FAQ  •  Login

Need Help Recreating a Vortec 5300 LM7

<<

lol111jj

User avatar

Naturally Aspirated

Posts: 8

Joined: Mon Jun 18, 2012 9:51 am

Location: South Carolina

Cars: 2003 Chevrolet Tahoe LS
2010 Chevrolet Silverado 1500 LT Z71 4x4
2013 Volkswagen Golf
2003 Honda Civic LX
2004 Honda Civic LX

Post Thu Mar 19, 2015 10:12 am

Need Help Recreating a Vortec 5300 LM7

I decided I wanted to recreate a 2002-06 Vortec LM7 in Automation, but I can't find detailed information on the engine. I know it's a 5.328l V8 with a cast iron block, aluminum heads, a bore of 5.78 in., a stroke of 5.62 in., a compression ratio of 9.5:1, and uses an OHV intake. I can't find any information regarding the rest of the specs. Does anyone know where I can find the other info? It would be of great help.
The dude who likes all cars.... except the Morris Marina
Founder of Maxon Motors
<<

Slim Jim

User avatar

9-Star Beta Tester
9-Star Beta Tester

Posts: 409

Joined: Sun Apr 22, 2012 4:23 pm

Location: New York, USA

Cars: 2006 Honda Accord EX V6 Coupe, 6-speed manual

Post Thu Mar 19, 2015 12:19 pm

Re: Need Help Recreating a Vortec 5300 LM7

GM 5.3 specs

Good luck
<<

lol111jj

User avatar

Naturally Aspirated

Posts: 8

Joined: Mon Jun 18, 2012 9:51 am

Location: South Carolina

Cars: 2003 Chevrolet Tahoe LS
2010 Chevrolet Silverado 1500 LT Z71 4x4
2013 Volkswagen Golf
2003 Honda Civic LX
2004 Honda Civic LX

Post Thu Mar 19, 2015 1:07 pm

Re: Need Help Recreating a Vortec 5300 LM7

I wanted to do a regular LM7, but I think I would rather do this one instead. Thanks! :D
The dude who likes all cars.... except the Morris Marina
Founder of Maxon Motors
<<

07CobaltGirl

User avatar

Queen of Track Building

Posts: 1613

Joined: Sun Dec 08, 2013 11:47 am

Location: Atlanta, GA, USA

Cars: Chevy Cobalt

Post Thu Mar 19, 2015 1:08 pm

Re: Need Help Recreating a Vortec 5300 LM7

The previous link is an aftermarket crate motor.

Here are the specs for the 2006 LM7 motor as used in the Chevy Tahoe.
<<

lol111jj

User avatar

Naturally Aspirated

Posts: 8

Joined: Mon Jun 18, 2012 9:51 am

Location: South Carolina

Cars: 2003 Chevrolet Tahoe LS
2010 Chevrolet Silverado 1500 LT Z71 4x4
2013 Volkswagen Golf
2003 Honda Civic LX
2004 Honda Civic LX

Post Thu Mar 19, 2015 1:28 pm

Re: Need Help Recreating a Vortec 5300 LM7

Update: I have the majority of the details worked out, but I'm still trying to get the power and torque to the right numbers. After I get that sorted out, it will be ready for release. :)
The dude who likes all cars.... except the Morris Marina
Founder of Maxon Motors
<<

Slim Jim

User avatar

9-Star Beta Tester
9-Star Beta Tester

Posts: 409

Joined: Sun Apr 22, 2012 4:23 pm

Location: New York, USA

Cars: 2006 Honda Accord EX V6 Coupe, 6-speed manual

Post Thu Mar 19, 2015 1:36 pm

Re: Need Help Recreating a Vortec 5300 LM7

@07CobaltGirl: True - but the automobile catalog specs are not "complete" - in my opinion. The crate motor site listed the bottom end materials (cast iron crank, hypereutectic pistons) so I figured it would be more helpful as a starting point. It even has the factory horsepower and torque specs listed in the description.

@lol101jj: To get the "right numbers" try playing with the cylinder head quality - and keep adjusting fuel, timing, and other things until you get it right. If the difference in horsepower rpm and torque rpm are too far apart, reduced or negative head quality (and increasing the cam profile) will bring the peaks closer together.
<<

lol111jj

User avatar

Naturally Aspirated

Posts: 8

Joined: Mon Jun 18, 2012 9:51 am

Location: South Carolina

Cars: 2003 Chevrolet Tahoe LS
2010 Chevrolet Silverado 1500 LT Z71 4x4
2013 Volkswagen Golf
2003 Honda Civic LX
2004 Honda Civic LX

Post Thu Mar 19, 2015 1:53 pm

Re: Need Help Recreating a Vortec 5300 LM7

I think the engine is ready for release. The HP number is 10 off, but the engine is lighter than the actual LM7, so I think the effect is negligible. The pistons, conrods, crankshaft, heads, and block are the correct material. The Compression ratio is correct. And the exhaust is a single-exit system, like in the Tahoe/Suburban/Yukon/Yukon XL.
The dude who likes all cars.... except the Morris Marina
Founder of Maxon Motors
<<

lol111jj

User avatar

Naturally Aspirated

Posts: 8

Joined: Mon Jun 18, 2012 9:51 am

Location: South Carolina

Cars: 2003 Chevrolet Tahoe LS
2010 Chevrolet Silverado 1500 LT Z71 4x4
2013 Volkswagen Golf
2003 Honda Civic LX
2004 Honda Civic LX

Post Thu Mar 19, 2015 2:22 pm

Re: Need Help Recreating a Vortec 5300 LM7

Engine released! you can find the thread here http://automationgame.com/phpBB3/viewtopic.php?f=34&t=5917 if you haven't already found it.
The dude who likes all cars.... except the Morris Marina
Founder of Maxon Motors

Return to Engine Sharing Forum

Who is online

Users browsing this forum: No registered users and 0 guests