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Author Topic:   383 question
nyimcamod8t
Dirt Full Roller

Total posts: 67
posted February 19, 2005 05:21 PM  
looking at building a 383 6" rod flat top motor. and durability issues associated with the long stroke and rod combo. seems like the piston will be quite short and tend to want to rock in the bore. any suggestions or thoughts?

stockcar5
Dirt Forum Champ
Total posts: 578
posted February 19, 2005 07:08 PM  
i can tell you that i ran the same thing and it worked well. i got 25 nights out of it before i spun a rod bearing (poor oil control caused by a cheap claimer pan)

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nailngoracing
Dirt Maniac

Total posts: 170
posted February 20, 2005 01:52 AM  
i hear that you can't hook up strokers.

and that they don't hold together very well.

nyimcamod8t
Dirt Full Roller

Total posts: 67
posted February 20, 2005 06:23 AM  
not really to worried about hooking it up. with these 4-z cars you can just about pull a wheelie. i just need a good strong motor that will last a season and not be a time bomb. anyone else have any experience with this engine?

rocket36
Dirt Freak

Total posts: 209
posted February 20, 2005 07:17 AM  
i would have thought, that like any engine, if you use quality parts, prepared correctly, assembled paying attention to detail, and tuned up correctly you would have no problems.
keep the compression ratio within reason, run quality oil and keep on top of the maintenance.

i think its only really when you start getting over 400cui that hooking them up can be difficult at times (slick or short track).
personnally i think the 380cui engines are just a nice size. a good compromise.


turnleft44
Dirt Full Roller

Total posts: 45
posted February 20, 2005 07:05 PM  
We have a 350 we bored 60 over with the flat top hypertectic pistons and a 383 scat cast steel crank. We used good h-beam rods though, not top of the line, but i liked the motor and have it for a back up. Not afraid to use it again.

crc1124
Dirt Maniac

Total posts: 143
posted February 20, 2005 07:12 PM  
We are running a 383 with 13.5:1 compression. Best running motor I've ever had. We ran it all year with no problems and are running it again this year. If you use quality parts and maintain it, you should have a good engine to last a while. No matter what engine you use quality parts and proper maintenaince are what will keep it together. I used crower 6" rods, JE pistons, clevite bearings, etc...
Depending on the track conditions, you have to have respect for the torque. We run between 6500 and 7000 rpms. on a regular basis. Being a stroker motor in itself isn't a reason for it to fail.

nailngoracing
Dirt Maniac

Total posts: 170
posted February 20, 2005 08:21 PM  
what cam and heads work well with the strokers...don't they move a lot of air? I run 350's at 6800 and heard that the strokers don't need near the r's that 350's do?

crc1124
Dirt Maniac

Total posts: 143
posted February 21, 2005 07:47 PM  
I use .533 intake .555 exhaust 106 lobe 280 290 duration. I really like the way runs. I'm going to a triple disc clutch this year. I'm real curious how that will work out.

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