Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

10s N/A ?

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Old Dec 12, 2009 | 05:39 AM
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Default 10s N/A ?

I want to hit 10 seconds N/A in my 3rd gen now it has 383 with brodix heads and air gap intake I will change the set up soon it will be 427ci short block from Scott Shafiroff,Brodix Track 1 221cc unported heads,custom ground cam 4/7 swap,victor jr intake and the tranny is TH350 now it has 3000 stall can it hit 10s ? I only removed the front bumper safety and the whole A/C system and audio system,I might order Spohn coil over k member kit soon and 8.5" rear end I need to know how to let my 3rd gen hit 10s N/A ZONES where are you
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Old Dec 12, 2009 | 01:19 PM
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I run 10.60's NA with my 383 on pump gas. Race weight is 3480. It can easily be done.
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Old Dec 12, 2009 | 02:59 PM
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YEa, if all your suspension is right and you have a good set of rubber with some 3.73-4.10 gears, you should get there, but i would say use a 3500 stall to get the 60 foot down a bit better.

The 383 can make 550 HP on pump gas, so with a 427 you are looking at 600 or so depending on all the goodies and guessing by the 4/7 swap cam it is taking advantage of every possible hint of power.
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Old Dec 12, 2009 | 03:13 PM
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Im amazed u not running 10's now. with those heads. needs a jr. imo
u wont need to much upgrading from where you are now to hit 10's.
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Old Dec 14, 2009 | 06:20 AM
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Zones said it best. Suspension has a lot to do with it. I had picked up over a second with my 68 Bird years ago by playing with the suspension.


Good luck on finding a 8.5 to fit the car. Unless you go ladder bars and coil overs. You can buy 12 bolts to bolt in.
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Old Dec 14, 2009 | 07:38 AM
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I don't know what your heads flow, but I have seen numbers for the Air Gap and the regular Victor Jr...they are nearly equal. Both are probably a restriction to the heads you have now (the intakes flow around 230CFM on the good ports). A Super Victor or Motown would be a better choice for the 427 (both flow around 280). If the 383 sees street time, I would stick with the air gap and get it ported...keep that low end torque. Either engine should get you into the 10's. I would keep the 383 and spend your money on suspension and a torque converter (3600-4400 stall...depending on your current camshaft).
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Old Dec 14, 2009 | 08:18 AM
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the camshaft on the 383 is very small its 224/230 with .50×"/.510" lift and those heads breath well over .600" lift so I will custom ground cam for the 427
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