Silv-O-lite Pistons
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Fleet Mechanic
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From: Montana
Silv-O-lite Pistons
Anyone here ever used Silvolite pistons before? Just wondering how good they are. The description for them says "for cars and trucks" or "for trucks" "not for raceing use". Now does that mean not for official race use? Will they be good enough for a performance street setup? He's got a set of pistons I like but i wasnt sure if they would handle 400 ponies or not.
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From: Iowa
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Fleet Mechanic
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From: Montana
Well i wish i could run those but there too short for the 360 motor....I could have swore I read something in here that suggested using silvolite pistons. If they will handle 400 hp it would be perfect.
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From: East TN.
the silvolites are a keith black hyperuetectic piston thats a little stronger than a regular cast piston but not as strong as a forged piston. i am running these pistons in my windsor motor in my falcon, and they have withstood many 7200 rpm blasts. i wouldnt put them up against a lot of boost or nitrous though. but should be good for 400 horse. my windsor is up around 450. hope this helps. 
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Fleet Mechanic
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From: Montana
Thats cool.....thanks, I am hoping to det 400hp or close so thats good to know. my DD2k estimates are 401 hp at 5500 rpm so i figure thats a little generous but just to be safe ill assume its 400 and make sure that the parts are up to the task.
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From: Iowa
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Fleet Mechanic
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From: Montana
No I haven't given up yet
But those were the ones i was talking about. but i wasnt going to shave them i was going to use 6.488" rods with those pistons and the 360 crank. throw a crane941 cam....edel intake and edel heads with a nice 670 carb.......
I hope it will do ok.
But those were the ones i was talking about. but i wasnt going to shave them i was going to use 6.488" rods with those pistons and the 360 crank. throw a crane941 cam....edel intake and edel heads with a nice 670 carb....... I hope it will do ok.
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From: Iowa
Well let me see here... Approx. 10cc dish, 70cc heads, .030" deck clearance, .020" thick copper shim head gaskets, I think you're looking at 9.1:1 compression with that setup. If it didn't have that humongo dish in it you might be ok. With the long rods you accomplish 2 things: You shave the pistons and reduce the dish size, and you zero deck the piston. Do that, and you're at about 9.7:1 compression.
I was guesstimating on the dish volume. I would call them and figure out just what the dish volume is and get back to us. It really all hinges on that. I mean, if it's 20cc you might as well throw this idea out the window.
I was guesstimating on the dish volume. I would call them and figure out just what the dish volume is and get back to us. It really all hinges on that. I mean, if it's 20cc you might as well throw this idea out the window.
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Fleet Mechanic
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From: Montana
Yea i was hopinig that they would be no more than 5 cc dish.....If they were flat tops it would be perfect.I wasnt planning on running the shims either.
I found a site that is selling those pistons for the stock motor of course....it said that the approximate head volume is 24cc or 22cc. Im not sure where that puts me I dont know how to calculate that but. If a 361 is 22-24cc...that will make m....
Check it....http://www.beckracing.com/slvpg50.htm
I found a site that is selling those pistons for the stock motor of course....it said that the approximate head volume is 24cc or 22cc. Im not sure where that puts me I dont know how to calculate that but. If a 361 is 22-24cc...that will make m....
Check it....http://www.beckracing.com/slvpg50.htm
Last edited by EgoMan; Oct 7, 2004 at 10:18 PM.
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From: Iowa
Well, I think you're stuck with the long rods then. If you shave .022" off and use the long rods, you're down to about 19.5cc for the dish. You'll then have 'em at zero deck. Still, with a .020" thick head gasket you'd only have about 8.95:1 compression.
FWIW, 5cc is about the amount I try to use for valve pocket size in flat top pistons.
I think it's about time to give Ross Racing Pistons a call.
FWIW, 5cc is about the amount I try to use for valve pocket size in flat top pistons.
I think it's about time to give Ross Racing Pistons a call.
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Fleet Mechanic
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From: Montana
Yea, for the amount of money this build will cost i think i can splurge on a set of custom cut pistons. I dont think it will be that bad to have a set of HYP pistons cut flattop at 1.902.........I just wish i remember what site i was on that said they do custom pistons like that. If its 500 dollars i think i can swing it.
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From: Iowa
Post Fiend
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From: Iowa
He's making a 360. He needs the extra compression height. The Speed pro / TRW L2291's have a compression height of 1.776. While this is perfect for a 390, it results in low compression in a 360 due to excessive deck clearance.
The perfect piston for this application would be a flat top forging, with valve reliefs, with a compression height of 1.932". That would give 9.84:1 compression with a readily available .040" thick head gasket.
The perfect piston for this application would be a flat top forging, with valve reliefs, with a compression height of 1.932". That would give 9.84:1 compression with a readily available .040" thick head gasket.
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Fleet Mechanic
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From: Montana
I would but its a 360....I dont want to build a 390. Its a 1.75" crank throw, 6.488" rod and a 1.902" rod= 10.14 inch deck so thats .030" clearance. Thats what i need to get above 9.0:1 compression, and still achieve 400 hp.