jQuery not supported.



Aluminum vs. Cast Iron

engine life.

Aluminum vs. Cast Iron

Postby swervin36 [OP] » Sep 28 2010, 1:19am

I just bought a 2010 CrewCab with an aluminum 5.3. Just wondering what the service life of the engine is vs. a cast iron block. I know it has a lot to do with how the engine is maintained. With all things being equal can I expect the same service out of the the new truck as I got from my 05 AVY? 141000k no leaks and no oil usage.
Original Poster
swervin36
Armed Forces
Armed Forces
Combustion on 1 piston [L2]
Combustion on 1 piston [L2]
Posts: 102
Topics: 17
Joined: Sep 17 2010, 2:37pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: CO by way of Bama
Year: 2013
Make/Model: Chevrolet Silverado
Extra Info: 5.3L V8 CrewCab
Group Membership:
Registered users
Servicemen

Re: Aluminum vs. Cast Iron

Postby Mando454 » Sep 30 2010, 4:36am

Wow I didnt know they made 5.3 in aluminum I dont really know if it would cause more leaks unless u go with aftermarket heads or other iron components on the engine.aluminum heads on an iron block will often cause leaks since they dont' expand/contract at the same rate.but aluminum is actually less prone to heat damage becuase it doesn't retain all the heat as iron does. Another plus is if you develop a crack, the aluminum heads can be welded, albeit carefully. The cast iron heads, no way.But Gasket have come along way to compensate for the the different expansion rates.
Live Fast Die Young
User avatar
Mando454
Combustion on 1 piston [L2]
Combustion on 1 piston [L2]
Posts: 101
Topics: 6
Images: 5
Joined: Jul 24 2010, 6:10am
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: So Cal
Year: 2008
Make/Model: Chevrolet Silverado
Extra Info: Reg Cab
Group Membership:
How-to Authors
Registered users

Re: Aluminum vs. Cast Iron

Postby lzn197 » Sep 30 2010, 4:16pm

Yes you will get the same life. Don't worry. Keep the engine oil, coolant and filters maintained and you will be fine.
Gordon
2004 Chevrolet Silverado Extended Cab Z71
Semi-retired Master Mechanic
User avatar
lzn197
ASE Certified
ASE Certified
4x4 High Mode [L3]
4x4 High Mode [L3]
Posts: 1814
Topics: 6
Images: 22
Joined: Apr 01 2010, 3:45pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Central Michigan
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: K1500 5.3L Z71 EX
Group Membership:
Automotive Technicians
Registered users

Re: Aluminum vs. Cast Iron

Postby adams99z71 » Jan 04 2011, 5:14pm

yeah you wont have any problem getting the same service life out of it so long as you keep up on your maintenance. only difference i imagine would be the rebuilding process. might not be able to bore them out as much, etc. and you can weld cast iron heads/ blocks but there are VERY few places that do it and the cost might out weight the valve of buying new.
nbs99 z71 325ci v8, stock 4wheel disc brakes, no cats, flow master classic 40 series, rhino line, custom fog lights, cb, bully dog tunner, 4:10 locker, airbag load leveling, 205,000miles.
User avatar
adams99z71
Armed Forces
Armed Forces
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 625
Topics: 30
Images: 0
Joined: Nov 27 2010, 6:28am
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: san diego
Year: 1999
Make/Model: Chevrolet Silverado
Extra Info: 325ci Z71 ext cab LS
Group Membership:
Automotive Technicians
Registered users
Servicemen

Re: Aluminum vs. Cast Iron

Postby EKinMN » Jan 04 2011, 11:04pm

Yes, gaskets have come a long way, but I still worry about expansion rates. It does not hurt to warm it up a bit longer on a cold morning, just to minimize the difference.
Image
2010 Sierra All-Terrain. Mods: Range AFM delete, R.C. 2" level, 275/65-18 tires, mudflaps, soft toneau cover, bed mat, side steps, and HIDGuy 35w 5000k HID's
User avatar
EKinMN
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 8152
Topics: 146
Images: 33
Joined: Oct 08 2010, 4:16am
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Oakdale, MN
Year: 2010
Make/Model: GMC Sierra
Extra Info: All Terrain Z71
Group Membership:
How-to Authors
SilveradoSierra Guru
Registered users

Re: Aluminum vs. Cast Iron

Postby tsduke » Jan 05 2011, 12:48am

Even expansion shouldn't be much of an issue because it's aluminum head on aluminum block.

