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Post by eidairman1 on Mar 31, 2024 22:38:11 GMT -5
It's been awhile since I've been on any forums (about to drop TPU altogether) anyways enough of that shitty page.
My 2007 Classic Silverado 1500 Extended cab GMT800, not 900, had a catastropic failure in the engine, 4.8 LS Gen 3. It seized up due to no oil pressure. In February I learned I might have had a blown head gasket because when I drained the oil a lot of orange fluid came out,then oil, and yes physics proves water is denser than oil- the orange being GM coolant and water.
I acquired a 'LS1' Iron Block, basically already been through overhaul, it started out as a LM7 5.3, bored out to 3.898" from 3.780" so 0.118" increase. The crank between the LS1 and the LM7 are the same at 3.622". It has Icon Forged flat top pistons which the lm7 had dished pistons, 799/243 heads which are better than the OG LS1 heads, LS2 style timing chain, Melling HP oil pump with 80 psi spring installed from factory. Other parts are from BTR-rockers with Michigan Motorsports brass bushing trunnions, 7.4" .080" wall thick pushrods, valve springs, ls7 lifters, lifter trays, and Truck Norris cam; ARP head studs, it looks like main cap studs/bolts windage tray studs; Improved Racing Products oil galley barbel/dogbone plug. I provided the Aftermarket rocker stand rails, rockers & bolts, WVE by NGK cam and crank sensors.
It was cheaper than putting my dead 4.8 through an overhauler
Here is the kicker, GM never released an iron block designated with the RPO code of LS1, as it was aluminum, so in a way this engine is fairly unique.
I am trying to close it up so it will be ready for the swap.
So far checked torque on head studs, cam gear, oil pump. My friend modified the oil pickup tube mounting plate slightly and the pickup tube girdle I bought from Amazon so it would clear the t key holding the mounting plate from rotating during install. I replaced the timing cover crank seal and cleaned it better; cleaned the valley cover where knock sensors go, replaced both seals as the guy was going to use the old units, put in delphi knock sensors since he said he bought amazon units. I cleaned my truck oil pan as he had 1 that was an aftermarket to be used in cars, not torqed in yet as I need to prep the rear main cover, it is on a stand so I can't get it off as there are 2 points where the oil pan needs sealant for the front and rear covers. So I still need to put exhaust manifolds on, and the rear 2 spark plugs with wires, 150 PSI oil Switch by AEM, That will be another weekend. Intake and front accessories will be swapped to the 5.7 when the 4.8 is pulled, the injectors for the 4.8-6.0 are the same in performance from 2004+ so it should have no problem with the 5.7L.
I will start to get some images of this engine, yes LS are dime a dozen but it makes for easier swaps, great aftermarket support for an engine series that was last produced in 2016 and was originally released in 1996, replaced by the Gen 5 LT1/4. Also I would have never been able to find another truck for the price I paid in 2016 with less than 80,000 miles on it and I am on the Err about vehicles produced after 2007... Sorry but I dislike the GMT900...
I got the truck then with 75000, and got it up to 188,000. I see them typically doing 350,000+, I just had a 1 off style failure and didn't know it.
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Post by spit051261 on Apr 1, 2024 1:03:53 GMT -5
Sounds like a nice project  A pictorial history would be very nice .
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Post by eidairman1 on May 12, 2024 21:37:57 GMT -5
 These are what I could upload at once... |
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Post by eidairman1 on May 12, 2024 21:49:22 GMT -5
Here are the rest
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Post by spit051261 on May 13, 2024 0:00:03 GMT -5
WOW ! Very nice |
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Post by Mr.Scott on May 13, 2024 10:16:44 GMT -5
There's nothing like a nice fresh build. 😌
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Post by eidairman1 on May 21, 2024 20:30:25 GMT -5
WOW ! Very nice There's nothing like a nice fresh build. 😌 Thank you. I did the quick and dirty buying the shortblock that had already been overhauled. Just filled in the gaps with some pieces from the dead 4.8, just need the accessories off it when the swap is accomplished Since this thing already has a BTR Truck Norris Cam in it, and improved racing products oil galley bypass barbell, I will be selling some parts off I bought to freshen the 4.8 after the 5.7 is running. Reliability upgrade is bushing trunnions instead of caged roller bearings. The Damper on the front to mount it required 240 ft lbs, then 37 ft lbs +140 degrees, a Snap On Breaker Bar handled the degreeing, got it to 150 degrees, max gap is .1750", got it to .1450" I will for sure need to have the pcm (P59 computer) retuned due to the cam and volumetric efficiency change from displacement increase. I will tear the 4.8 down later on and see if the block and heads are ok (doubt the rotating assy is, blown headgasket putting tons of water in the sump) might use the heads with a dual spring (reliability upgrade) |
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Post by eidairman1 on Jun 29, 2024 20:47:53 GMT -5
My Install is Complete Pictures will be on the way, Ironing some bugs out, will explain that in a bit
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Post by eidairman1 on Jul 5, 2024 11:38:00 GMT -5
