supercharger questions
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Senior User
Joined: Apr 2003
Posts: 126
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From: Louisville, KY
supercharger questions
Anyone here ever dropped a supercharger on their rig? I have a few idea's running in my head, but I want to here from you guys first. Pro's? Con's?
How much boost can replacement OEM pistons handle? (~9:1)
What is the highest compression that you would want to supercharge?
Do they make low compression forged pistons for a 410/428?
Anything come to mind that would prohibit me from making a supercharger work on a 1976 Hi-Boy w/410/428?
Christopher
How much boost can replacement OEM pistons handle? (~9:1)
What is the highest compression that you would want to supercharge?
Do they make low compression forged pistons for a 410/428?
Anything come to mind that would prohibit me from making a supercharger work on a 1976 Hi-Boy w/410/428?
Christopher
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Joined: Feb 2001
Posts: 6,624
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From: Missouri
supercharger questions
I would never run any type of power adder with stock pistons. There are a few comanies out there that make good custom forgings for the 410. Ross Pistons is one of them. TRW makes a good forging and can be ordered through summitracing for the 428 only. I'm not sure how much boost you will be able to get away with and still have a reliable street engine. You are going to spend a minimum of 600 bucks for the 410 pistons. The 428 will be a little cheaper. Are you planning on boring out the 390 that far?
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Joined: Apr 2003
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supercharger questions
You can also get forged pistons for the 390 @ Summit. I couldn't find them in the catalog but if you call them, Speed Pro makes them. Here is the part number for the forged flat top pistons .030 over: TRW-L2291F30.
I don't think you want flat top pistons for a supercharger, but you may be able to find what you are looking for if you call.
I don't think you want flat top pistons for a supercharger, but you may be able to find what you are looking for if you call.
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Senior User
Joined: Apr 2003
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From: Louisville, KY
supercharger questions
I am goin to try and find either a 406 or 428 bare block. I have the 428 crank already; I could drop it into another 390 as well. I am just thinking ahead to my next project. I may still drop the supercharger on my current 390 just for kicks.
Will Edlebrock's aluminum heads handle the power of a supercharger?
Will Edlebrock's aluminum heads handle the power of a supercharger?
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
supercharger questions
The edel heads will do just fine. Good point Giddie up. Flat tops probably are a bad idea. I bought my L2291F60s from summit. You have to gring them down to use them with a 410 crank though.
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From: Utah
supercharger questions
This particular piston would require a decking of .116" to become the right height for a 410 replacement. CD for the L2291F is 1.776". While a 410 piston (381P) is a 1.660" CD. I'd guess about 8.5:1 with the edel heads.
