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 347 stroker mexican block??

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Str8racn
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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 10:29

BrutalSierra wrote:
I'm in for some pictures.

I will see if I can get over there today and take some. Heads may have already been sent out, but if not I will be sure to take pictures of everything. What a Face
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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 10:36

Str8racn wrote:
Yes it is going to be fun. Hope its nasty when it's all said and done lmao.

Going to start looking at taller hoods also, incase of any clearance issues with the new intake Twisted Evil
Yes, you will need a taller hood. I would put a 1/2" spacer on whatever intake you go with and throw on some tall valve covers while your at it!
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BrutalSierra
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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 11:08

anyone make a good roots style twin screw for the old 5.0?
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Trailer Trash Racer
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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 11:31

I'm with Jay... I definitely like those RPMII's. Without a spacer, you shouldn't really have any severe clearance issues. I know we had to "smooth out" the inner frame thing on a stock hood maybe less than a half inch to work fine. Can't go wrong with an intake that starts to make power at 1500, and with the help of some laughing gas can go up to 6500. That's a great powerband for any type of usage imo.

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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 12:14

BrutalSierra wrote:
anyone make a good roots style twin screw for the old 5.0?
Kenne Belle! I think B&M had one too.
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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 12:26

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Sneaky Snake
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PostSubject: Re: 347 stroker mexican block??   December 28th 2011, 12:38

Oh, and it wasn't B&M i was thinking about. It was a BBK Instacharger. These are old school, but would be baddass to have one now days!
http://www.youtube.com/watch?v=Cl9y3Dc7UA4
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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 10:09

I like that idea lol. Maybe down the road.

Here are some pictures. Not very good ones and the heads are sent out already, so I could not get pictures.







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XplicitPerformance
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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 10:15

stud that thing! those stock main bolts are no bueno!

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Trailer Trash Racer
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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 12:29

I got stock main bolts on mine Smile But mine is no 347 though... Sad

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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 15:46

Can someone please help the less mechanically intelligent please, where are the main studs? The only thing I see are the oil pan screws and the roller rocker arm thingy's. Shocked
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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 16:22

The center ones that hold the crankshaft in place (picture 3).

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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 17:09

what are the numbers on the flywheel? I am curious if its a 28 oz balance or what

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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 17:39

I don't even know if my motor is properly balanced..... ouch.
It was rebuilt back to stock specs, but I bought a new Ford flywheel & Professional Products 50 oz dampner (they suck ass). Well, the new flywheel wouldn't bolt on so I got my old one resurfaced. They only had 28 oz balance prior to '79 if I recall correctly though. Who knows... If it blows, it blows & it'll be an excuse to build something bigger and better lol.

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PostSubject: Re: 347 stroker mexican block??   December 29th 2011, 20:20

yeah most the HO motors were 50oz. Most strokers are 28oz or like mine 0 balance.

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PostSubject: Re: 347 stroker mexican block??   December 30th 2011, 09:36

Trailer Trash Racer wrote:
The center ones that hold the crankshaft in place (picture 3).

Oh ok I always thought studs where for the heads, shows what I know. Thanks
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PostSubject: Re: 347 stroker mexican block??   December 31st 2011, 08:59

FourEyedFan wrote:
Trailer Trash Racer wrote:
The center ones that hold the crankshaft in place (picture 3).

Oh ok I always thought studs where for the heads, shows what I know. Thanks

I will show you what we are talking about when we put your transmission in your 4eyedStang today Twisted Evil
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PostSubject: Re: 347 stroker mexican block??   January 20th 2012, 09:35

That sure looks like a stock 302 shortblock. See if you can find any part numbers or markings on the crank, rods, and pistons. If not, you can use a ruler and a caliper to measure how deep in the bore the piston goes when its at bottom dead center.

Rotate the motor over by hand to get one piston all the way to the bottom. Use a ruler to measure how deep it goes into the cylinder (make a good mark on the ruler that you can measure with a caliper to get an exact measurement). Rotate the motor over again to get that piston back at top dead center and make sure its even with the deck. A 347 ci setup will have a 3.40" stroke, meaning the piston should go down 3.4" from the deck to bottom dead center, a 331 I believe is a 3.25 stroke or something (don't quote me on that, never had a 331). Stock obviously is only a 3" stroke.

Even if you only got a stock shortblock as the others mentioned, the heads/rockers/pushrods were worth what you paid. I'm assuming the 7.20" pushrod is because its a flat tappet motor as trick flow heads with a hydraulic roller normally use 6.70" pushrods. Difference in lifter height I guess.

As mentioned the RPM II, or the Holley Systemax will work best with the twisted wedge heads. My old 347 setup with ported twisted wedges, systemax, and lunati 544/560 cam went 11.15@119 on motor at 3000-3100 lbs.
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