2004 Chevy Blazer Ls 2dr. I am putting a 5.3L (L59) from a 03 GMC Yukon drive by wire with 4L60E . So far have parts on order from current performance and Holly just waiting for them to come in so I can start fitting the 5.3 into the Blazer . With the summit racing Pistons Chevy performance head gaskets and 243 heads Mill down to 62 CC my compression will be 10.6.1 CR. Should work well with the 2004 LS6 Corvette camshaft I'm going to be using.





Parts List:
5.3L L59 from 2003 GMC Yukon SLT.

159K Miles on it when pulled.

New GM Performance Camshaft from 2004 LS6 Corvette P/N 12565308.

Gen 3 243 64cc Heads milled down to 62cc.

Chevrolet Performance Head Gaskets -12575329 Compressed Thickness 0.052 in.

Chevrolet performance valve springs P/N 19420455.

Brian Tooley Racing Rocker Arm Trunnion Upgrade Kit BTRTK001NB.

Gen IV Rods P/N 12607475

ARP 134-3609 Performance Series Cylinder Head Bolt Kit.

ARP 134-6006 Connecting Rod Stud Kit.

Current performance Motor mounts &Blazer 2WD transmission crossmember.

GM 302-1 muscle oil pan
GM PERFORMANCE Dipstick Tube P/N 12570787
GM PERFORMANCE Dipstick P/N 12570788

Holly Blackheart exhaust manifold P/N 7122 30 26 HKR.

Holly Blackhart AC evaporator side cover P/N 71223028HKR.

2005 4L60e with TransGo shift kit. HD-GM92 TMBX torque converter

LS1 Camaro / GTO water pump with LS1 Camaro / GTO harmonic balancer. With modified alternator / power steering bracket to line up with GTO harmonic balancer and water pump.

Melling M295HV High Volume Oil Pump with 60 PSI spring.

Melling BD417-DBRKT - Melling Timing Chain Dampener Bracket

Dirty Dingo DD-LS-AC-LM-CMV lower passenger side mount A/C bracket kit with Sanden SD7B10 mini compressor.

Quantum-340lph-direct-drop-in-performance-fuel-pump-assembly for 2dr 2wd Blazer P/N QFS-A822HV.

AEM (30-4110) UEGO Air/Fuel Ratio Gauge

Summit Racing SUM-326943780-2F Forged Pistons + 2cc dome Bore 3.780.

My compression will be 10.6.1 CR.









New vortec cover and retainer for the truck intake since the one from the Yukon was missing.




Suspension

Front

Belltech spindles P/N.2102 and 2/3-in drop springs P/N.23228.

Rear

Belltech 3-in drop leaf springs P/N.5964. with 1-in lowering block with2 Degree Taper P/N 6002.

Sitting on 20x8.5 Vision-Torque with 235/35/R20 tires.

 

For the rear end I decided to go with the Ford 8.8 out of a 05 explorer. Just need to shorten the driver side axle tube & drill the Blazer and lug pattern 5x4.75 in the Ford axles. I did try to find a 8.5 out of a S10 or S15 but after 6 months of wild goose chases and God knows how many miles traveled I'm giving up on that.

 

That should be a fun ride!

 

I finally got around to tearing down my 5.3 main and rod bearings are excellent can't say the same for the camshaft bearings they're all showing copper on the bottom half of the bearing. I know every thread says don't ever look at the cam bearings when you're doing a cam swap but I did. The camshaft is an LQ4 by P/N 12560967 little odd since mine is a L59 5.3L. cylinders look great still see hone marks and lifters and push rods are in excellent shape also. Tomorrow I will call the machine shop and see when I can bring the block in to have new cam bearings pressed in.

 

Went to the machine shop today rough cost is about $250-$300 for new cam bearings + installation and hot tanking the block. I was hoping to get away with not pulling the crankshaft but machine shop wants the crankshaft out to do the cam bearings. so that's why I'm doing the hot tank on the block. And it will be about 3 weeks before they get to it and get it done the guy that does that work is on vacation until next week lucky me. But it's worth the wait to have it done right. I am hoping to use the newer wider cam bearings but they won't know until they size the OEM cam bearings to see which ones will work in there.

 

Okay I got the 5.3 all the way down to Bear block. Tomorrow I will run the ball hone through it. since I'm going to have it hot tanked I have them cleans up my mess from that. If anybody's interested in the third gen press fit rods and pistons I removing from this 5.3. PM me and we can make a deal. they are an excellent shape they only have 159k on them. I already sold the 862 heads I pulled off to my machine shop.

 

Before


After 320g ball hone.

 

Nice! Looking nice and flush!

 

Summit racing Pistons are now together with the Gen 4 rods.

 

Installed my Brian Tooley trunnion upgrade for my rocker arms. Decided to go ahead and do that just in case down the road I go to a bigger cam. they will be no need to worry about my rocker arms failing and throwing little needle bearings into the oil pan.