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Post Info TOPIC: 351 clearence and strength


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351 clearence and strength


i was wondering when you bore and stroke a older 351 to a 427 will the crank have any clearence issues??? and how much power could the older block handle???????

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fox mustangs rule! mustang notch 4.6 4 valve


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bump want some help with this

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fox mustangs rule! mustang notch 4.6 4 valve


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The block needs to be clearanced for the crank's stroke by the oil pan rail and sometimes on the bottom of the cylinder skirt sometimes.

The block can be good for 600rwhp-700rwhp depending on block year and how your making the power.

I'd recommend stepping down to a 408/393 for a street motor.




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GTStang wrote:

The block needs to be clearanced for the crank's stroke by the oil pan rail and sometimes on the bottom of the cylinder skirt sometimes.

The block can be good for 600rwhp-700rwhp depending on block year and how your making the power.

I'd recommend stepping down to a 408/393 for a street motor.






alright thank you

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fox mustangs rule! mustang notch 4.6 4 valve


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i got a cheap 351 punched .30 to a 357 older block will handle 700 800 horse block wise. all fresh forged pistons shortblock if your interested

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JDangerous IN GOD WE TRUST, ALL OTHERS PAY CASH!!!!!!


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x2 393 or 408 lose that 427 idea

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  • 1988 LX Notch race car -4.6 dohc ,powerglide ,boost ,cage ,mini tubbed,chute..ect certified to 8.50s ,hoppin low 9s high 8s
  • 2008 GMC Sierra - Daily driver


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5pointslow wrote:

x2 393 or 408 lose that 427 idea





alright ill probably go with a 408 just because a little bit more displacement but ill keep a 427 in the back off my head when i build a crazy motor in the future ya know

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fox mustangs rule! mustang notch 4.6 4 valve


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but um i wanna know if i got 4 bolt mains and gurdel the mains and rocker arms how much horse can it handel?????

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fox mustangs rule! mustang notch 4.6 4 valve


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351 is 2 bolt just do a dss girdle and there good to 650rwhp- 700 i dont think you relize that kinda power is , by the way this is your dailey driver right ? lol i would stop and and say that a few times, i have a shit load invested and i make good money , but honestley you being a freshmen in h.s. and not even a drivers liscence yet .... should you be thinking somthing a little more practicle as a daily driver and this as your toy s to blast around in?

honestly not being a dick how much you gonna gain doin a crazy 427 or a crazy quote on quote 408 im a machnist and used to work building engines i just wanna know the gain...
honestly nothing everything is more money and the gains are minimul , i guess you can say i have a 427 lmao.... i just want to know do you realy know howmuch this cars gonna cost to build ?and you said your a freshman in h.s. and have no liscence or a job ???????

im figuaring mines gonna cost 15 k to give an idea and im 1/2 there ...ill help ya out with anything but man this thing realy should be a toy and not a daily driver im sure your bro will agree ..it sounds like im being a dick and im not just relize what is involved and do it but
its a lot for some one your age mine or a 30 year old lol ya kno but let me kno ho your making out and keep us posted .....





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  • 1988 LX Notch race car -4.6 dohc ,powerglide ,boost ,cage ,mini tubbed,chute..ect certified to 8.50s ,hoppin low 9s high 8s
  • 2008 GMC Sierra - Daily driver


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5pointslow wrote:

351 is 2 bolt just do a dss girdle and there good to 650rwhp- 700 i dont think you relize that kinda power is , by the way this is your dailey driver right ? lol i would stop and and say that a few times, i have a shit load invested and i make good money , but honestley you being a freshmen in h.s. and not even a drivers liscence yet .... should you be thinking somthing a little more practicle as a daily driver and this as your toy s to blast around in?

honestly not being a dick how much you gonna gain doin a crazy 427 or a crazy quote on quote 408 im a machnist and used to work building engines i just wanna know the gain...
honestly nothing everything is more money and the gains are minimul , i guess you can say i have a 427 lmao.... i just want to know do you realy know howmuch this cars gonna cost to build ?and you said your a freshman in h.s. and have no liscence or a job ???????

im figuaring mines gonna cost 15 k to give an idea and im 1/2 there ...ill help ya out with anything but man this thing realy should be a toy and not a daily driver im sure your bro will agree ..it sounds like im being a dick and im not just relize what is involved and do it but
its a lot for some one your age mine or a 30 year old lol ya kno but let me kno ho your making out and keep us posted .....







you dont sound like a dick at all. im gonna do it one step at a time and learn as much as i can ya know. my dads gonna teach me how to drive and controll the car once its finished but he said even before that hes gonna teach how to drive in his 538hp vette and go from there i understand completly what you saying and i respect the fact that you are helping me..its not gonna be daily daily driven only on the nice days ya know its basicly gonna be a toy but on the bad days theres always a bus lol

-- Edited by 91notchback on Monday 20th of April 2009 08:28:50 PM

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fox mustangs rule! mustang notch 4.6 4 valve


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i hear ya just one thing at a time , thats good hes gonna help ya i didnt relize your dad is helping you with the build .... give it hell

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  • 1988 LX Notch race car -4.6 dohc ,powerglide ,boost ,cage ,mini tubbed,chute..ect certified to 8.50s ,hoppin low 9s high 8s
  • 2008 GMC Sierra - Daily driver


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Posts: 2325
Date:

5pointslow wrote:

i hear ya just one thing at a time , thats good hes gonna help ya i didnt relize your dad is helping you with the build .... give it hell





i should of told you that huh i forgot to tell you oops sorry

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fox mustangs rule! mustang notch 4.6 4 valve
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