Any thoughts or input is greatly appreciated
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Teching In
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Any thoughts or input is greatly appreciated I was wondering if someone could take a look at the setup I plan I running for my ls1?
The block is a ls1 stock bore was just honed. I am taking the crankshaft to the machine shop later this week due to the engine spun a rod bearing on cylinder 6. So if all checks out I will be using the stock block with stock bore and stock crankshaft.
The rods are bad and one of the pistons has a hot spot on the top of it as if it started to melt.
I am thinking of going the route of new rods new pistons and 243's.
Rods:
LS1 Scat 4340 I-Beam Connecting Rods 6.125" w/ ARP 8740 7/16" Cap Screw Bolts (.927" Pin)
[26125716] $283.95
http://www.ws6project.com/user_stor/...olts-927-pin-/
Pistons:
Mahle PowerPak Piston and Ring Kits LS1314898F04
http://www.summitracing.com/parts/ml...make/chevrolet
I got a piston rod chart off of ls1 tech so I have accounted for the extra rod length and searched for a piston with a smaller comp height. Am I over looking anything here?
Bearings: What is recommended for this setup?
Heads:
I am thinking about getting a set of 243's and having them ported.
Any thoughts?
Cam: ???
No idea how large of a cam can I run with 243's and +4.cc pistons? I am looking for a streetable car
I am not wanting ms4 or that choppy of an idle. I want a great streetable cam that will give me good torque and horse power that works with my setup.
Rockers lifters push rods: Not sure can I just run stock for the 243’s?
Ls6 engine valley cover pcv style. ( I know I will have to cut a chunk out of the block for it to fit)
For intake I have a ls1 intake with the 98 fuel injectors and stock throttle body.
The block is a ls1 stock bore was just honed. I am taking the crankshaft to the machine shop later this week due to the engine spun a rod bearing on cylinder 6. So if all checks out I will be using the stock block with stock bore and stock crankshaft.
The rods are bad and one of the pistons has a hot spot on the top of it as if it started to melt.
I am thinking of going the route of new rods new pistons and 243's.
Rods:
LS1 Scat 4340 I-Beam Connecting Rods 6.125" w/ ARP 8740 7/16" Cap Screw Bolts (.927" Pin)
[26125716] $283.95
http://www.ws6project.com/user_stor/...olts-927-pin-/
Pistons:
Mahle PowerPak Piston and Ring Kits LS1314898F04
http://www.summitracing.com/parts/ml...make/chevrolet
I got a piston rod chart off of ls1 tech so I have accounted for the extra rod length and searched for a piston with a smaller comp height. Am I over looking anything here?
Bearings: What is recommended for this setup?
Heads:
I am thinking about getting a set of 243's and having them ported.
Any thoughts?
Cam: ???
No idea how large of a cam can I run with 243's and +4.cc pistons? I am looking for a streetable car
I am not wanting ms4 or that choppy of an idle. I want a great streetable cam that will give me good torque and horse power that works with my setup.
Rockers lifters push rods: Not sure can I just run stock for the 243’s?
Ls6 engine valley cover pcv style. ( I know I will have to cut a chunk out of the block for it to fit)
For intake I have a ls1 intake with the 98 fuel injectors and stock throttle body.
Last edited by E2ndgencamaroN; Sep 27, 2014 at 03:33 PM.
Thread Starter
Teching In
Joined: Jul 2012
Posts: 33
Likes: 0
If I use the 6.100" Connecting rods can I get away from running anything but stock piston comp height?
http://www.ws6project.com/user_stor/...olts-927-pin-/
http://www.ws6project.com/user_stor/...olts-927-pin-/
Last edited by E2ndgencamaroN; Sep 27, 2014 at 03:30 PM.
Ws6Store has always been good to me. Never had a problem.
243's would work just fine. Stock rockers with the trunion upgrade are a great! Hardened pushrods (Length dependent on combustion chamber and lifters used etc..Always measure) LS7 lifters in new trays work just fine, I spin mine to 7000+, they're just fine.
Cam-Martin@Tick Performance would be best for this custom application.
I would try and score an LS6 intake at least.
Good Luck with the build!
243's would work just fine. Stock rockers with the trunion upgrade are a great! Hardened pushrods (Length dependent on combustion chamber and lifters used etc..Always measure) LS7 lifters in new trays work just fine, I spin mine to 7000+, they're just fine.
Cam-Martin@Tick Performance would be best for this custom application.
I would try and score an LS6 intake at least.
Good Luck with the build!
Last edited by FEAR LS; Sep 28, 2014 at 08:07 PM.
Thread Starter
Teching In
Joined: Jul 2012
Posts: 33
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Thanks for the info. With the LS7 lifters what am I gaining there? I was planing on a ls6 intake would stock injectors and throttle body work with that? anyone else want to chime in on my other lower end concern?
I've ordered a ton from WS6Store. They are great to deal with. I even ordered most of the stuff that was going to drop ship from them because the price and shipping was better from them.
As for your other questions - the Mahle are okay. The Scat rods are good for the price.
TEA or AI or PRC for the LS6 heads.
Camshaft - you can get a custom grind from Cam Motion, EPS, Tick, or BTR. Get the heads and cam matched in terms of compression, etc. You want to optimize the setup.
