PRW...???

[TURNA]

I recall seeing bad things about those.
The Halo is much disputed amongst Ols guys.I can't see a downside to it, especially on a window block.
My only experience is this: when I gave it to Trimble, he didn't say "NO". That's on a steel 425 crank offset to BBC rod journals, 455 stock stroke in a 455 F block.
See if you can get ahold of a J&S Machine piece. Jim's an old hippie; he a trip.

I wanted his and spoke with him for a while today.

He no longer makes the 4 main halo

 

[melloelky]

They gave answers like
It should fit but
the oil pan should work but

that's the worst..

 

[fleming442]

I wanted his and spoke with him for a while today.

He no longer makes the 4 main halo

Ya gotta sweet talk him; bet he's got a stash.

 

[fleming442]

If you're willing to work with it, the PRW couldn't possibly hurt. I just would fully expect to massage it a bit, and use ARP studs.

 

[500/600]

165

I'd like to have actually found one for my Caddy for that price. It would have fit or else! No matter how confident the seller was.

 

[TURNA]

Other companys make them for the Olds engines but you have to machine the main caps.

I'll talk to my machinist after work today see what he says

Its not necessary for a 300/300 engine but I like overkill

 

[TURNA]

Ya gotta sweet talk him; bet he's got a stash.

I was on the phone with him for a while. Who knows?

Give him a call for me please and work your Olds magic!!!!!

 

[fleming442]

I'm pretty sure you need to machine the caps flat for any of them. It's not the end of the world; any competent machinist should be able to handle it. Just make sure it's all done before the align bore.

 

[TURNA]

I'm pretty sure you need to machine the caps flat for any of them. It's not the end of the world; any competent machinist should be able to handle it. Just make sure it's all done before the align bore.

J&S didnt need machining hich is why i wanted it.

The PRW one uses spacers which was another turnoff

 

[fleming442]

IIRC, the spacers are on #5 because of the oil pump (even J&S).