351W vs 460 *Production blocks*

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351W vs 460 *Production blocks*

Post  Andre.servin on November 6th 2015, 7:33 pm

I did a search on here using 351 vs 460, 351W vs 460, even just 351 and got nothing... So if I missed it and I can imagine this has been asked a lot, sorry!  

I'm building my 68 mustang into a drag car. I can't decide on what engine to use. At heart I want to use a 460 because it makes sense to use a 460 because it's a big block, and you know the old saying "no replacement for displacement".

Then I think of the 351w, it's bigger than a 302 and its lighter than a 460.

I'm not to familiar with either engine. My 70 Torino has a 460 in it but I'm still building it so I haven't driven it yet.

My 68 mustang currently has a 302 in it. I hear the production blocks are limited to the 500hp range.

I'm limiting my selection to production blocks. Simply due to the fact that I don't have a ton of money to drop on an aftermarket block. I would rather pull a production block from the junkyard, rebuild it with forged Pistons and nitrous. Maybe build a stroker. I can stretch 2k more on parts then just a spending it on a block alone. That will be the goal some day but, right now is my introduction to drag racing.

Thanks!!

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Re: 351W vs 460 *Production blocks*

Post  rmcomprandy on November 6th 2015, 7:50 pm

If you are asking about block strength and power capability there is no contest ... the 385 big block series for sure.

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Re: 351W vs 460 *Production blocks*

Post  Andre.servin on November 6th 2015, 10:18 pm

Okay cool that's good to know. So the 385 series....

Yea I was mainly referring to max hp levels and torque, as well as engine strength.

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Re: 351W vs 460 *Production blocks*

Post  Andre.servin on November 6th 2015, 11:24 pm

Does anyone know max block hp level? Production block

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Re: 351W vs 460 *Production blocks*

Post  cool40 on November 6th 2015, 11:42 pm

Andre.servin wrote:Does anyone know max block hp level? Production block
I've made over 800 hp with a 2 bolt d0ve-A block.
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Re: 351W vs 460 *Production blocks*

Post  rmcomprandy on November 7th 2015, 12:21 am

cool40 wrote:
Andre.servin wrote:Does anyone know max block hp level? Production block
I've made over 800 hp with a 2 bolt d0ve-A block.

YEP ... I have gotten to well over 900 horsepower with a 501" engine using A-heads and a tunnel ram going to 8,800 RPM; I would have used a better block for that customer but, rules required an "O.E.M. mass production block"; no matter what the brand.

A 2 bolt block with half filled water jackets.

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Re: 351W vs 460 *Production blocks*

Post  gmsmkr on November 7th 2015, 12:33 am

We have made almost 700hp on a stock 351w block with lots of time in it....the big block will take alot more power with out all the block prep and be cheaper than a small block to make the same power
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Re: 351W vs 460 *Production blocks*

Post  Andre.servin on November 7th 2015, 1:57 am

Cool sounds great! Thanks! 460 it is!

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Re: 351W vs 460 *Production blocks*

Post  kim on November 7th 2015, 2:36 pm

Take your stock block and add a 4.5" stroke crank.  Lower crank rpm, but definatly going to do more than you could have done with a 408 stroker kit in the 351w block.

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Re: 351W vs 460 *Production blocks*

Post  Andre.servin on November 7th 2015, 6:31 pm

What does that stroke it out too?

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Re: 351W vs 460 *Production blocks*

Post  kim on November 7th 2015, 6:53 pm

545 cu in in stock bore,  or 552 with a .060 over bore stock block.

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