My Install is Complete Pictures will be on the way, Ironing some bugs out, will explain that in a bit Well Jun 22 2024, Did the swap, had to remove exhaust manifolds to rotate the Iron 5.7 LS1 for clearance, swapped the Circle D HP 300mm 2600-2800 stall in along with the 4l60e front seal and turbine seal. Finished off the intake and a few other things on Sunday. Found out I was not getting spark, so i grabbed the crank trigger from the dead 4.8, got spark, computer was complaining about cam sensor, we had truck started, wouldnt stay running. Following wednesday I came out and swapped the cam sensor from the dead 4.8 in, was able to get it to idle but started hearing lifter tap. Found some negative reviews on "brass bushings" for trunnions from Michigan Motorsports. Past Saturday I pulled valve covers and found 1 rocker bolt on each cylinder bank was loose, either I missed them during torque sequence or they backed out. Driver side was like halfway out and it damaged the rocker tip, the other was like 1/8th out. All pushrods are good, I ordered Factory GM Rockers with stock bearing trunnions and 2 rails since the rails were finally back in stock. Today Im expecting to recieve the rockers.
Here are followup photos.
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Post by zila1 on Jul 7, 2024 12:25:32 GMT -5
Very nice.  |
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Post by ShrimpBrime on Jul 9, 2024 1:14:52 GMT -5
Good stuff.
I've done so much work to these engines through the years.... It's like I dream chevy small block and nothing else lol.
Cant wait to hear it purr. (hoping for a short vid)
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Post by eidairman1 on Jul 9, 2024 22:39:41 GMT -5
Very nice. Thanks Good stuff. I've done so much work to these engines through the years.... It's like I dream chevy small block and nothing else lol. Cant wait to hear it purr. (hoping for a short vid)
Things are delayed due to Beryl rolling through, but I'm eager to get it running. I got GM original rockers to correct the hiccup. And yes man I will give a vid, it will be before the street tune then I will do a followup of the street tune, then a max safe tune after i upgrade to the L59 33lb efi, it has the 25 lb units currently. It was interesting to see it idled with the 4.8's cam sensor, just the pcm needs the tune so the truck will behave correctly with throttle input and shift points.
It still has the stock big muffler so it may not sound much different than a factory truck.
I am very fortunate I found this engine because everything was done right as of the shortblock.
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Post by ShrimpBrime on Jul 9, 2024 22:57:03 GMT -5
Very nice. Thanks Good stuff. I've done so much work to these engines through the years.... It's like I dream chevy small block and nothing else lol. Cant wait to hear it purr. (hoping for a short vid)
Things are delayed due to Beryl rolling through, but I'm eager to get it running. I got GM original rockers to correct the hiccup. And yes man I will give a vid, it will be before the street tune then I will do a followup of the street tune, then a max safe tune after i upgrade to the L59 33lb efi, it has the 25 lb units currently. It was interesting to see it idled with the 4.8's cam sensor, just the pcm needs the tune so the truck will behave correctly with throttle input and shift points.
It still has the stock big muffler so it may not sound much different than a factory truck.
I am very fortunate I found this engine because everything was done right as of the shortblock.
Cam sensor, crank sensor, abs sensor.... they're all the same. Just needs to fit. I enjoy the sleeper sound. Quite, never heard me pass haha. In fact, that's how my 17' Passat is. 1.8L Turbo Fury, I pass a lot of pickup trucks easily at any speed. Stock tune 170hp, no weight reduction. XD (Don't laugh, it's surprisingly quick. DSG dual clutch automatic also stock tune.) Figure 900 bucks go stage 2 and no mods, keep the stock exhaust. Flash TCM for better shift points, but honestly the stock sport mode isn't terrible. Just lacks the HP for them. (SLEEPER MODE!!) A buddy of mine has a 2010 Mustang with a 900HP Whipple super charger. Slapped it on in the garage over the weekend. Flashed and drivable on all stock internals. Crazy shit you can do these days. It's every bit of 900HP too. Loudest damn Mustang I ever heard. HAHA. If he swings by the shop, I'll see if I can get a vid. Or maybe one of the kids got it last time he showed up. I'll ask  |
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Post by eidairman1 on Jul 9, 2024 23:04:45 GMT -5
;)My friend that helped me do the swap has a 468 in an elcamino, also yeah, light car with a turbo vs a heavy truck with a torque tune and not a high rev tune. Anyways this 5.7 will live as a truck only, not a race car. The 4.8 if it didnt kill a water jacket may become a race block, or up to a 6.3L (383). I will say the 4.8 I had was balsy as heck. But this 5.7 is basically a bigger LR4 or L33 due to the true flat tops. Thanks
Things are delayed due to Beryl rolling through, but I'm eager to get it running. I got GM original rockers to correct the hiccup. And yes man I will give a vid, it will be before the street tune then I will do a followup of the street tune, then a max safe tune after i upgrade to the L59 33lb efi, it has the 25 lb units currently. It was interesting to see it idled with the 4.8's cam sensor, just the pcm needs the tune so the truck will behave correctly with throttle input and shift points.