When the new gen GM truck motor comes out in a couple years they will all be aluminum.
User avatar
tsduke
Combustion on 8 pistons [L2]
Combustion on 8 pistons [L2]
Posts: 836
Topics: 54
Images: 3
Joined: Oct 05 2010, 1:26pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Iowa
Year: 2014
Make/Model: GMC Sierra
Extra Info: SLT Crew 5.3l
Group Membership:
Registered users

Re: Aluminum vs. Cast Iron

Postby adams99z71 » Jan 05 2011, 3:09am

also corvettes have been using all aluminum blocks for at least the past 11years now.
nbs99 z71 325ci v8, stock 4wheel disc brakes, no cats, flow master classic 40 series, rhino line, custom fog lights, cb, bully dog tunner, 4:10 locker, airbag load leveling, 205,000miles.
User avatar
adams99z71
Armed Forces
Armed Forces
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 625
Topics: 30
Images: 0
Joined: Nov 27 2010, 6:28am
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: san diego
Year: 1999
Make/Model: Chevrolet Silverado
Extra Info: 325ci Z71 ext cab LS
Group Membership:
Automotive Technicians
Registered users
Servicemen

Re: Aluminum vs. Cast Iron

Postby EKinMN » Jan 05 2011, 3:14am

Sorry...I thought the 5.3 was an aluminum head and a cast iron block. It's all aluminum?
Image
2010 Sierra All-Terrain. Mods: Range AFM delete, R.C. 2" level, 275/65-18 tires, mudflaps, soft toneau cover, bed mat, side steps, and HIDGuy 35w 5000k HID's
User avatar
EKinMN
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 8152
Topics: 146
Images: 33
Joined: Oct 08 2010, 4:16am
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Oakdale, MN
Year: 2010
Make/Model: GMC Sierra
Extra Info: All Terrain Z71
Group Membership:
How-to Authors
SilveradoSierra Guru
Registered users

Re: Aluminum vs. Cast Iron

Postby lzn197 » Jan 05 2011, 2:53pm

The L33 aluminum block 5.3 engines were available on extended cab pickups starting in 2005. It had a few more horsepower too.
Gordon
2004 Chevrolet Silverado Extended Cab Z71
Semi-retired Master Mechanic
User avatar
lzn197
ASE Certified
ASE Certified
4x4 High Mode [L3]
4x4 High Mode [L3]
Posts: 1814
Topics: 6
Images: 22
Joined: Apr 01 2010, 3:45pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Central Michigan
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: K1500 5.3L Z71 EX
Group Membership:
Automotive Technicians
Registered users

Re: Aluminum vs. Cast Iron

Postby Z15 » Jan 05 2011, 3:17pm

RPO LC9 is the aluminum engine in trucks. Chevrolet has been building aluminum engine since the 60's so its nothing new. My 2002 Trans Am WS6 had a all aluminum LS1 5.7L (350) engine that was they same as was used in the Corvette. So every Trans Am and Camaro SS/Z28 from the late 90's to 02 is using an LS1 aluminum engine.

The 1969 ZL-1 all aluminum 427 cubic inch Corvette motor was the most powerful engine that was ever offered in an American built automobile. It was the direct descendant of the L-88 427 engine and the all aluminum Can Am racing engine of the same era. Although factory rated at 430 HP, the actual output was more like 585 HP after tuned headers were installed in place of the restrictive factory exhaust manifolds.


