400 block B1 build
#2693472
09/01/19 05:18 PM
09/01/19 05:18 PM
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Joined: Aug 2003
Posts: 1,578
KOS
OP
pro stock
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OP
pro stock
Joined: Aug 2003
Posts: 1,578
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well guys I'm having a tuff time finding a aftermarket block so I have a line on a good 230 400 block sonic checked .226 finished bore at the thinnest ...with aluminum caps what HP level do you think I would be safe(reliable) with N/A??
Last edited by KOS; 09/01/19 05:19 PM.
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Re: 400 block B1 build
[Re: KOS]
#2693505
09/01/19 08:17 PM
09/01/19 08:17 PM
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Joined: Jan 2003
Posts: 5,486 SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,486
SoCal
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Fill the block up to just below the bottom of the water pump holes...will add approx. 15% of strength to the block overall, and help keep the bores from "breathing" so much under WOT. That, and a good tuneup, not over revving the engine will all help it to last a while.
Brian Hafliger
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Re: 400 block B1 build
[Re: KOS]
#2693508
09/01/19 08:25 PM
09/01/19 08:25 PM
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Joined: May 2004
Posts: 12,422 Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,422
Taxes & Virus's R-US, NY
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well guys I'm having a tuff time finding a aftermarket block so I have a line on a good 230 400 block sonic checked .226 finished bore at the thinnest ...with aluminum caps what HP level do you think I would be safe(reliable) with N/A?? Well, my little 400/512 build has been great at 755hp with no signs of any issues since adopting new valve train....I would go a bunch more if you keep the rpm reasonable and hit the tune up right. Mine is not filled, only has a girdle. I have been contemplating a 383/496 build with an F2 at 18psi....So I might be able to let you know at what point it lets go......
Last edited by Dragula; 09/01/19 08:34 PM.
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Re: 400 block B1 build
[Re: Dragula]
#2693509
09/01/19 08:28 PM
09/01/19 08:28 PM
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Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
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Tom Hemphill in Pa can tell you exactly how far you can push that block. He may even be able to point you in a direction towards an aftermarket block.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 400 block B1 build
[Re: Wax]
#2693521
09/01/19 09:14 PM
09/01/19 09:14 PM
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Joined: Aug 2003
Posts: 1,578
KOS
OP
pro stock
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OP
pro stock
Joined: Aug 2003
Posts: 1,578
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B1Johnny- Do they still make the pso heads anymore? Thanks NO ........ I have a killer set of original B1s for sale in the forsale section.....
Last edited by KOS; 09/01/19 09:15 PM.
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Re: 400 block B1 build
[Re: racerx]
#2693557
09/02/19 12:09 AM
09/02/19 12:09 AM
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Joined: Jan 2011
Posts: 682 st.louis,mo.
dart games
mopar
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mopar
Joined: Jan 2011
Posts: 682
st.louis,mo.
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i have a 400 230 block,b-1 originals motor,think its junk,i had better luxk with sr and 440-1 heads,also have a 440 with b-1 heads,cant make either run,if your going to build a 400 stroker,use a later block,same with 440
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Re: 400 block B1 build
[Re: dart games]
#2693561
09/02/19 12:40 AM
09/02/19 12:40 AM
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Joined: Oct 2011
Posts: 326 Alberta
Wookie316
enthusiast
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enthusiast
Joined: Oct 2011
Posts: 326
Alberta
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I run a 530 cast 400/512. It has the center 3 billet mains. I know I am on borrowed time at my power level. Good thing is I have an aftermarket build in the works this winter.
1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.
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Re: 400 block B1 build
[Re: Wookie316]
#2693582
09/02/19 09:08 AM
09/02/19 09:08 AM
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Joined: Aug 2003
Posts: 1,578
KOS
OP
pro stock
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OP
pro stock
Joined: Aug 2003
Posts: 1,578
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I run a 530 cast 400/512. It has the center 3 billet mains. I know I am on borrowed time at my power level. Good thing is I have an aftermarket build in the works this winter. Wookie how many passes so far??
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Re: 400 block B1 build
[Re: KOS]
#2693603
09/02/19 10:56 AM
09/02/19 10:56 AM
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Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
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One thing that has me thinking and scratching me head for an answer is my old 500 cubic inch 440source assembly made 275 passes running 8.60’s (440 block build) before it cracked a block. That was back when every track I ran was running 1/4 mile. Now every track I run in “box class” runs 1/8 mile. The only way I can now make a 1/4 mile pass is test n tune nights. I wonder how long that black CJ would have lasted running 1/8 mile only. Hmmmmm. Having a Keith Black block and a mega block I will never find out but I’m still curious.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: 400 block B1 build
[Re: pittsburghracer]
#2693749
09/02/19 08:14 PM
09/02/19 08:14 PM
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Joined: Oct 2011
Posts: 326 Alberta
Wookie316
enthusiast
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enthusiast
Joined: Oct 2011
Posts: 326
Alberta
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72 this year. So far so good.
1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.
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