View Full Version : LS7 swap??

07-06-08, 01:53 PM
highly considering this once I return from Afghanistan, and I actually found a buyer for my ls6, my question is, how much should I ask for a used ls6 with 33k miles on it? don't have a clue, just don't want to leave anything on the table to help offset the ridiculous cost of the ls7... any ideas???

07-06-08, 01:55 PM
Rob! Long time no see. LS7 swap would be sick, sell me your flywheel!

07-06-08, 03:53 PM
i dont know maybe 4-5k? ebay has some going so u can gauge it
http://motors.shop.ebay.com/Parts-Accessories_Car-Truck-Parts-Accessories__ls6_W0QQ_nkwZls6QQPartType8182f47ZEng inesComponentsbe8eb8dfQQEngineComponentsPartType35 243e15ZCompleteEnginesb14aae8aQQ_catZ6028QQ_flnZ1Q Q_fxdZ1QQ_pcatsZ6000QQ_ssovZ1

07-06-08, 06:15 PM
When you getting back Rob?
Be safe.


07-06-08, 11:32 PM
Isn't the LS-7 a dry sump?

07-07-08, 07:15 AM
Rob, good hearing from you!

A much simpler way is to -- dare I say it? -- bolt on a maggie. Cheaper, easier, reversible, and feels just like you've got big cubes under the hood. Too bad I didn't get a chance to give you a ride at Summit Point. Ask GMBound about his quickie ride. :sneaky:

Stay safe over there. :patriot:

07-07-08, 10:39 AM
better think about getting a custom rear to handle the LS7 tq/hp. Shoot, the LS6 hp/tq is already too much for it.

Just buy an 09V and be done with it.


07-07-08, 01:04 PM
09 rear in a V1 FTW.

I have thought about the LS7 swap but might be a bit too much for me. Sure would love to see somebody do it.

There is no replacement for displacement!

Bolt a maggie on a LS7. :woohoo:

07-07-08, 08:41 PM
I have thought about the LS7 swap but might be a bit too much for me. Sure would love to see somebody do it.


07-14-08, 07:58 AM
Guys, it's actually pretty simple if you stick to wet sump. I'm using my stock oilpan with a slightly modified windage tray (I have a 4.25" stroke) and converting my LS7 based shortblock with a knock sensor and cam sensor harness conversion kit from Lingenfelter. If you have a 2006 or later, you don't even need the conversion harness. This motor is a beast... With 4.135" bores, it displaces 457 CID. I'm putting it in this week, along with a Textralia clutch and will have an update by next Friday.

I sold my LS6 for $3500.

07-14-08, 10:59 AM
What did you do about heads?

07-14-08, 01:05 PM
LS7, best engine ever.

07-14-08, 01:11 PM
I did it last year, using a CTS-V wet sump setup.

The heads, coils, plug wires, intake assembly and block are LS7. The reciprocating assembly is Cola (Katech) crank, Callies rods and Diamond pistons. The cam is an LPE (very very mild) custom grind by Comp Cams, the pushrods are 4130 Manleys and the springs are PRC dual w/Ti retainers.

The clutch is the GM 12570806 package with a Katech slave spacer.

My car was an LS6 so I had to use the 24x reluctor wheel to make it compatible with the car's electronics. Other than that, it was a very straightforward swap, I started on a Friday night at about 6 pm and was driving the car Sunday afternoon (29 1/2 hours total time).

At the same time as the engine swap, a Corsa system and 1 7/8" Jet-Hot Kooks were installed. I also had the rear wheels widened 1", mounted PS2s, installed the factory sway bars and links, and later installed the Spectre cradle bushings and a home made front upper differential bushing.

The entire conversion was about $2300 less than the LPE Package price since I did all of the labor myself.

07-14-08, 01:27 PM
The nice thing about it is I still have my complete LS6 if I want to go back to stock (or put it in a 66 chevy II). :D