7.0 427

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10-14-2009, 06:48 PM
CHEVROLADE

7.0 427

do all 7.0 427's have to run the dry sump oiling system?
10-14-2009, 07:27 PM
VMAXDAVE

as far as i know only the ls7 runs a dry sump all the older years from like 66 to 70 something were not
10-14-2009, 07:35 PM
molitor

the only reason the 7.0L's run the dry sump systems, is because they were built primarily for GMs Corvette Racing Division which is mainly autocross racing, and that involves alot of highspeed, long sweeping turns. and unless you have a dry sump system in this situation, you'll suck the pan dry. for a street car, you can use the standard oiling system with no problem, you might want to install an oil restrictor though to give it priority main oiling.
10-14-2009, 07:42 PM
CHEVROLADE

ok thanks so i can go around it then and run the stock oiling setup.
10-14-2009, 09:19 PM
zeake

Quote:

Originally Posted by STUNNA

ok thanks so i can go around it then and run the stock oiling setup.

Absolutely. :greg:
10-14-2009, 09:27 PM
GasGuzzler

Quote:

Originally Posted by VMAXDAVE

as far as i know only the ls7 runs a dry sump all the older years from like 66 to 70 something were not

Yeah, really...and those engines have nothing the do with the design of the newer engine.

GM has already used the LS6 and LS7 option numbers before and they were waaaay different animals (BBC's).
10-16-2009, 03:27 PM
txarkitekt

I thought the dry sump had 2 oil pumps and a longer crank which allowed for the dry sump set up? Not sure how the conversion would work...
10-18-2009, 12:59 AM
Mang213

You cant adapt to a wet sump because of the crank, as far as I know, but people are clever and there may be an adapter/conversion on the market with a different pump and pan
10-18-2009, 06:09 PM
zeake

Just buy an LSX block and be done with it.
Did you know you can change the lifters in an lsx block with out removing the heads.
10-18-2009, 11:00 PM
Mang213

Quote:

Originally Posted by zeake

Just buy an LSX block and be done with it.
Did you know you can change the lifters in an lsx block with out removing the heads.

You can do that in any LS motor, because of the plastic lifter trays. Not just the LSX, which is just an optimized iron block anyways (not a complete engine)
10-19-2009, 12:29 PM
zeake

Quote:

Originally Posted by Mang213

You can do that in any LS motor, because of the plastic lifter trays. Not just the LSX, which is just an optimized iron block anyways (not a complete engine)

Are you sure? I have never removed the valley cover so I would really not know, it was just something I saw on PT.net
10-19-2009, 07:21 PM
GasGuzzler

Quote:

Originally Posted by Mang213

You can do that in any LS motor, because of the plastic lifter trays. Not just the LSX, which is just an optimized iron block anyways (not a complete engine)

Nope...you can swap cams and leave the lifters in but the heads come off the swap lifters.
10-19-2009, 08:09 PM
Mang213

Quote:

Originally Posted by GasGuzzler

Nope...you can swap cams and leave the lifters in but the heads come off the swap lifters.

Duh to me, my bad. Nathan is absolutely correct, I was a bit hasty in my response. I saw 'lifters' and then just went runnin for it :rofl:
10-19-2009, 11:54 PM
txarkitekt

Quote:

Originally Posted by GasGuzzler

Nope...you can swap cams and leave the lifters in but the heads come off the swap lifters.

ACTUALLY...you CAN replace the lifters without taking the heads off. How? Take the cam out, put a piece of cardboard or other firm media to act as a cradle in the cam journals of the block and with a magnet, pull the lifters down. They will be caught by the cardboard when they fall if they come off the magnet. You can replace them the same way you take them out.

It would be HIGHLY difficult, but it can be done. I would never recommend it.
10-20-2009, 09:32 PM
Mang213

That sounds like a disaster waiting to happen, but I see your point.