What size Big Block
#1142802
12/24/11 12:16 AM
12/24/11 12:16 AM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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What can you build with a stock 400 block and 4.15 crank? What is the max size you can build?
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: What size Big Block
[Re: viperblue72]
#1142804
12/24/11 12:24 AM
12/24/11 12:24 AM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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Big bores make more power...
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: What size Big Block
[Re: 440Jim]
#1142808
12/24/11 10:48 AM
12/24/11 10:48 AM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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Thanks I have a buddy building a big block to try and run down my small block. I know he has a 400 block and was just at his engine builder and saw his 4.15 crank and just wondered how big of size it could be.
Last edited by 1967DartGT; 12/24/11 10:36 PM.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: What size Big Block
[Re: 1967dartgt]
#1142810
12/24/11 12:10 PM
12/24/11 12:10 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:
Thanks I have a buddy building a big block to try and run down my small block. I know he has a 400 block and was just at his engine builder and say his 4.15 crank and just wondered how big of size it could be.
should be to hard...lol Most guys run the 471-472ish kit. They seem to run real good. Buddy ran mid 9's in an all steel 3300lb+ duster before going to the 500inch low deck, he was in the 9.20's this year. Not bad for an old foot brake car.
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Re: What size Big Block
[Re: 1967dartgt]
#1142812
12/24/11 04:06 PM
12/24/11 04:06 PM
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Joined: Jan 2003
Posts: 16,923 NC
440Jim
I Live Here
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I Live Here
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NC
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Quote:
Thanks I have a buddy building a big block to try and run down my small block. I know he has a 400 block and was just at his engine builder and say his 4.15 crank and just wondered how big of size it could be.
The typical 4.15 stroke sizes:
4.375x4.375x3.14159265/4x8x4.150 = 499.1 CID 4.380x4.380x3.14159265/4x8x4.150 = 500.2 CID
And in a 440 block you see 4.320+0.030" bore = 4.350" 4.350x4.350x3.14159265/4x8x4.150 = 493.4 CID
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Re: What size Big Block
[Re: viperblue72]
#1142814
12/24/11 10:44 PM
12/24/11 10:44 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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He says it ran 146 mph last year in the quarter.It was a 499 10 to 1 compression 700+ lift but less then 800 with the indy sr non max wedge in a 3300 lb dart. I think he was streching the truth some what do you guys think. Isn't that like 750hp to run that fast ib that car? From some of the post about big block it doesn't seem like thats what you guy get out of them.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: What size Big Block
[Re: Mr.Yuck]
#1142815
12/24/11 10:47 PM
12/24/11 10:47 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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OP
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Quote:
Quote:
Thanks I have a buddy building a big block to try and run down my small block. I know he has a 400 block and was just at his engine builder and say his 4.15 crank and just wondered how big of size it could be.
should be to hard...lol Most guys run the 471-472ish kit. They seem to run real good. Buddy ran mid 9's in an all steel 3300lb+ duster before going to the 500inch low deck, he was in the 9.20's this year. Not bad for an old foot brake car.
Its funny I never see these big blocks run those numbers at the track. Well at least a street car that is, I do see gutted out ones run some mid nines.
Last edited by 1967DartGT; 12/24/11 10:48 PM.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: What size Big Block
[Re: 1967dartgt]
#1142818
12/26/11 03:55 PM
12/26/11 03:55 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:
Quote:
Thanks I have a buddy building a big block to try and run down my small block. I know he has a 400 block and was just at his engine builder and say his 4.15 crank and just wondered how big of size it could be.
should be to hard...lol Most guys run the 471-472ish kit. They seem to run real good. Buddy ran mid 9's in an all steel 3300lb+ duster before going to the 500inch low deck, he was in the 9.20's this year. Not bad for an old foot brake car.
Its funny I never see these big blocks run those numbers at the track. Well at least a street car that is, I do see gutted out ones run some mid nines.
They only S/B's I see come close to that are using 2 stages of juice...lol His car runs good, but it's not a street car. It has 2 glass seats and no back seat. He's also or was close to 280. It's tubbed and has big stickies out back, not sure of the size. He broke a rod last race of the season so he's going bigger next year 540 I think. Everything the same except more cubes. Not sure but I think he's running like a 690something solid roller.
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Re: What size Big Block
[Re: Mr.Yuck]
#1142819
12/27/11 11:22 PM
12/27/11 11:22 PM
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Joined: Jan 2007
Posts: 437 south central pa
bdaz smblk
mopar
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mopar
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Posts: 437
south central pa
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Mr.Yuck if you are talking about Bill's blue demon it is a 499 with a 670 lift roller.He bought the motor out of my brothers full interior 30x10 tire 69 dart with mufflers and went 9.30's at 146.And 1967dart gt if you never see a street car with a big block run good you need to get out to different tracks more often.Not saying they are everywhere but there are some good running ones out there floating around.
3120lb, small block, 10.5" tire, NA, through exhaust, full int, WITH 83/4 REAR, 9.0 at 150mph
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Re: What size Big Block
[Re: 1967dartgt]
#1142820
12/28/11 12:26 AM
12/28/11 12:26 AM
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Joined: Oct 2004
Posts: 1,327 south central,Pa
mopar_to_ya
pro stock
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pro stock
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Posts: 1,327
south central,Pa
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Quote:
Yea I agree those big blocks need the naz to run a number
Maybe if you build it, it would need a power adder, or a big block chevy! From what I understand, you got a 400 plus cu in, w-9 motor going on av 10.0's in an abody at a sea-level track. And as bdazz smblk(aka; my Brother) says. You might wanna get out more often yo some diff tracks. And btw, that motor isn't anything special at all!!!!
have a nice day
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