ls3 stock parts upgrade
11-03-2013, 10:20 PM
#1
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ls3 stock parts upgrade i just bought a ls3 bare block and this will be my third time building a engine other 2 when I was in school along time ago. My goal is just to get my feet wet and understand how its done and install it in my car a 1964 impala . I have been looking in here for information but iam not finding what iam looking for instead iam more confuse I see guys wanting 1000hp
engines but I just want a street car with some power when I need it
this is what I was thinking of doing base on the info found on this site
-------------------------------------------------------------
forged crank Callies stock 24 Reluctor or 58 not sure what to pick
forged pistons Callies stock
FAST LSXR 102mm LS3 Intake Manifold not to sure on this
that is the easy part lol
---------------------------------------------------------------
camshaft
cylinder heads
I have no idea what to pick any help.
as long as I stick to stock like parts made of better material I wont need to have the block machined correct
engines but I just want a street car with some power when I need it
this is what I was thinking of doing base on the info found on this site
-------------------------------------------------------------
forged crank Callies stock 24 Reluctor or 58 not sure what to pick
forged pistons Callies stock
FAST LSXR 102mm LS3 Intake Manifold not to sure on this
that is the easy part lol
---------------------------------------------------------------
camshaft
cylinder heads
I have no idea what to pick any help.
as long as I stick to stock like parts made of better material I wont need to have the block machined correct
11-04-2013, 12:56 AM
#4
The bare block uses whatever reluctor you want to put in there. That's dictated by the crankshaft and ECM you want to run. It might be easier to go 24X with everything and just buy harness extension for the knock and camshaft position sensors. Everything else on the ECMs will work. If you want to run something other than a manual or 4-speed automatic (4L80, 4L60, 700R4) or 3-speed (TH400 or TH350), you'd need a 58X compatible ECM to drive the 6L80 auto trans.
As far as heads. If you have an LS3 block, I'd just do cathedral port heads for overall power and ease of camming properly. PRC 247s or TFS 245s will make the best power under the curve to get the Impala moving. If you do that, I'd buy the FAST 102 for the TRUCKS. The truck manifold makes a lot more power than the car manifolds.
If you decide to do LS3 heads, I'd look at either AI Ported LS3s or TFS aftermarket LS3 heads. And I'd run the stock LS3 manifold but have it port-matched to the heads. The FAST 102 LS3 isn't worth anything, surprisingly.
Also, you will need to get the block honed if you go with aftermarket pistons.
As far as heads. If you have an LS3 block, I'd just do cathedral port heads for overall power and ease of camming properly. PRC 247s or TFS 245s will make the best power under the curve to get the Impala moving. If you do that, I'd buy the FAST 102 for the TRUCKS. The truck manifold makes a lot more power than the car manifolds.
If you decide to do LS3 heads, I'd look at either AI Ported LS3s or TFS aftermarket LS3 heads. And I'd run the stock LS3 manifold but have it port-matched to the heads. The FAST 102 LS3 isn't worth anything, surprisingly.
Also, you will need to get the block honed if you go with aftermarket pistons.
Last edited by JakeFusion; 11-04-2013 at 01:09 AM.
11-04-2013, 01:34 AM
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THANKS ALOT for the info on the reluctor you just save me a lot time of screeching for information on that reading my auto school notes and a book somebody uploaded here going with 4L60 tranny for now
will post pictures when my block gets here for all the guys who like to see pictures
will post pictures when my block gets here for all the guys who like to see pictures
11-04-2013, 01:41 AM
#6
Then yeah, just go with the 24X and get the Gen IV front cover and valley pan and run the extensions off the LS1 harness for the knock and cam position. Everything else would be good to go.
Also, I'd run the truck FAST 102 if I could, but can't. It won't fit but has much better designed runners. The cowl on the F-Body and clearance on the Vette are why the FAST is designed the way it is. The trucks don't have the same packaging concerns, so it's designed with no constraints. I'd look at that first.
You could also do a Super Victor with a 4150 TB. Cammed right, it makes a ton of power too.
Also, I'd run the truck FAST 102 if I could, but can't. It won't fit but has much better designed runners. The cowl on the F-Body and clearance on the Vette are why the FAST is designed the way it is. The trucks don't have the same packaging concerns, so it's designed with no constraints. I'd look at that first.
You could also do a Super Victor with a 4150 TB. Cammed right, it makes a ton of power too.
Last edited by JakeFusion; 11-04-2013 at 02:06 AM.
11-04-2013, 01:51 AM
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get a set of 823 ls3 heads and port them should flow over 330 cfm all day long probly over 350 cfm, cam go with something like a 24x/25x or for a more agressive try 250/260 keep the lsa 113-115
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11-04-2013, 01:52 AM
#8
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a 4l60 will eat up a boat load of power the wrong way as in it slips a th 350 or 400 will eat power but you get much better power transfer, so it eats power the right way
11-04-2013, 02:10 AM
#9
A TH350, 700R4, and 4L60 are all essentially the same transmission with 700R4 and 4L60 being overdrive transmissions.
If you're going to drive it on the street, get the overdrive transmission. Then you can run steeper gears and have plenty of performance without cruising on the highway at 4000 RPM.
The only transmission that doesn't eat a lot of power is a 6-speed. Going to a 9" or S60 rearend will eat power. As will a TH400 or 4L80 (which is the OD version of the TH400).
And if you're going with an LS3 based topend, I would not go with those above cam specs.
If you're going to drive it on the street, get the overdrive transmission. Then you can run steeper gears and have plenty of performance without cruising on the highway at 4000 RPM.
