A machinist , a turbo and his L31 GMC

[Slimpickens]

Just curious how this build is coming. I intend to boost my suburban as well. I too am looking for more of a towing rig with great merging and passing abilities.

 

[Mrich0908]

Sorry for not updating .
Here is a list of parts I used. RCX 6 inch lift , GT45 turbo chager , XS power turbo manifold , 6 inch sfi balancer Summit block .03 over. 383 Scat forged 7/16 Rods n crank . Wiseco 2618 pistons with a 24cc dish for 8:5.1 static compression with low tensions rings. Assault heads w/ .062 copper head gaskets( dart platinum copys) CompCams 2.02 Intake valve 1.6 exhaust valve @.100 longer. .085 chrome molly hardened push rods .100 longer , GM ls9 Beehives valve springs with comp cams retainers and locators , forged .050 locks. pro comp Pro magnum roller rockers , Comp Cams Camshaft 280XFI + 2 degrees advanced , compcams adjustble camshaft , assault single plane MPFI manifold 4150 style with 1inch riser block. Procomps 4150 1200 cfm throttle body 80 lbs siemens deka injectors , pro pro comp fuel rails with boost referenced 1:1 adjustable fuel pressure regulator 355 lph intake pump .Gen 3 ECU , 24 tooth efi connection reluctor wheel gen 3 coils w/ hp tuners , gen 4 5 wire maf mounted in my Bar and plate intercooler. Did some mild at home porting on my heads and intake.
. Lest see. I went with a 4 bolt main summit block 650$ ( was on sale and received 80$ summit bucks) paid anther 100 to have my pistons hone exactly to the cylinder size and had few tenthousandth (.0002) taken off the mains because I upgraded to studs.
Checked everything on the motor blueprinted it and assembled. Alsmost have my 6in RCX lift in . With out it the differential would be huge problems with my cross over pipe.
Motors together Im just welding and fitting exhaust piping stuff like that . Here some picks. But this where im at I just ordered new ball joints and bushings getting ready to paint stuff like that .

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[Mrich0908]

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[Mrich0908]

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[Mrich0908]

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Last picture is Piston to valve clearnce

 

[Mrich0908]

These are the last of em for now. Ill update soon when more is done.

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[TylerZ281500]

lookin good. info on the .050 locks

 

[Mrich0908]

There .05 valve keepers . My install height was 1.8 on my valves in new heads .The bee hives need a retainer and locator. The restrainer is .06 high and takes .06 from my 1.8 installed height . The keepers valve lock has a machined offset .05 to add .05 back to your installed height.

 

[Mrich0908]

Cut and moved rearranged and tiged my oil pan today. Suspension bushings and ball joints came in so I can finish my install of my rcx 6 lift.
Engine will be going in soon for break in with out the turbo.I just have to grab a few things like tranny cooler and 19 in flew fan. Decided to paint it Kawasaki green also.

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[michael hurd]

I would suggest checking the oil pan for leaks with a light solvent before the pan gets installed and the engine dropped in place.