I usually recommend something like a 227/234 LSL/XE lobes or EPS/EPS lobes 111+3 with LS6 heads ported with 6xcc chambers (depending on your piston choice) and Cometic .040s. Ends up around 11:1 with an 8.7:1 DCR. Throw some 1-7/8 TSP Headers and a FAST 92 and you'll have a nice driver that makes 430-440rwhp.
Morel 5315 lifters with LS2 lifter trays would be much better than the LS7 lifters.
I'd do a Katech C5R Chain, Melling Oil Pump, Comp Trunion Upgrade, and Manton 11/32 Pushrods. Throw some PAC 1904s or BTR Platinums on there and you have a good combo.
As for your other questions - the Mahle are okay. The Scat rods are good for the price.
TEA or AI or PRC for the LS6 heads.
Camshaft - you can get a custom grind from Cam Motion, EPS, Tick, or BTR. Get the heads and cam matched in terms of compression, etc. You want to optimize the setup.
I usually recommend something like a 227/234 LSL/XE lobes or EPS/EPS lobes 111+3 with LS6 heads ported with 6xcc chambers (depending on your piston choice) and Cometic .040s. Ends up around 11:1 with an 8.7:1 DCR. Throw some 1-7/8 TSP Headers and a FAST 92 and you'll have a nice driver that makes 430-440rwhp.
Morel 5315 lifters with LS2 lifter trays would be much better than the LS7 lifters.
I'd do a Katech C5R Chain, Melling Oil Pump, Comp Trunion Upgrade, and Manton 11/32 Pushrods. Throw some PAC 1904s or BTR Platinums on there and you have a good combo.
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LS7 lifters are just the OEM replacement for all LS engines, and will be just fine for what your doing. A ls6 intake would be on my list, and stock injectors and throttle body will do just fine for your goals. Mahle makes nice pistons, I've had no problems with mine. I would have your machine shop check the block and give you the size piston to order. I'm on my second set of Clevite H rod and main bearings, with out any problems. I swaped out the first set when I went to a stroker crank, just didn't want to reuse them on a fresh crank. That with a LS2 timing chain and a new oil pump (Melling or ported ls6) you should be good to go.
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Teching In
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I will be talking the block to get the correct piston size that I need to the machine shop tomorrow after work. Whats the plus to going ls2 timing chain? Also does my piston comp[ height and rod length look correct?
Thread Starter
Teching In
Joined: Jul 2012
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Is the Chain dampener required or recommended my ls1 has the holes and is tapped already. Also I have been looking at timing changes and can't really make my mind up ls2 or something else? Im in the same boat with oil pump choice. I really don't want to have fitment issues one do to it can be a pain I read and two im building this engine in my second story apartment so the less trips to the friends house to grind away at the cover the better.
TECH Veteran
Joined: Sep 2014
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From: Mississippi
Another vote for the the C5R chain..I never seen one fail and on lifters I would avoid LS7 lifters. Too many bad stories on those lifters. I attended the LS fest this year and seen some 243 heads Chris Frank put his hands on and man they was hurting a lot of feelings on the track.
Is the Chain dampener required or recommended my ls1 has the holes and is tapped already. Also I have been looking at timing changes and can't really make my mind up ls2 or something else? Im in the same boat with oil pump choice. I really don't want to have fitment issues one do to it can be a pain I read and two im building this engine in my second story apartment so the less trips to the friends house to grind away at the cover the better.
Another vote for the the C5R chain..I never seen one fail and on lifters I would avoid LS7 lifters. Too many bad stories on those lifters. I attended the LS fest this year and seen some 243 heads Chris Frank put his hands on and man they was hurting a lot of feelings on the track.
LS7 lifters as mentioned above are OEM replacements now. Look at all the LS engines running these lifters. I bet all the trouble with these lifters are improper installation.
I run them, and I run them hard (7000rpm+) and haven't had an issue and have installed them in many builds. The OP has many options to choose from.
OP-What are the power goals, intedent use..etc of said build. Is the budget super tight or are you buying top of the line parts here?
TECH Veteran
Joined: Sep 2014
Posts: 4,893
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From: Mississippi
I have seen a LS2 chain fail on a built motor.... I'm not go call no names but one of the best in the business as far as valvetrain stuff and parts told me that the LS2 starts to stretch at 10k miles or so. Hint: a well known cam guy from Kentucky
Thread Starter
Teching In
Joined: Jul 2012
Posts: 33
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This build is a mild rebuild yes but I don't want skimp on parts either. The budget isn't super tight but I don't want to spend more than needed to reach my power goals. Im looking for a great street motor with good torque and longevity. Its going into my 2nd gen camaro and its just going to be a fun cruiser. I am down rods and pistons at the moment due to my stocks are shot. I am having the crankshaft looked at today as well. Rods i choose scat 6.125 and mahle pistons with a comp height of 1.314 is that correct for a ls1?
Heads I am going to run 243's and have some work done to them. I hoping people could chime in to share past experiences and part info as this is my first ls1 build.
Im looking for higher 400hp ball park range on motor no spray and no forced induction.
Heads I am going to run 243's and have some work done to them. I hoping people could chime in to share past experiences and part info as this is my first ls1 build.
Im looking for higher 400hp ball park range on motor no spray and no forced induction.