First. Most powerful. Quickest. Only one Chevy combines it all: the 1969 Chevrolet ZL1 Camaro. It went a step beyond the 427 Yenko and even the mighty L88 Corvette, to where few production muscle cars tread.

Never heard of the super-high-performance Camaro ZL1? That may be because Chevy only built 69 copies.

They were basically blank canvasses for the most committed muscle car mavens.
Drawing a bead on NHRA Super Stock drag classes, Chevy performance guru Vince Piggins authorized the factory to fit a batch of '69 Camaros with a version of the 427-cid V-8 used by the all-conquering Can-Am Chaparral. This actually was another of Piggins' Central Office Production Order projects, and like the COPO Chevelles and Camaros being built for '69, the ZL1 was technically a Camaro option package.

ZL1s were equipped the same as other Camaros of the Central Office Production Order ilk.

ZL1s packed a very special 427-cid V-8, but were basic economy-grade
Camaro inside. ZL1s were the product of Chevy's famous
Central Office Production Order (COPO) program.
The cars began as 396-cid/375-bhp Super Sports with the F4l suspension. Engine and SS trim were deleted, and the cars were equipped essentially as other 427 COPO Camaros, with cowl-induction hood, front disc brakes, a choice of heavy-duty four-speeds or Turbo Hydra-matic, and a 4:10.1 Posi in the strongest axle Chevy could muster. But instead of the iron-block and head L72 427, these Camaros got a 427 called the ZL1.

With its aluminum block, the ZL1 engine weighed a mere 500 pounds -- and produced more than 500 horsepower.

The ZL1's all-aluminum 427 was competition-proven in Can-Am racing.
It weighed a mere 500 pounds -- and produced more than 500 bhp.
It was similar in design to the most-potent iteration of the aluminum-head L88, but it was the first production Chevy engine to also have an aluminum block. It shared the L88's 430-bhp factory rating, but actually had over 500 bhp -- making it likely the most powerful engine Chevy ever offered to the public. And it weighed just 500 pounds -- about the same as Chevy's 327-cid V-8.

The Camaro ZL1 was fully street legal, but its head-turning speed came at a high price: $7,200.

The Camaro ZL1 was fully street-legal, but at a price of $7,200,
it was best suited to professional drag racers who could recoup
some of its cost in prize money.
The entire car carried the full 5-year/50,000-mile warranty and was fully street-legal. With the factory's stock dual exhausts and tires, it turned low 13s; headers, slicks, and tuning got it into the 11.6s at 122 mph. Chevy never built a quicker production car.

All this came at a price: $4,160 for the ZL1 engine alone, pushing the car's sticker to a stratospheric $7,200. Chevy needed to build 50 to satisfy the NHRA, and actually built 69. About 20 ZL1s went into organized drag racing, turning low 10s to set several Super Stock records. Well-heeled individuals bought others, but the high price took a toll: At least 12 engines were removed and sold separately, and about 30 unsold cars were returned to Chevy. It took until the early '70s to sell them off.
Mike
Image Dealer

Image
User avatar
Z15
Recognized Supplier
Recognized Supplier
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 2563
Topics: 132
Images: 8
Joined: Jun 02 2010, 7:24pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Hubbell, Michigan
Year: 2012
Make/Model: GMC Sierra
Variant: Denali
Extra Info: AWD 6.2L
Group Membership:
Vendors
Registered users
Servicemen
Next

Return to Engine

 

  • Similar topics
    Replies
    Views
    Last post

Common search terms

same engine bought aluminum since cast iron getting used installed keep exhaust first front tires still stock problem trucks

It is currently Dec 23 2014, 2:33am

  • Sponsor
Login  •  Register
SHOP TALK (Live Chat)
Engine Forum
EngineThis is where all of our engine discussion and conversation takes place. Talk about engine diagnostics, adjustments, modifications, performance and care. Motor tuning and repair to gain horsepower and fuel efficiency.
To create a new topic in Engine, click this button:
Previous topic Next topic
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: Netseer [Crawler] and 7 guests