top end support
 

hey, i am looking for a part that you install in the lifter valley to stiffen up the top end. i forgot the name and if anybody knows where to purchase it at that would be great.

the lifter dog bone?

does it bolt into place to hold the upper part of the block from cracking under high power?

go to horsepowertv.com (part of powerblocktv.com) and check it out there. They just had a show about that yesterday. they always advertise their test parts in the hot parts section.

It's stiffens the lifter valley of the block which is still called bottom end despite its placement at the top of the bottom end... the "top end" is the heads and valve train.

hey thanks, i thought i have seen it somewhere. i looked on their website but cant seem to find it.

I'll see if I can dig it up for you.

not listed yet. call up the powerblock and see if they can point you at it.

ah a lifter valley girdle then. Good show summit racing carries though still i belive.

they're like a girdle but it's a 3 piece set that I saw on HPtv. Requires drilling .75" deep holes in the block and tapping in some roll pins. I don't like the design... I think it fails at one key part of the windsor block flexie break problem... twisting. If there's a single piece solution that helps control twisting I think that would be better. ANybody ever seen such a thing?

thanks, ive found them through www.horsepowersales.net

they claim it greatly strengthens the block, but i dont see how with 3 small screws????? it doesnt seem possible by there setup. any other opinions???

if it could be welded on I think it might be really helpful but since it's using roll pins at the ends and a single small screw in the middle... I don't think it'll help much. Still anything is better than nothing. Really only useful for siamese bore 5.0's making over 500hp. I say instead of wasting money on band-aids why not fix the problem with a FRPP R block, World products block or a Dart block. hell even a mexican block should be stronger.

should be two screws (maybe im wrong), but the screws arent for support, they are for indexing and placement. its job is to prevent twisting and give support to the valley, the valley is jus a big open hole really, and this bridges that. but i agree with the above. if you have that much power, buy a racing block!

way true... having seen a 5.0 come apart I can tell you that a racing block is worth its weight in gold if you're over 500rwhp. When a windsor cracks in half it's shocking to say the least and usually destroys the rotating assembly.

The one I saw on the powerblock was a single screw in the valley and a roll pin on each side by the head. Could be multiple designs... never can tell.