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Old 02-14-2008, 08:40 PM
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383 Stroker Kit ?

Hi I was wondering why people convert a 350 into 383s ?. When you do this what does the extra stroke improve ?. I know they are very torqey, is this because of the extra stroke ?. Where Can you find a prebalanced kit for 700 and below ?.

Thank you

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Old 02-14-2008, 09:15 PM
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383 Stroker Kit ?

people convert 350s into 383 because it is an easy and fairly cheap way to gain cubic inches and power. you use a 400 crank (3.75 stroke), flywheel and balancer and also bore the block .030. the extra stroke improves low end torque. they make really good street motors. you can find stroker kits in any mailorder catalog but they most all of the time dont come balanced and even if they did i would take it to a competent machine shop to make sure it was balanced correctly. you dont want your motor shaking appart after you spent all of that money to build it. heres one from summit http://store.summitracing.com/partde...5&autoview=sku also make sure that when you buy the crank, flywheel and balancer that it is all either externally or internally balanced. hope that helps some.
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Old 02-14-2008, 09:26 PM
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If you use the actual 400 crank you have to have the journals turned down to the medium journal size.

Shane
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Old 02-14-2008, 09:43 PM
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Don't forget to clearance the block and rods so they don't hit.
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Old 02-14-2008, 10:02 PM
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www.gofaststuff.com eagle 383 kit fully ballanced $719 free shipping .he is also on ebay
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Old 02-14-2008, 11:40 PM
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Theres no replacement for displacement, In other words the more cubes the more power. What are your goals you are looking to meet? Is this going to be a street car, strip car? all these play a role into what kind of parts you need. Dont skimp on the bottom end as this will be the first to go when you keep your foot into it for too long. All depends on what you are looking to do with the motor.
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Old 02-15-2008, 07:07 AM
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Quote:
Originally Posted by johnbelanger
www.gofaststuff.com eagle 383 kit fully ballanced $719 free shipping .he is also on ebay

I bought this kit, sometimes if you wait to the end of the auction he will lower the price to $689, it is the best kit for the money, and the rods come clearanced from Eagle so you can clear up to a .600 lift cam
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Old 02-15-2008, 08:44 AM
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Which ever kit you buy have the big end and the small end of the rods checked for size and have the pin bores in the pistons checked as well as these kits are not ready to install like they advertise.
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Old 02-15-2008, 10:26 AM
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what should the sizes be ?my kit has floating pins
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Old 02-15-2008, 10:33 AM
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Quote:
Originally Posted by johnbelanger
what should the sizes be ?my kit has floating pins
Everything has to be measured out and clearanced at our shop if we sell and engine kit with a block everything is clearanced out and its truely ready to assemble and we balance all our own assemblies as we have found magazine balance jobs are not very close some times.

Good luck with your build Carl
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Old 02-15-2008, 10:37 AM
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Quote:
Originally Posted by johnbelanger
what should the sizes be ?my kit has floating pins
Rod and main bearing clearace should be .002 to .0025, pin end of the rod should have .0009 to .0011 clearance and the pin bores in the pistons should be .0008 to .001. clearance.

These on some of the high end circle track engines we build we run more rod and main oil clearance.
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Old 02-15-2008, 10:44 AM
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mine came with a ballance spec card .what should i look for?sorry for hijackig
this thread

Last edited by johnbelanger; 02-15-2008 at 10:52 AM.
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Old 02-15-2008, 10:48 AM
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If the piston box is sealed and the rods are still in there plastic wrapers there is a good chance it was not balanced to your parts you as we have seen some magazine jobs off 32 grams.

But with the parts no even taken out of there packages howed they do that HMMM
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Old 02-15-2008, 11:38 AM
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Quote:
Originally Posted by CNC BLOCKS N/E
Quote:
Originally Posted by johnbelanger
www.gofaststuff.com eagle 383 kit fully ballanced $719 free shipping .he is also on ebay



I bought this kit, sometimes if you wait to the end of the auction he will lower the price to $689, it is the best kit for the money, and the rods come clearanced from Eagle so you can clear up to a .600 lift cam
I second this, i bought the same and was a great kit.
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