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08-03-2010, 01:22 PM | #1 |
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Join Date: Nov 2007
Location: Bay Area, Ca
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New 418 coming together.
Well I started working on the 347ci LS1 replacement. Not that there is anything wrong with it, it makes awesome power (449rwhp NA) and I know there was a tenth or two left NA, not to mention actually spraying it with the 300 hit it was set up for. But, I got an offer on my other LS1 that had been sitting in my 73 Camaro chasis for 4 years. They are almost the same motor minus the piston (Camaro motor was low compression for a turbo application). Since the Camaro still needs the firewall finished and is going to be a while before I can really do anything with it, Figured I'd build a new shortblock for the truck and stuff this one in the Camaro for now.
Here are the details: LS3 block out to 4.082 Callies 4.0" crank Callies 6.125 rods Wiseco -4cc pistons (rings gaped to .027/.029) Hyd 245/260 .643/.629 (was going to go in the 347, still might change it later) CTS-V lifters LS2 timing set .045 Cometic Gaskets 72cc chamber AFR225's that I had sitting on the turbo motor Super Victor intake NX 2 stage plate system Dominator TB Hoping to go 10.60-10.70 on motor and things are left loose enough for a total of a 500hp N20 hit if I am ever brave enough to hit it with all of it. Most likely it will get run on a 250-300. I'll post pics as I put it together. Should be starting on it in the next couple nights (picking the block up today).
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
08-03-2010, 09:24 PM | #2 |
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Re: New 418 coming together.
All i can say is WOW.......
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82 c10 5.3/4l60 84 c20 5.3/sm465 85 chevy k10 suburban LQ4/4l60 91 chevy c10 suburban Lsa 5.3/4l60 2017 Silverado whipple 5.3 1964 Vw beetle 1974 vw beetle |
08-03-2010, 11:03 PM | #3 |
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Join Date: Feb 2007
Location: McKinney,Texas
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Re: New 418 coming together.
Nice setup. You know the drill....lots of pics!
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
08-04-2010, 03:41 AM | #4 |
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Re: New 418 coming together.
Ok, got the block back from machine shop number 2 today. When the block first came in, the bores were set to tight. I had to take it to another machine shop to have them fix it. They are now set up .005 for every hole. Even the pistons had some variance with them 4.0765-4.0770. Sure it's not much and maybe I'm being overly anal, but hey, I'm glad I did ask the block to come unassembled. Good thing I did, the bore wasn't the only issue. Rings were not perfectly gapped either. They were gapped for a NA set up when the original shop was advised this would see a pretty big hit of N20. They were at .018 top and .022 bottom. Wiseco advised they should be at .026 - .027 for the top and .028 - .030 bottom. I resized all the rings tonight (just got done).
The AFR heads also needed a little massaging on the entry for the ports. The Super Victor has a rather large runner which yeilds a slight lip on the transition to the head. I started working on that last night. The material is removed just need to clean up the rough sanding job with a higher grit on the dremel (Didn't have 120+ rolls last night). Here are some pics.
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 08-04-2010 at 03:43 AM. |
08-05-2010, 03:52 AM | #5 |
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Re: New 418 coming together.
Ok.. Got a little more done tonight.. I did not take a picture after I put the ARP main and head studs in, but you get the point. Tomorrow and friday night I can't work on it, but Sat I'm hoping to torque the mains, rods, set the cam in it with timing set. At that point I need to pull the 347 and steal the lifters out of it as well as the oil pump and windage tray. I'm hoping no more than 2 weeks to have this bad boy turn key and on the dyno..
Oh yeah, can't forget the helper..
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
08-05-2010, 09:53 AM | #6 |
Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: New 418 coming together.
great theft deterrent!
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
08-05-2010, 10:02 AM | #7 |
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Re: New 418 coming together.
Do you sit on the couch when you work? I'm kinda jealous.
