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04-21-2009, 11:15 AM
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#1 |
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Registered User
Join Date: Feb 2008
Location: Bartonville IL
Posts: 415
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motor build
Hi, right now I have a goodrich 350 with a weiand 142 supercharger on it. I just bought a set of heads and am thinking about stroking the motor or just putting in some forged pistons. I bought these AFR heads,http://store.summitracing.com/partde...5&autoview=sku
I also bought a E85 carb for it and I want to try and squeeze 8psi out of the blower, would I be fine with just slapping in a set of forged pistons or should I just stroke the motor with a forged rotating assembly. I'm planing on driving it on the weekend so I dont care for gas mileage. If anyone could point me in the right direction I would be happy, I want to keep the compression low so if want to go back to gasoline I would be fine
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04-21-2009, 12:42 PM
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#2 |
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Registered User
Join Date: Feb 2008
Location: Bartonville IL
Posts: 415
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Re: motor build
mabey a set of pistons like this to just throw in? I want to keep the same compression ratio http://store.summitracing.com/partde...S&autoview=sku I dont know anything about this I'm still learning
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04-22-2009, 07:19 AM
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#3 |
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Registered User
Join Date: Nov 2008
Location: Altus, Oklahoma
Posts: 679
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Re: motor build
I'll throw my 2 cents in.....Since you are kinda wanting to go into the motor
, I would invest in a forged rotating assemble for the peace of mind in knowing it will hold up since you are wanting to up the boost. Also, should you decide to go with a bigger blower, it will be up to the task. Here is my recipe for the 383 bottom end. CRANK: Eagle 4340 Forged RODS: Crower 5.7 Stroker Sportsman ROD BOLTS: Crower ROD BEARING: Clevite PISTONS: ARIS BLOWER PISTONS Joe |
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04-22-2009, 11:44 AM
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#4 | |
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Registered Truck Offender
Join Date: May 2008
Location: hells training ground (aka Ariz)
Posts: 3,118
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Re: motor build
Quote:
Wise words. My receipe may call for a little different brand names, but pretty much would have to agree with every word there. Only think I'll mention, the link to the heads didn't work, which head is it and what is the chamber size? Here's why ,,, A 350 w/ a 6cc flat top piston that has 8.6:1 compression with a 76cc head (most likely with a crate motor) will increase to 9.6:1 ehen you change to a 65cc chamber of most of the AFR non CNC line. You stroke that same motor to a 383 and use the flat top pistons you linked,,, and you have 10.41:1 static compression. I don't know diddley about running E-85 and a blower, even with LOW boost I suspect 10.4:1 is going to be a VERY finicky combination.
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04-26-2009, 04:17 AM
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#5 |
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Join Date: Feb 2008
Location: Bartonville IL
Posts: 415
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Re: motor build
the heads our combustion chamber and I want to keep it around 8.5:1 if I can I would probably be safe with 9.5:1 but I want 8 if it's possible
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04-26-2009, 04:18 AM
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#6 |
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Join Date: Feb 2008
Location: Bartonville IL
Posts: 415
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Re: motor build
they are the CNC heads, 210cc with CNC intake and exhaust runners
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