It still has the stock big muffler so it may not sound much different than a factory truck.
I am very fortunate I found this engine because everything was done right as of the shortblock.
Cam sensor, crank sensor, abs sensor.... they're all the same. Just needs to fit. I enjoy the sleeper sound. Quite, never heard me pass haha. In fact, that's how my 17' Passat is. 1.8L Turbo Fury, I pass a lot of pickup trucks easily at any speed. Stock tune 170hp, no weight reduction. XD (Don't laugh, it's surprisingly quick. DSG dual clutch automatic also stock tune.) Figure 900 bucks go stage 2 and no mods, keep the stock exhaust. Flash TCM for better shift points, but honestly the stock sport mode isn't terrible. Just lacks the HP for them. A buddy of mine has a 2010 Mustang with a 900HP Whipple super charger. Slapped it on in the garage over the weekend. Flashed and drivable on all stock internals. Crazy shit you can do these days. It's every bit of 900HP too. Loudest damn Mustang I ever heard. HAHA. If he swings by the shop, I'll see if I can get a vid. Or maybe one of the kids got it last time he showed up. I'll ask |
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Post by eidairman1 on Jul 9, 2024 23:14:02 GMT -5
Oh someone finally got the 10L80/90 working behind a Gen 4 LS Engine and gen 3 will follow soon, looking to do a 6L90 swap with 1 OD gear later along with a locker diff
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Post by ShrimpBrime on Jul 9, 2024 23:32:18 GMT -5
Oh someone finally got the 10L80/90 working behind a Gen 4 LS Engine and gen 3 will follow soon, looking to do a 6L90 swap with 1 OD gear later along with a locker diff Sounds solid man. Gotta have OD with the fkn fuel prices these days. |
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Post by eidairman1 on Jul 10, 2024 11:56:48 GMT -5
Oh someone finally got the 10L80/90 working behind a Gen 4 LS Engine and gen 3 will follow soon, looking to do a 6L90 swap with 1 OD gear later along with a locker diff Sounds solid man. Gotta have OD with the fkn fuel prices these days. Those transmissions have 2, Where the 4L60/4L80 have 1, Im looking to replace 1 od gear with a power gear at some point on a 6l90 |
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Post by eidairman1 on Jul 12, 2024 12:16:47 GMT -5
Well since the Evil Queen Beryl (look it up lol) rolled through Power has been out at my job, so no lights, no lathe, no mill, no blending, painting can be done.
Thursday:
I went 1hr 20 minutes out where my truck is in Magnolia TX and put the GM Rockers in, put blue thread locker on the bolts (few threads) torqued them to 22 Ft Lbs, checked them thrice and wala no more chatter. After Starting with Rough Idle, P0300 showed up, cleared the code and it maintained idle, just after you put gas it responds then when you release it drops below 600, so it needs a tune.
Cam specs are as Follows.
Brian Tooley Racing: Truck Norris
Intake/Exhaust Duration @ .050": 212°/22X°
Lift .552"/.552"
107.5 LSA
GM LS1 4.8/5.3 LR4/LM7
Duration @ .050 in. (int./exh.) 191°/190°
Valve Lift (int./exh.) 0.457 in./0.466 in.
Lobe Separation Angle (1999) 115.5°
Lobe Separation Angle (2000-06) 114°
It is roudier than even the 5.7 and 6.0 Cams.
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Post by eidairman1 on Jul 14, 2024 22:28:13 GMT -5
After Further Research Both the Texas Speed Chopacabra and BTR Truck Norris Cams are roudier than even three 6.2L Cams (L92, L94, L99)
Both of them spec wise sit between the LS3/LS9 models outside of the LSA being Tighter.
No wonder it won't idle after giving it gas and letting off.
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Post by eidairman1 on Jul 17, 2024 22:43:20 GMT -5
Update: Contacted Tuner, will be meeting Him Saturday. After that it's Insurance, Emissions, Tags...
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