383 bigblock
#1296598
09/03/12 11:31 PM
09/03/12 11:31 PM
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Joined: May 2012
Posts: 32 LaFollette TN 37766
383ramd150
OP
member
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OP
member
Joined: May 2012
Posts: 32
LaFollette TN 37766
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Well guys,Sold my 318 and now building 383 bored 30 over for my 83 d150!Just want to see what you guys think!Most of the parts have been bought except for pistons and rings,harmonic balancer and water pump!Here is the build specs-383 with 30 over,KB400 pistons for 9.5 compression,906 heads with port job and valve job with stock valves and rockers,weiand 8008 intake,Comp magnum 280H cam with 230@50 duration 480 lift and 2500-5800 rpm,Holley 750 dp,hooker headers,727 with turbo action 3000 stall and 8.75 489 case with 3.91 suregrip!What do you guys think?
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Re: 383 bigblock
[Re: 383ramd150]
#1296599
09/04/12 12:16 AM
09/04/12 12:16 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I'd find some 915 heads & build for .040" quench (piston to head) for a MUCH more efficient eng (torque/mileage/power). 8 blade water pump with an added anticav plate. Possibly a VS rather than a DP carb & if a Holley get one of the holley clones with adjustable air bleeds
live every 24 hour block of time like it's your last day on earth
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Re: 383 bigblock
[Re: 383ramd150]
#1296605
09/04/12 05:34 AM
09/04/12 05:34 AM
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Joined: Jul 2008
Posts: 259 Khemi, Stygia
Mebsuta
enthusiast
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enthusiast
Joined: Jul 2008
Posts: 259
Khemi, Stygia
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That sound like a good motor. I would have used a smaller cam and 625 cfm carb, but you might be a good tuner.
68 Roadrunner. 383 4-spd. Beat up.
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Re: 383 bigblock
[Re: Mr.Yuck]
#1296612
09/04/12 12:17 PM
09/04/12 12:17 PM
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Joined: Jan 2003
Posts: 75,005 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
People that bash them can't tune them.
I guess the same can be said for those that bash Carter carbs
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Re: 383 bigblock
[Re: 383ramd150]
#1296613
09/04/12 12:18 PM
09/04/12 12:18 PM
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Joined: Jan 2003
Posts: 75,005 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
If I was to use kb162 pistons what would i have to do to the 906 heads if i cant get the 516 heads?I've got a holley 3310 too!But if i gonna race it then I can use the dp!
If you use the 906s the 162 is going to have your compression ratio at close to 8.0
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Re: 383 bigblock
[Re: JohnRR]
#1296615
09/04/12 01:36 PM
09/04/12 01:36 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
People that bash them can't tune them.
I guess the same can be said for those that bash Carter carbs
not really.. just depends on what carter/Eddy carb you use for what application. I've used several of them in the past w/o issues. However I would never use the 750 Eddy on a mild 440.
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Re: 383 bigblock
[Re: 383ramd150]
#1296617
09/04/12 02:08 PM
09/04/12 02:08 PM
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Joined: Jan 2003
Posts: 75,005 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
Well i just got off the phone with mancini racing and told them my issue and they said i would have no problem with kb400 pistons and to make sure to measure how far the piston sits!They said if it is not zero decked to run steel shim head gaskets and my compression should be between 9.5 to 10.1!I can make a 750 dp work just like i did on a 360 but i like the 3310 too!And trucks can run too,they might be heavy but so is 71-74 b-bodies plus using 3000 stall and 3.91 gear and may go lower!
What are you planning to do with this truck ? Do you want it to run on pump premium ?
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