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Author Topic:   383 or 377?
GET-n-IT 12
Member
posted September 04, 2002 11:47 PM
We run 1/4 mile, high bank, wide dirt track.
Running older REC modified.Want to run dart 230cc heads with roller . Want to get started on motor for next year but can't decide which one. Any sugestions?


YAR
Member
posted September 05, 2002 12:33 AM
I like the 377 also. They just seem to be a lot happier engine under racing conditions. Our old 383s always seemed to be laboring, then we went to a 377, and the first night out, most of the 406 boys happened to drop by our pits after hot laps, just to see what was up.


outlawstock17
Member
posted September 05, 2002 01:56 PM
the 377 is going to live at high rpm's longer than the 383, but there is no substitute for cubic inches. i'd run the 406 with a slightly taller gear to take advantage of the extra torque and to increase durability.


Wheels47
Member
posted September 08, 2002 09:24 PM
The 383 is a lot lees peaky than the 377,
The three time Canadian imca champion uses a 383 and he says its got such a nice power curve he can nail the throttle half way through the corner and it will pull consistent down the straight .This means you chassis will not get unsettled and this means faster lap times.


outlawstock17
Member
posted September 21, 2002 01:10 PM
i'm hip wheels, i run a 393 windsor with n351 heads. it's a torque monster and sure handles good "down the straightaway".


rico 08
Member
posted September 23, 2002 12:49 PM
on a mod i'd run the 377 it's a little easier to get off the corner and if you spin the tires you won't go past the power curve which on a 383 you might.


Merlin
Member
posted September 23, 2002 08:40 PM
hey merlin, that's an old 360 sprint car favorite. they rev to heavens and keep the piston skirts from yanking off. look at NASCAR engines. that's about where they are on bore and stroke and they twist 'em way up there.


Merlin
Member
posted September 24, 2002 08:42 PM
BESIDES USING THE BEARING SPACERS IS THERE ANYTHING ELSE THAT HAS TO BE DONE TO BUILD THE 377 ? JR MOTORSPORTS HAS 377 SHORTBLOCKS FOR $ 1600.00 AND BALANCED ROTATING ASSEMBLIES FOR AROUND $ 850.00. I'M ASKING BECAUSE I HAVE A FRESH 400 BOCK AND 10/10 350 CRANK AND THOUGHT I MAY BUILD IT MYSELF USING 6 INCH RODS AND FLATTOP HYPEREUTECTIC PISTONS FOR A #3600 STREET STOCK ON 3/8 AND 1/2 MILE TRACKS...


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