400 sbc buildup options
09-19-2002, 03:11 PM
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400 sbc buildup options
ok heres the deal. i've got a '76 400 sbc and was wanting some opinions on whether i should build it up as a 377(destroked), a 406(.030 over), or a 420(.030 over+3.875 stroke crank), and also list reasons for replies.
09-19-2002, 03:22 PM
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Car: 97 WS6 T/A
Engine: LT1 383
Transmission: 4L60E
What purpose are you going to have the engine fill? will it be a daily,sometimes or race only driver? how heavy is the car? Planning on running gas , alky nitrous ?
09-19-2002, 05:55 PM
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Car: 1986 Iroc
Engine: 454 Demon 850DP
Transmission: TH350, 3500 stall
Axle/Gears: 3.73
Don't reuse the 5.565" rods. Go with 5.7's or if you are getting really serious look at using 6.0 rods.
09-19-2002, 06:00 PM
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There is no replacement for displacement...don't destroke a 400 unless you have something light like an S-10 and plan on revving the **** out of it....
just my $.02...
just my $.02...
09-20-2002, 10:10 AM
#6
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The 406 will give yu the most bang for the bucks.
Put the extra money you would have spent on a
stroker, into cylinder heads. You'll be better off overall.
Put the extra money you would have spent on a
stroker, into cylinder heads. You'll be better off overall.
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