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Which 383 kit?

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Old Feb 28, 2006 | 10:51 PM
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Default Which 383 kit?

Which is the best 383 stroker kit to buy for my base L48? Any websites for me to look for them? I'm looking for a decent kit thats not gonna break the bank......
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Old Feb 28, 2006 | 11:05 PM
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I've been looking through the Summit catalog. You can get it from www.summitracing.com. They have a few to choose from.

I would be interested in hearing what some other people have used.
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Old Feb 28, 2006 | 11:59 PM
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You should be able to get a good stroker kit with a cast crank, hyperutectic pistons, rings, bearings etc. for under $1000.

Loolk at either a Scat 9000 or Eagle cast crank, SIR rods are good also, and SpeedPro or Keith Black pistons, good for 550 HP
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Old Mar 1, 2006 | 09:56 AM
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Has anyone found a kit that does not need external balancing or block fabrication?
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Old Mar 1, 2006 | 10:23 AM
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Originally Posted by dgruenke
Has anyone found a kit that does not need external balancing or block fabrication?
World Products WRL-101099 is an internally balanced rotating assembly. No additional balancing is needed. Almost always, some block and/or oil pan modification will be required, and a reduced base-circle cam may be required.
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Old Mar 1, 2006 | 10:32 AM
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Thanks big G.

I did notice that some kits require the reduced base-circle cam. What is that, and what manufactures produce it?



kylelm: sorry to ask questions on your thread, but I hope some of these answers help you also.
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Old Mar 1, 2006 | 11:00 AM
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Almost all cam manufacturers make "Stroker" cams. The additional clearance is necessary to prevent the connecting rods from hitting the lobes.
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Old Mar 1, 2006 | 11:00 AM
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Take a look at OHIO CRANKSHAFT, I used one of there internally balanced rotating assy's for my 383 and was very happy. It was about 1500.00 and all parts made in the USA.
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Old Mar 1, 2006 | 01:50 PM
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I can offer you a 383 kit with 5140 steel crank, 5140 steel 6" rods, Keith Black Hyperutectic pistons, Rings and Clevite 77 h-series bearings for $900 plus shipping (around $100) or about $1050 plus shipping with forged pistons. or $700 plus shipping with a nodular iron crank. PM me if interested.
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Old Mar 1, 2006 | 02:04 PM
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You can get a 383 rotating assembly from Speedway Motors delivered to your door ext. balanced and assembled for less than 800.00. Unfortunitely this is the path that I took and am stuck with these people for over a month because of a back order from Keith Black . Depends on your budget and how long you want to wait.

Chris
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Old Mar 1, 2006 | 02:49 PM
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I really appreciate all the advice and offers. A couple more questions, though.

Is it necessary to go with forged crank and pistons if the engine is not going to be more than 400 h.p.?

Also, I don't understand the difference between the 5.7" rods and the 6.0" rods. If a 383 is really a 383 because of the increase in the stroke, how can you have a 0.3" difference in the stroke and still have the same c.i.?

Thanks again for all the help.
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Old Mar 1, 2006 | 02:57 PM
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Originally Posted by dgruenke
I really appreciate all the advice and offers. A couple more questions, though.

Is it necessary to go with forged crank and pistons if the engine is not going to be more than 400 h.p.?

Also, I don't understand the difference between the 5.7" rods and the 6.0" rods. If a 383 is really a 383 because of the increase in the stroke, how can you have a 0.3" difference in the stroke and still have the same c.i.?

Thanks again for all the help.
For your application, you don't need forged parts.
The stroke is 3.75 inches. The rod length does not change the stroke, only the piston pin height.
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Old Mar 1, 2006 | 03:01 PM
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Originally Posted by dgruenke
I really appreciate all the advice and offers. A couple more questions, though.

Is it necessary to go with forged crank and pistons if the engine is not going to be more than 400 h.p.?

Also, I don't understand the difference between the 5.7" rods and the 6.0" rods. If a 383 is really a 383 because of the increase in the stroke, how can you have a 0.3" difference in the stroke and still have the same c.i.?

Thanks again for all the help.
The wrist pin is set .3 higher on the piston to maintain the same stroke. The 6" rod removes some of the anglarity involved when stroking an engine (crank throw is more extreme). For around 400hp, cast crank & 5.7" rods are just fine. Either get one of the kits that are balanced by the manufacturer (they will come with a flywheel/flexplate & harmonic balancer) then have your machine shop check the balance or pay the shop for a full balance.
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Old Mar 1, 2006 | 03:10 PM
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you will save money in the long run if you buy a short block assembly already made into a 383. i got a short block ( just block and rotating assembly ) with forged crank, h- beam rods, and forged silvolite coated pistons for 1800, with all the balancing and machining already done. if you can find a machine shop to do all that to your stock block, i say go for it. check out P.A.W., they offer great prices and alot of choices
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Old Mar 1, 2006 | 03:14 PM
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I think that I can pick up a block that needs rebuilt for a couple hundred bucks, and have it bored .030 over. If I can get this, then I can get cast equipment to put in it.

I just hate to pay double price for the forged if I won't need them.
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Old Mar 1, 2006 | 10:05 PM
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Originally Posted by big_G
Almost all cam manufacturers make "Stroker" cams. The additional clearance is necessary to prevent the connecting rods from hitting the lobes.
Is it always necessary to buy a "stroker cam" for a 383?
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Old Mar 1, 2006 | 10:29 PM
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Is "stroker cam" anything like "RV cam"?

concern your self with cam "selection" with consideration of heads, intake, and exhaust. Yes a stroker has more volume than a 350 and can better use more cam, but not the only factor in selecting a cam.
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To Which 383 kit?

Old Mar 1, 2006 | 10:52 PM
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Originally Posted by kylelm
Is it always necessary to buy a "stroker cam" for a 383?
No, but depeding on your particular engine build, it may be necessary. "Stroker" cams are ground on a smaller base-circle.
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Old Mar 3, 2006 | 09:06 AM
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Originally Posted by big_G
World Products WRL-101099 is an internally balanced rotating assembly. No additional balancing is needed. Almost always, some block and/or oil pan modification will be required, and a reduced base-circle cam may be required.
What kind of block and/or oil pan mods are we talking about???
Later,
Sly
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Old Mar 3, 2006 | 09:17 AM
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Only slight grinding on the bottom of some cylinders and possibly the oil pan gasket flange area. You can buy an oil pan that is designed for rod clearance. Let the machine shop do the block work, they should know what to do. Also, Crower and other rod companies make rods with additional clearance designed in for stroker engines.
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