I have my car apart for the winter getting all the new fun parts installed. I have an old D1 Procharger sitting around here, and have decided to add some boost to the car. I plan to fabricate my own brackets so it will be a passenger side install.

My question is, am I wasting money doing a girdle on the bottom end? the engine is right at 500HP now, and I plan to run about 5-8 lbs of boost, nothing serious. I will be inter-cooled.

Stock 67 block, studded top and bottom, stock caps, ARP-2000 fasteners, K-1 rods. light SRP Pistons, stock stroke. The car runs great!

I have the pan off right now, but I am worried about pulling the current studs to accommodate the ones for the girdle.

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I would add a girdle if your doing a power adder like ,nos,blower or pro charger,anything less I wouldn't,its a band aid but a good band aid

Yes, I would highly recommend it....Cap walk is a big issue, and the stock blocks have been known to crack in the valley....I am at 700hp, and you can see cap transfer metal on the block and caps WITH a girdle....

at those power levels a girdle is cheap insurance. if your pushing 500 without out boost you will most likely be around 750 with boost and that means a lot of cap walk and failed parts. our girdle kit runs $799.00 with aluminum main caps and all the hardware you need.

I used the 3/8 girdle for a couple yrs at 14# with iron heads,stock caps/studs with good results.

Boost is addicting. If 5psi is good, then 10psi must be better right?!

I would just do it now and be done with it. That way when you decide to turn it up later (and you WILL), you won't have to worry about it.

I won't waste my money on any girdle, I would and do replace the main caps with better aluminum or ductile iron units My reasoning is that the Mopar wedge and 426 Hemi blocks have a very strong design with the oil pan rails below the crankshaft centerline with the renforcing ribs from the main caps so the entire bottom end is supporting the main webbing That being said the RB and 361 and 383 main webbings are thinner between the bottom of the cylinders down to the upper main support so reinforcing the main webbing with a girdle bolted to the main studs and oil pan bolt holes does nothing to add support where it is really needed. The girdles do provide some stability front to rear but no real support to the main webbing The 400 blocks have a lot thicker main webbing stock from Mopar so maybe that is a option if you want to really turn up the wick Your best bet to prevent failure on the main webbing and getting a better block is a new 4 bolt main replacement block If you can find one Be safe don't run over your crankshaft

This has been argued to the point of delirium everywhere in the world. I can tell you that you are applying a band aid where you need an amputation. Find an aftermarket block and be done with it. Cheaper in the long run.

True

The Aluminum caps route has seemed to work for my junk over the years. I always thought Girdles were for girls but I could be wrong.

A couple of my deals have been north of 750 NA so take that for what it is worth, not much.

RPM kills things

10# on a 500hp deal should not hurt a stock block with good fasteners and a set of after market caps.

How does that Guns and Roses song go? I used to do a little but a little wouldn't do it so a little got more and more...........

I'm pretty sure that song ain't about main cap girdles...................................

You could write that same song about BOOST though come on.

Yup you could.

Can't hurt anything so why not?

It's your money and your decision I do have one Koleno wedge block left for my next serious build, 1000 HP N/A