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spitty
10-05-2008, 07:35 PM
does anyone knwo if theres a complete rebuild kit out there for a 383 that includes pistons?


or am i gonna have to buy a rebuild kit for a 350

poostang
10-05-2008, 07:45 PM
burn it

spitty
10-05-2008, 07:53 PM
NEED MORE POWER

tchevy
10-05-2008, 07:54 PM
yah you can just get pistons if u have the crank already. but if the skirt is to long it can hit the counterweights. just buy a rotating assembly from scat or eagle. i got an eagle with the lightweight crankshaft, rods, forged pistons, moly rings, clevite bearings and it was great. good clearances all around. bit pricey tho at around 1200 bux. but adding it all up it was cheaper to get a kid than go piece by piece[cheers]

poostang
10-05-2008, 07:55 PM
tyler cant afford that

spitty
10-05-2008, 08:21 PM
tyler cant afford that
haha:confused0006:

Josh_M
10-05-2008, 10:01 PM
http://www.rpmmachine.com/stroker.shtml

kootenaycat
10-05-2008, 10:45 PM
Lordco's fall trade show catalog is out now, it usually has Scat cranks on sale. Last year I think the 383 crank (cast) was about $230. I think the rods were on sale too, not sure about pistons. Will also need the right harmonic balancer and flywheel/flexpate. And need to clearance the block, nothing a die grinder can't take care of.

Nutbar
10-05-2008, 11:06 PM
If this is a first time build for a 383, not a previously built one, you might want to have a machine shop do all the clearancing and ballancing that is needed. The 350 block and 5.7 inch rods weren't built for a 3.75 inch stroke and as Kootney said there is some clearancing required in the block as well as clearancing on the cam side of the connecting rods and rod bolts. Also if you are not going all out for an internally ballanced crank there is no factory externally balanced flywheels or harmonic ballancers correct for this combo so either you will need to have factory ones ballanced with the assembly or gamble that the aftermarket 383 stuff is ballanced right either way I would have it all ballanced anyway it just helps the rotating assembly last longer.

This comes from a little experience I have built a couple of 383s and helped on a few others.

dirka dave
10-05-2008, 11:07 PM
Weld two toyota engines together...

tchevy
10-05-2008, 11:21 PM
and the sbc would still chew it up:D

HEAVY METAL
10-06-2008, 07:30 AM
but a stock 454 in.. cheaper and more torque

dirka dave
10-06-2008, 04:45 PM
Ok, three then...:D

tchevy
10-06-2008, 05:19 PM
thats more like it. but i will admit those 2.5 are a great little motor

FZJ80
10-06-2008, 09:27 PM
Look into PAW. Performance Automotive Warehouse , they have several kits including new ballancer and flex plate from as low as $639.oo. The kit for $839is the one i would start to look at as the cheaper kit uses 5.5" rods. The kit with longer 5.7" rods would be better but 6" rods are better yet. Short rods produce more side thrust in the bores reducing engine life aswell as other unwanted side effects. Cast Hyper,or Forged pistons depends on what you are doing with the motor but keep it at or below 10:1. Choose parts that build torque over horspower.

tchevy
10-06-2008, 09:31 PM
with a 6 incher the wristpin has to go through the oil ring so you get funky rings:confused0006:

FZJ80
10-06-2008, 09:46 PM
Hasn't been a problem for me in the past and iv'e done 3 with 6"ers. I'm guessing he is not looking to spend that much for a motor anyways so it's a moot point.

tchevy
10-06-2008, 09:51 PM
yes it can get $$$$. i was thinking about going 6 in mine but i was kind of afraid of something different (wristpin issue) but i too have heard people have no problems with it

FZJ80
10-06-2008, 10:03 PM
They rev way nicer and make a little more power with the longer rod ratio. I have most of the parts for #4 under my bed right now, one day i may even get to it.

nbrowser
10-06-2008, 10:08 PM
but a stock 454 in.. cheaper and more torque

Why stop at 454 CID....go to the extreme ! 572 !

Nutbar
10-06-2008, 10:11 PM
Unless you are looking to spin some serious RPM, 7500 +, you don't need 6 in rods the 5.7 rods are more than sufficient for the average street/strip type engine. Even with the 5.7s in a 383 most pistons you get still need a more specialized set of rings on em there is so little ring land above the wrist pin that the rings are very narrow, the ones in my current 383 are the plasma ceramic drag rings they were the only ones I could get in the correct thicknes

FZJ80
10-06-2008, 10:24 PM
Agreed.

tchevy
10-06-2008, 10:35 PM
i got mahle pistons. they had thin rings but when it is good quality it is no prob. just a bit of piston slap due to the forged and really short skirt

FZJ80
10-07-2008, 06:20 AM
Once they are up to temp there should be no more noise than a cast piston. They may require a little more in the way of clearance from the head though because of the short skirt. Like with everything there are tradeoffs and every one of them can be debated till hell won't have it.

Justin_B
10-11-2008, 04:44 PM
tyler cant afford that


I agree, hey i'll help out your motor fund and i'll buy a puppy off you

spitty
10-11-2008, 08:16 PM
I agree, hey i'll help out your motor fund and i'll buy a puppy off you
still 5 months before shes ready to have puppies, but you're second in line for picking one

FZJ80
10-15-2008, 09:49 PM
What are you looking to spend on a 383?

spitty
10-16-2008, 07:49 AM
What are you looking to spend on a 383?
never really set a price, it would be a really slow build figured id find parts every now and then untill its all there