LS2 drysump question

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Nov 13, 2014 | 12:13 PM

AzMotorhead

Thread Starter

Limping across the line

Joined: Oct 2002

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From: Peoria Az

LS2 drysump question

WHen you convert the LS2 motor to a LS7-9 drysump system what do you do with the dipstick hole in the block?
Is there a freeze plug that will press into the hole in the block ? Or do I have to keep the tube and dipstick?
If there is a plug anyone know the size?
I'm at work and cant just go measure the hole

Nov 13, 2014 | 01:27 PM

el es tu

Safety Car

Joined: May 2011

Posts: 3,582

Likes: 46

From: va

I dont think you can convert to the ls7 one because of the special crank thats used for the system. That said ARE and Aviaid make drysump systems for these cars. Aviaid sells one called the LSA which was something like 1800bucks iirc. Its also the only one Ive heard of that doesnt require removing the ac.

Ill see if I can pull up the link...

EDIT:

Wow the price jumped significantly since I last checked it out - $2800

http://www.xplosiveperformance.com/D...-A_p_3090.html

Quote:

Originally Posted by Xplosive Performance

“A” Scavenge Only Pump Dry Sump System — Cylinder Head Mount

Designed for street use and mild competition. Uses OEM pump for pressure. Retains use of factory air conditioning and other accessories.
Includes:
Aviaid 2-section dry sump pump (scavenge only) with Gilmer drive gear
Bracket mounting pump to cylinder head
Oil pan (choice of 2)
Modified LS2 cast pan
ARE cast aluminum pan
Sump tanks (choice of 3)
OEM Corvette Z06 (optional internal baffle)
6" diameter round (8 or 10-quart system capacity)
9" diameter round (12 quart system capacity)
Sump tank vent, heater and sight tube (optional)
Serpentine/Gilmer drive pulley (replaces OEM serpentine idler pulley)All necessary lines and fittings (optional)
Features/Benefits:
Retains factory air conditioning
Eliminates oil starvation in hard cornering and high
RPM operation
Cooler operating temperatures
Larger lubrication system capacity
Eliminates parasitic horsepower loss through excessive windage
Provides more usable power

Last edited by el es tu; Nov 13, 2014 at 01:41 PM.

Nov 13, 2014 | 02:33 PM

AzMotorhead

Thread Starter

Limping across the line

Joined: Oct 2002

Posts: 5,299

Likes: 109

From: Peoria Az

Here's what was done.
LS2 block and heads
LS7 style crank(long snout)
LS7 Oil pump
LS7 Front cover
C6R timing chain
LS7 Oil pan

Now how do you block off the dipstick tube???

Nov 13, 2014 | 02:36 PM

el es tu

Safety Car

Joined: May 2011

Posts: 3,582

Likes: 46

From: va

Found this:

Quote:

Originally Posted by PUMBA

You will need to remove your oil dip stick housing, tap the hole, and install a pipe plug. You will check you oil level on your dry sump tank. The dip stick would be a leak as the dry sump scavenge pump tries to create a vacuum in your oil pan.

Talk you your dry-sump system supplier and see if there are other preparation items that they recommend.

Good luck.

http://ls1tech.com/forums/newreply.p...ply&p=16301124

Nov 13, 2014 | 02:51 PM

timd38

Race Director

Joined: Aug 2005

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From: Hudson WI

NCM Sinkhole Donor

Memory is bad, but I think a 9/16" tap is what you need.

Nov 14, 2014 | 09:44 AM

timd38

Race Director

Joined: Aug 2005

Posts: 13,592

Likes: 187

From: Hudson WI

NCM Sinkhole Donor

Has anyone installed one of these systems?

http://www.xplosiveperformance.com/D...-A_p_3090.html

He did say the the instructions were universal in the email, but the instructions don't match the parts that are shown.........

Nov 18, 2014 | 09:56 PM

KENS80V

Melting Slicks

Joined: Aug 2004

Posts: 2,928

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From: Oakbank Manitoba

My LSA block was converted to a dry sump. ERL installed a frost plug in the dipstick hole.

The benefit to using a frost plug is the fact you can always punch it out and re use a dip stick if the block is ever converted back to wet sump in the future.

Last edited by KENS80V; Nov 18, 2014 at 10:01 PM.

Nov 19, 2014 | 08:37 PM

KENS80V

Melting Slicks

Joined: Aug 2004

Posts: 2,928

Likes: 229

From: Oakbank Manitoba

I just measured my dipstick tube hole in the block. A 3/8" drill bit fit perfectly in the hole. I'd say it would be a safe bet that it's a 3/8" frost plug. There are no other sizes that are even close. Keep in mind that this is a LSA block. It's similar to other LS blocks. The main differences are the piston oil squirters.

Just a heads up. There is no such thing as a 9/16" pipe tap. Even if there was it's way too big. The hole is 3/8" so a 1/4" pipe tap would be the appropriate size. The hole would need to be drilled out with a 7/16" drill bit. Please keep in mind that these measurements were taken from a LSA block.

Last edited by KENS80V; Nov 19, 2014 at 08:46 PM.