Rebuild ls1 or buy a new motor opinions
06-20-2017, 12:26 AM
#1
Heel & Toe
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Rebuild ls1 or buy a new motor opinions?
hi id like to get some ideas and suggestions i should go with. I have an ls1 engine stock bottom with 150k miles. It has an a&a supercharger v3, stock cam, dual valve springs and a full exhaust. Tuned on pump fuel at 12psi making 500whp. My transmission is upgraded to handle up to 800hp. Cars been running great for awhile now just planning for which direction i should go to in my motor for the near future. A very reputable shop gave me a total quote of 8-10k to rebuild my engine. Thats from removing the ls1, teardown to bare block, rebuild/machining to a forged rotating assembly, installation and dyno tuning. Or should i just swap a new motor with my supercharger? And if so which shops are reputable for making such good engines? My max budget is 10k for parts and labor. My goal whp is 550-600. My main goal is it being reliable and would last a very long time without causing much headaches in the future. I dont beat on my car And drive conservatively for the most part. Any input would be appreciated.
Last edited by Rov213; 06-20-2017 at 12:32 AM.
06-20-2017, 01:50 AM
#2
Burning Brakes
With such a conservative goal, I'd find a " junkyard " 6.0 motor and have it re ringed and re bearinged then swapped out. Maybe even do an oil pump and timing chain. I'd assume you could do that with less than 1/2 your 10k budget. Tuned and out the door.
06-21-2017, 03:28 PM
#3
Burning Brakes
Im facing the same delimma myself. Stock engine right now, looking to go stage 2.
I have a z06 block, stock rebuilt crank w bearings, H beam rods and TFS has, as well as rearmount specific comp cam. I have a good ammount of engine build experience but never an LS. I was planning on doing it myself with an LS experianced person supervising.
My tuner is pushing toward the LS crate motor for boost from GM performance.roughly 6k, with forged crank roughly 8k. But its a drop in propositon and offers a warranty.
To be honest, I have doubts about the rods in the crate engine. Plus Id rather have the satisfaction of having speced and built it myself...if it blows, it will be my fault. So, leaning toward rolling my own.
However in your situation, the crate egine may offer some advantages.
I have a z06 block, stock rebuilt crank w bearings, H beam rods and TFS has, as well as rearmount specific comp cam. I have a good ammount of engine build experience but never an LS. I was planning on doing it myself with an LS experianced person supervising.
My tuner is pushing toward the LS crate motor for boost from GM performance.roughly 6k, with forged crank roughly 8k. But its a drop in propositon and offers a warranty.
To be honest, I have doubts about the rods in the crate engine. Plus Id rather have the satisfaction of having speced and built it myself...if it blows, it will be my fault. So, leaning toward rolling my own.
However in your situation, the crate egine may offer some advantages.
Last edited by StatmanRN; 06-21-2017 at 03:29 PM.
06-23-2017, 04:39 AM
#4
Le Mans Master
Im facing the same delimma myself. Stock engine right now, looking to go stage 2.
I have a z06 block, stock rebuilt crank w bearings, H beam rods and TFS has, as well as rearmount specific comp cam. I have a good ammount of engine build experience but never an LS. I was planning on doing it myself with an LS experianced person supervising.
My tuner is pushing toward the LS crate motor for boost from GM performance.roughly 6k, with forged crank roughly 8k. But its a drop in propositon and offers a warranty.
To be honest, I have doubts about the rods in the crate engine. Plus Id rather have the satisfaction of having speced and built it myself...if it blows, it will be my fault. So, leaning toward rolling my own.
However in your situation, the crate egine may offer some advantages.
I have a z06 block, stock rebuilt crank w bearings, H beam rods and TFS has, as well as rearmount specific comp cam. I have a good ammount of engine build experience but never an LS. I was planning on doing it myself with an LS experianced person supervising.
My tuner is pushing toward the LS crate motor for boost from GM performance.roughly 6k, with forged crank roughly 8k. But its a drop in propositon and offers a warranty.
To be honest, I have doubts about the rods in the crate engine. Plus Id rather have the satisfaction of having speced and built it myself...if it blows, it will be my fault. So, leaning toward rolling my own.
However in your situation, the crate egine may offer some advantages.
iron block 4.8, wiseco pistons, gen4 rods, all fresh see my add
or you could go with an L33 block and a forged setup (I have it too, being built now) for way less money if you want the lighter engine
shucks, I'll sell you my ls6 motor that has forged internals for WAY less than these guys are talking about and it's bolt in and go. I'm upgrading to the L33 with forged internals so it's available soon
lots of folks will sell you a reasonable short block ready to go
you can then sell your old engine for a few $$ too
06-23-2017, 04:58 AM
#5
Le Mans Master
Maybe a stingy dyno. 500 is low even for an auto at 12psi. What's it trap? I'd just put a cam in it, springs, add meth and gain 50-75hp. Definitely wouldn't run a 4.8 unless it's a racecar or high compression E gas boosted car.
06-23-2017, 08:38 AM
#6
Heel & Toe
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gee that's quite a of bit of $$ for your goals I have something for consideration
iron block 4.8, wiseco pistons, gen4 rods, all fresh see my add
or you could go with an L33 block and a forged setup (I have it too, being built now) for way less money if you want the lighter engine
shucks, I'll sell you my ls6 motor that has forged internals for WAY less than these guys are talking about and it's bolt in and go. I'm upgrading to the L33 with forged internals so it's available soon
lots of folks will sell you a reasonable short block ready to go
you can then sell your old engine for a few $$ too
iron block 4.8, wiseco pistons, gen4 rods, all fresh see my add
or you could go with an L33 block and a forged setup (I have it too, being built now) for way less money if you want the lighter engine
shucks, I'll sell you my ls6 motor that has forged internals for WAY less than these guys are talking about and it's bolt in and go. I'm upgrading to the L33 with forged internals so it's available soon
lots of folks will sell you a reasonable short block ready to go
you can then sell your old engine for a few $$ too
Last edited by Rov213; 06-23-2017 at 08:39 AM.
06-23-2017, 09:08 AM
#7
Burning Brakes
Also interested in the LS6.
Im hesitant to go with an iron block for handling reasons- something else about the GM engines I dont like.
Im hesitant to go with an iron block for handling reasons- something else about the GM engines I dont like.
Last edited by StatmanRN; 06-24-2017 at 07:01 AM.
06-23-2017, 10:13 AM
#8
lots of people making >600whp reliably on stock motors. 8-10k seems crazy. you could put forged pistons and rods in that ls1 with stock crank, and have it redone super cheap and be way stronger than what you would need at that power level.
I personally know a guy who made 1200whp+ on stock ls1 crank for quite awhile in ls9 block. I don't think its a great idea but point is that stock crank can hold 600whp easily.
I personally know a guy who made 1200whp+ on stock ls1 crank for quite awhile in ls9 block. I don't think its a great idea but point is that stock crank can hold 600whp easily.
06-23-2017, 11:15 AM
#9
Heel & Toe
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lots of people making >600whp reliably on stock motors. 8-10k seems crazy. you could put forged pistons and rods in that ls1 with stock crank, and have it redone super cheap and be way stronger than what you would need at that power level.
I personally know a guy who made 1200whp+ on stock ls1 crank for quite awhile in ls9 block. I don't think its a great idea but point is that stock crank can hold 600whp easily.
I personally know a guy who made 1200whp+ on stock ls1 crank for quite awhile in ls9 block. I don't think its a great idea but point is that stock crank can hold 600whp easily.