The only transmission that doesn't eat a lot of power is a 6-speed. Going to a 9" or S60 rearend will eat power. As will a TH400 or 4L80 (which is the OD version of the TH400).
And if you're going with an LS3 based topend, I would not go with those above cam specs.
11-04-2013, 02:12 AM
#10
A TH350, 700R4, and 4L60 are all essentially the same transmission with 700R4 and 4L60 being overdrive transmissions.
If you're going to drive it on the street, get the overdrive transmission. Then you can run steeper gears and have plenty of performance without cruising on the highway at 4000 RPM.
The only transmission that doesn't eat a lot of power is a 6-speed. Going to a 9" or S60 rearend will eat power. As will a TH400 or 4L80 (which is the OD version of the TH400).
And if you're going with an LS3 based topend, I would not go with those above cam specs.
If you're going to drive it on the street, get the overdrive transmission. Then you can run steeper gears and have plenty of performance without cruising on the highway at 4000 RPM.
The only transmission that doesn't eat a lot of power is a 6-speed. Going to a 9" or S60 rearend will eat power. As will a TH400 or 4L80 (which is the OD version of the TH400).
And if you're going with an LS3 based topend, I would not go with those above cam specs.
11-04-2013, 02:14 AM
#11
A TH350, 700R4, and 4L60 are all essentially the same transmission with 700R4 and 4L60 being overdrive transmissions.
If you're going to drive it on the street, get the overdrive transmission. Then you can run steeper gears and have plenty of performance without cruising on the highway at 4000 RPM.
The only transmission that doesn't eat a lot of power is a 6-speed. Going to a 9" or S60 rearend will eat power. As will a TH400 or 4L80 (which is the OD version of the TH400).
And if you're going with an LS3 based topend, I would not go with those above cam specs.
If you're going to drive it on the street, get the overdrive transmission. Then you can run steeper gears and have plenty of performance without cruising on the highway at 4000 RPM.
The only transmission that doesn't eat a lot of power is a 6-speed. Going to a 9" or S60 rearend will eat power. As will a TH400 or 4L80 (which is the OD version of the TH400).
And if you're going with an LS3 based topend, I would not go with those above cam specs.
11-04-2013, 04:13 PM
#12
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callies forged compstar crankshaft 3.622", TMS H-beam rods with arp rod bolts
and Diamond pistons -2cc with rings unbalanced
any thoughts about what iam thinking of buying for about 2,300 dollars
good deal or not
and Diamond pistons -2cc with rings unbalanced
any thoughts about what iam thinking of buying for about 2,300 dollars
good deal or not
Last edited by solo20; 11-04-2013 at 05:30 PM.
11-04-2013, 06:21 PM
#13
Don't waste your money on a FAST LS3 intake. The gains aren't really there for the money spent. LS7 FAST is a different story, as are the cathedral intakes. But the LS3 intake is great right out of the box.
Peakspeed ports them as well if you want to go that direction.
Peakspeed ports them as well if you want to go that direction.
11-05-2013, 06:13 AM
#14
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Forged crank seems kind of overkill for street power.
I went with wiseco's and compstar rods for my LS3. Custom cam and the GM CNC LS3 heads.
And +1 on the OEM intake, works just fine.
I went with wiseco's and compstar rods for my LS3. Custom cam and the GM CNC LS3 heads.
And +1 on the OEM intake, works just fine.
11-05-2013, 06:56 AM
#15
Solo20, welcome to LS1tech! SEARCH will be your best friend around here.
I would suggest you contact the good folks at EFI Connections, they can guide you to the fuel injection system as well as a proper wiring harness for your application.
I would suggest you contact the good folks at EFI Connections, they can guide you to the fuel injection system as well as a proper wiring harness for your application.
11-05-2013, 07:55 AM
#16
If you're going to buy a forged crank, at least use a longer stroke. You'll essentially get the extra cubes for free. I don't know about the "TMS" connecting rods, but the Callies Compstar rods don't require any extra clearancing of the block, at least not with a 4" stroke crank.
11-12-2013, 10:22 AM
#17
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engine just got here still not sure what to do with it. when I get a part list I will post it up so you guys can give me some advice.
how to take a screen shot
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11-12-2013, 10:33 AM
#18
engine just got here still not sure what to do with it. when I get a part list I will post it up so you guys can give me some advice.
how to take a screen shot
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Nothing beats getting a new engine
07-21-2014, 01:16 PM
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going with GM CNC LS3 heads stock crank with 4l65e automatic transmission
looking at these cams any thoughts you guys recommend something else?
230/234 .612/.598 114 LSA
or
230/236 .610"/.612" - 115 LSA
looking at these cams any thoughts you guys recommend something else?
230/234 .612/.598 114 LSA
or
230/236 .610"/.612" - 115 LSA
07-21-2014, 05:38 PM
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I talk to spinmaster and pretty much his cam is for none CNC heads
that camshaft 230/234 .612/.598 114 LSA is out any other input
out there that will work best with gm cnc heads also talk to crane cams rep and they recommend
•Lift: 551/551
•Dur@.050: 222/228
•LSA: 115
and with good tuning I would get around 75hp the rep claim
any thoughts
that camshaft 230/234 .612/.598 114 LSA is out any other input
out there that will work best with gm cnc heads also talk to crane cams rep and they recommend
•Lift: 551/551
•Dur@.050: 222/228
•LSA: 115
and with good tuning I would get around 75hp the rep claim
any thoughts
