DD but they work well for that also!
Plus most piston companies use a low tension oil ring. Alot of the mahle dont which helps with pcv issues and oil consumption. Even their new 1.0/1.0/2.0 ring pack. They revamped their ring sets too. Pretty trick.
I like them for alot more than DD but they work well for that also!
08-16-2017, 06:25 PM
#16
Im not trashing any of the other piston companies by any means. We sell alot of wiseco and diamond also. Wiseco will laugh though if you ask for 4032 and with diamond its an option for custom pistons but they will try to talk you out of them also. This may be why they are so oft overlooked i guess.
I obviously like mahle alot and they have a huge piston selection. Wiseco has trimmed down their ls lineup ALOT. Its shocking. I would use any of those 3 and also includ another overlooked brand ICON. But that is me personally. Ill see the customer anything they want. Some swear by other brands like ross, probe, etc. That is great, just dont overlook all the others becaus of that though.
I obviously like mahle alot and they have a huge piston selection. Wiseco has trimmed down their ls lineup ALOT. Its shocking. I would use any of those 3 and also includ another overlooked brand ICON. But that is me personally. Ill see the customer anything they want. Some swear by other brands like ross, probe, etc. That is great, just dont overlook all the others becaus of that though.
08-16-2017, 09:51 PM
#17
Teching In
Thread Starter
I'm wandering how many parts I can use from my low mileage gen 4 5.3 on a ly6 6.0 block? Ebay has tons of takeout engines but many are more than $2000 and anything with lower than 70k miles is more. I can get a new GM 6.0l block for $1000, a new GM crank for $320 and a set of pistons and rods for $1000. I think I can do this whole 6.0 liter build with a mild cam for less than $3000
08-16-2017, 10:10 PM
#18
Everything swaps over save for pistons.
Building a forged 6.0 for just a dd is really spending a bunch of money where it isnt needed. The forged engine would make no more power in stock cid than a reg rebuild would and for what you are doing would really not be any more durable etc.
That is the main problem with ALOT of builds. They can get out of control for no reason. Of course we could spend all of your money for you and youd have forged everything, but part of our mantra in guiding the customers is making the best product for the best price. Its hard to stay grounded and some people say its overkill for peace of mind...but its really not. The rest of the money would be better put to use somewhere else like trans or gears or cai etc.
Building a forged 6.0 for just a dd is really spending a bunch of money where it isnt needed. The forged engine would make no more power in stock cid than a reg rebuild would and for what you are doing would really not be any more durable etc.
That is the main problem with ALOT of builds. They can get out of control for no reason. Of course we could spend all of your money for you and youd have forged everything, but part of our mantra in guiding the customers is making the best product for the best price. Its hard to stay grounded and some people say its overkill for peace of mind...but its really not. The rest of the money would be better put to use somewhere else like trans or gears or cai etc.
09-18-2017, 07:19 PM
#19
Teching In
Thread Starter
My 6.0L gen 4 engine came today. It's out of a low mileage 2008 savanna 3500. I noticed the heads are stamped 823. Is this the L92 head? Probably going to ask for a discount because the intake manifold is broken where the throttle body bolts on. I looked up gm online parts and found the Savanna intake part# 12580678 is not a truck manifold. Looks like my 5.3 intake is the same part# 12580420 as the 6.0 truck engines. I thought the 243 heads had a cathedral port and the L92 heads are rectangle.