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Author Topic:   choose a motor
posted August 06, 2003 04:38 AM
I race a 79 chevy malibu in the bomber class. the engines have to be stock.But you can swap parts as long as there GM.
my question is which motor would be better, a 283,350 or a 400? I was leaning toward a 283 because its quicker reving and can rev higher. a 400 has lots of power but it wasnt made to handle the stresses of racing. which would be better?

posted August 06, 2003 05:59 AM
my opinion is...cubes are everything.Build the 400 with quality parts and some mild machining.Bet some of those cars in your class are not as stock as tech

posted August 06, 2003 06:20 AM
the 283 may rev higher, but the 400 will have the torque to pull you out of the corner.
Select the right cam shaft to take advantage of the torque and keep it geared lower.

posted August 06, 2003 04:29 PM
the only replacement for cubic inches is cubic $$$$$$$$$$ sell thart 283 to a street rod or drag racer and put the cash in the 400 and put a re ring kit in the 350 for a back up

posted August 06, 2003 04:49 PM
400 with 5.7 rods and good bolts

posted August 07, 2003 09:21 AM
383 will be cheaper, easier, nearly as powerful and a **** of a lot more reliable than a 400.

350 4 bolt blocks are common as dirt and you can get a new 'cast steel' 3.75" stroke crank with 350 main journals for around $200. Reuse the 350's 5.7" rods with ARP bolts, Keith Black hypereutectic pistons and it'll sing to about 6200-6500 rpm all year long.

gerald berry jr
posted August 07, 2003 10:30 AM
they do not make any substitute for cubic inches

posted August 07, 2003 07:04 PM replacement for displacement

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