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Author Topic:   motor for modified
terrellracing
Dirt Full Roller

Total posts: 69
posted July 29, 2004 08:30 PM  
what is the best motor to use for a modified. will be running on a 1/4-3/8 semi banked tracks.

iowaracer6993
Dirt Full Roller

Total posts: 61
posted July 29, 2004 08:33 PM  
327 or 350 for gm for ford 302 for mopar 318

quote:
Originally posted by terrellracing:
what is the best motor to use for a modified. will be running on a 1/4-3/8 semi banked tracks.


badfastjr
Dirt Maniac

Total posts: 193
posted July 29, 2004 08:40 PM  
if your just startin' 327's are probably the best. but, 350's are pretty good too

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to finish first, first you must finish

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted July 30, 2004 06:24 AM  
350 for Chevy. Easy to find and moderately priced parts plus easy to build and make power.

Elwood
Dirt Maniac

Total posts: 145
posted July 30, 2004 07:52 AM  
358 I am listing it for sale excellent motor.

NJantz
Dirt Forum Champ
Total posts: 755
posted July 30, 2004 08:10 AM  
get a 355 from JR or Midwest.

BrianW
Dirt Freak

Total posts: 385
posted July 30, 2004 12:09 PM  
Whatever that will get you onto the track without breaking so you can learn the chassis setups and how to drive fast is going to be the "best" motor...

That said I like the cost/performance point of the 355 chevy - my first race engine was using a stock block/crank/rods and a cheap "race kit" (pistons, rings, bearings, gaskets, oil pump, cam) from MWMS and then rebuild the heads with good springs and long-slot rockers you can build a reliable engine that you won't have to worry about. I still use it as my backup engine and it's got 3.5 seasons of racing on it - I put it in the mod to finish the season out last year while the primary engine was awaiting machine work and never expected it to last - it's starting to have some blowby, but it's still reliable. I don't spin it that fast though - 6200-6500 RPM tops..

One thing to consider - too much HP and you'll have more traction issues and more chances of getting out of sorts in the car...

badfastjr
Dirt Maniac

Total posts: 193
posted July 30, 2004 12:57 PM  
brianw hit on exactly what i was thinking. the reason why i said 327's are good to start in is because, you dont have too much hp, so your not constantly spinning the tires. and you can also find a lot of parts that are farely cheap for building them.
BUT BY FAR THE BEST MOTOR YOU CAN BUILD IS THE ONE THAT IS THE MOST RELIABLE

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to finish first, first you must finish

mod70
unregistered Total posts: 193
posted July 30, 2004 02:39 PM           send a private message to badfastjr   Edit/Delete Message   Reply w/QuoteBBBBBB
I'm with Brian also. My first motor was a fairly stock 355, they rap out quickly to get you up off the corner. I've since gone to a 377, best of both worlds, still small enough to get the revs up quick and good top end power.

Racer111
Dirt Freak

Total posts: 259
posted July 31, 2004 11:28 AM  
IMCA or UMP ?

racer17j
Dirt Forum Champ
Total posts: 5390
posted July 31, 2004 12:29 PM  
I am seeing more engines with vortec heads do well at our IMCA track. 46 mods and the winner was a 355 with vortec heads. They are cheap enough and don't need much work to run. Intake manifold is a little more though. I have seen inside two winning motors with vortec heads and neither has had any port work. If you look down the intake you can see the back of the valves. Nice straight shot for the fuel/air.

Good luck,
Superdave

klw45black
Dirt Full Roller

Total posts: 42
posted August 04, 2004 02:25 PM  
426 hemi with a blower and 90% nitro and direct drive...oh wait wrong forum!!!

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