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Old 07-06-2011, 06:07 PM
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427 Hp?

Hello

Could I get some in put and a HP guess on this set up?

I have a 427 that is 60 over makes the bore 4.31 and stock stroke.
compression is 13.5 to 1
using 14011077 heads
Roller rockers
solid roller cam @50 276/284
Lift .710/.690
lsa/icl 108/102
38 deg timing with msd ignition
Holley 850 Dp on single plane intake.
Running vp 113 with electric furl pump
2 1/8 open headers

This goes in a jeep wrangler that I mud bog. It has th350 (3800 stall) with 205 transfer case going to a set of dana 60 front and rear with 5.13 gears.

Thank you for the help!
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Old 07-06-2011, 06:21 PM
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Horsepower estimates and dyno sims go to the basics forum, moving this.
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Old 07-06-2011, 06:22 PM
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What size of valves in the heads?
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Old 07-06-2011, 06:26 PM
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I belive that they are 219 188
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Old 07-08-2011, 04:35 PM
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your air fuel mixture odd to be pretty nasty with those valve sizes, only at high rpms im geussing with that cam, and then you could opt for more better leaner burn with a dual plane better fuel air mixture, for better low end torque. If you really want results, whats the intake runners sizes on those heads? Are they stock? If so should make a straw effect and boost torque with better leaner air fuel mixture. Which matching the single plane with, it would not be a problem.. If they aint stock, damn you shouldnt worry about that torque, i think its pretty hot build, please somebody qoute me, im still learning! Im only geussing.
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Old 07-08-2011, 05:24 PM
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I think you could get more low end grunt with oval ports with that cubic inch. But, with that setup. 600 HP.
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Old 07-09-2011, 07:29 PM
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I had a dual plane on this setup and it launches hard but falls off on the top end. So I am going to try a single plane to see if that will help?

Thank You for the input.
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Old 07-12-2011, 08:09 AM
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sounds about right on the intake i think, and if set up right should make a good 600hp in my book.
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