Mr_president

iTrader: (38)

I was surfing the net and came across this!! has anyone ever used one of these products?

www.dmperformance.org

Mssingkid

iTrader: (7)

I believe these have been around for quite a bit now. If i was planning to build a new motor, i'd get one. Cheap insurance, and since the motor is apart why not. Rumors are that GM created one to be installed @ the factory, but it never made it to the production motors.

NoMoreFWD

iTrader: (1)

Waste of money.

2000Hawk

iTrader: (5)

I would get it to if i had my whole motor apart, or if i was building another LSx motor
-Joel

Mr_president

iTrader: (38)

and why do you think this?

ChucksZ06

iTrader: (9)

Why do you want it...block is plenty stiff...you are just adding iron to the car.

NoMoreFWD

iTrader: (1)

The main caps on the LS motors are recessed into the block. The caps have 4 bolts holding the cap down and 2 more bolts cross tied to the sides of the block. This is a very good design. I don't see much chance of the mains moving around. Someone from W2W posted about no need for a girdle under 1200 hp. If I was running an old 2 bolt main block I would consider a girdle, but just don't see it being advantageous with the LS motor.

pist0lpete

iTrader: (3)

I think there has been one full confirmed block failue on a LS1 and I believe it was fro W2W in a 1200+ horsepower application. You should be much more worried about sending a pison through the block then the block actually failing. Waste of money.

Phil99vette

iTrader: (11)

Thats an interesting fact about w2w, didn't they post some pics of a motor that showed some severe signs of the main caps moving around. I think it may have been mike brown's motor but I am probably wrong.

NoMoreFWD

iTrader: (1)

Phil, I didn't see that one. That would be quite ironic. Still, I don't think main cap failures or problems are a regular occurrence.

Cop Car

iTrader: (14)

i dont see it doing much.. if the main bearings do move around, putting a piece of metal inbetween them and their bolts would be a bad idea, and it would just make all of them move instead of one. the 5th and 6th main bolts on the sides i think do a great job of stablizing the mains. but then again ive never had a 1000+ hp motor, and im not an engineer. the engineers at GM decided it wasnt nesscary.. it would be interesting to see if Katech uses one on their race motors

427

iTrader: (3)

We have used girdles on some of our high hp boosted engines. They tie in the oilpan rail with the caps, unlike the dsm unit which ties just the caps together. I would venture to say most engines do not need this added unless they are pushing extreme power limits of the factory block. The newer aftermarket blocks should have the added strength to make the girdle obselete.


Kurt

NoMoreFWD

iTrader: (1)

Thanks for chiming in. I appreciate the integrity of a builder, that doesn't try to sell unnecessary parts.

DONAIMIAN

iTrader: (18)

Plenty of people have made good power without them, and thoes who do intend to really make big power either got for an iorn block or C5-R anyways.

Phil99vette

iTrader: (11)

For most applications making 400-600hp they are not necessary but for those looking for 1500-1700horsepower it may be something that might be worth it in the long run on an aluminum block. My next build will have one as well as a 96mm turbo but who is counting.
Phil

Tiger2o69

iTrader: (16)

You can see it installed on a car on EPP's website.. They used it in a turbo car..