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08-05-2010, 03:22 PM | #8 |
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Re: New 418 coming together.
No if I sat on the couch my wife would pick the motor up and through it out the window and I'd be sleeping where the dog was.. But nice thought though..
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
08-06-2010, 08:53 PM | #9 |
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Join Date: Dec 2008
Location: port charlotte,florida
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Re: New 418 coming together.
Man,that Callies stuff is gorgeous you could really hang it as wall art!Somethings not right about covering it up w/ the pan
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08-06-2010, 09:28 PM | #10 |
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Re: New 418 coming together.
Looking good. The dyno sheet will reward you for the extra time and care spend making everything just right.
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
08-08-2010, 03:41 AM | #11 |
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Re: New 418 coming together.
Didn't take any new pics as it would look almost the same, but, torqued the rods and mains tonight. Slid the cam in and put the timing chain on. Then I spent 2 hours playing with the cam figuring things out with a degree wheel.
The cam I am going to be running uses solid roler lobe profiles but I am going to be running a hyd roller lifter with it. What took time was actually seeing where the .006 numbers were. While I was at it, I double checked .050 and .200 as well as intake centerline and exhaust centerline. This is going to determine true intake/exhaust valve opening and closing point since comp measures that at .020 for a solid roller cam. The reason they do this is they assume you will have .020 lash set up in it and the valve won't start or stop moving till it hits that point. Since a hyd lifter does not have lash set in to it, I need the .006 number to determine dynamic compression. This cam would be best if the heads were milled to 65cc's but I plan on using them on a different motor some point in my life. So I will have to live with the 8.06 dynamic compression I am getting with this set up. This build sort of presented it self out of the blue and I am trying not to spend a ton of money (sold some parts ect which funded the shortblock..) I might at some point just decide this is a race motor not a pump gas motor (which it is at 8.06 dcr) and stick some 62 cc heads with .035 gaskets on it. That'll move things to race gas only at 9.24 dcr, or 10.32 dcr with a solid roller and lash at .020.. The next phase is to actually pull the motor out of the truck, get the heads off it for the lifters (wish GM would have left that like the Gen 1 motors) and rob that motor of the oil pump, pick up tube and a couple covers.
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 08-08-2010 at 01:51 PM. |
09-11-2010, 01:51 AM | #12 |
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Re: New 418 coming together.
Sorry for the bad cell pics, but hey, that's what I had on me. Old is out, new is 95% done, will probaly be going in next week..
I know, you can tell the old jealous motor as it sits on a tire..
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 09-11-2010 at 01:52 AM. |
09-13-2010, 12:34 PM | #13 |
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Re: New 418 coming together.
Lookin good!!
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09-18-2010, 01:58 PM | #14 |
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Re: New 418 coming together.
Very excited.. Should be turning the key today (well I did that a bunch yesterday with plugs out, coils and injectors disconnected to get oil pressure).. Only things I need to do it put bolts in the verter, put the crank pulley on and hook up the injectors/coil packs.
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
09-18-2010, 10:37 PM | #15 |
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Re: New 418 coming together.
She runs: http://73-ls1.com/63truck/fire_up_exsmall.wmv
I thought more cube were suposed to tame cam shafts down?? Well it's not the exact same cam but sort of close in size: Old cam in the 347 = 243/250 New cam in the 418 = 245/260 Oh wait, the valve events are way different
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 09-18-2010 at 10:37 PM. |
09-19-2010, 12:52 PM | #16 |
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Location: port charlotte,florida
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Re: New 418 coming together.
Sounds RANK! amazing that it idles that low,gotta luv efi. We need a first pass vid!
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09-19-2010, 12:58 PM | #17 |
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Re: New 418 coming together.
It might not sound like it but it's actually idling around 900-1000rpm. But it sure is chunky..
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
09-19-2010, 01:15 PM | #18 |
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Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: New 418 coming together.
thats what I was guessing and was going to ask about...
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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