71 Boss 351 NHRA clone

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bill diehl

Well-known member
Joined
Dec 10, 2013
Messages
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Location
atlanta ga
My Car
71 mustang
start here

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IMG_0143.jpgsandblasting


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IMG_0150.jpgAfter much thought I am going to build new torqueboxes, leafspring mounts out of 4130 material


IMG_0082.jpgXE block




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351 intake cut bowl.jpg

NHRA Stock rules dictate no grinding and ports must hold factory spec volume. We installed .375 deep seats with a bowl cut and .500 bronze guides. with the proper valve job these heads will flow 300-325 cfm at .502 (the max lift allowed)

nothing else comes close


The dogbone lifter plate in the other earlier pic is to mock up for the custom made 42/46 lifter phasing. this allows the geometry to be proper for the Cleveland head to operate at extreme rpm.

No I can't use dogbone roller lifters, I am restricted to flat tappets, so we have tool steel dlc coated light lifters for the project

 
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Mmmmm.... XE block = hen's tooth.

Sweet ::thumb::

 
IMG_0154.jpgMock up floor (not correct) but sure is pretty than rust, Going to see how I can get the SFI 25.5B spec chassis (for future HP) in, around or under without cutting everything up and making big mess


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IMG_0157.jpgI am not happy how the new cowl fits existing firewall (I like the cowl) but the 40+ year old firewall seen better days.....I guess I will have to pony up for a new dynacorn firewall now



Mmmmm.... XE block = hen's tooth.

Sweet ::thumb::
like finding a needle in a haystack..

photo 6.JPG

 
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lots of work there but it will be nice to see anther 71-73 t the drag track

 
Thanks Guys......every piece on the car will be tig welded together, I want it to be a "one of a kind". no spot weld and no mig welds

 
Where did u get the full floor? Dynacorn? My floor is rusty so I might go full like you did. Looks good!
That is a 65 thru 70 floor...not factory correct, but it does look better than rust or a patchjob. The only "problem" is half of the front ribs (under your feet) are on top of the front floor supports. In my case I removed the floor supports as I will be using 1-5/8x .083 round moly for a "frame" under the floor.

Dynacorn is supposed to be out with the 71-73 1-piece floors soon

Also, I do prefer the 1 piece floor, when its all said and done and people look under it when they checking out your work you will be pleased with there comments.


IMG_0162.jpgGot this from CJ


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They make the engine cross member now..?!?! Sweet! Nice job on the car. Taking notes for mine.
yes they do, just came out maybe month or so ago.

Mine was all beat up as is the strut rod crossmember too, from the prior owner.....my original plan was to build another crossmember and ad clearance for the pan, but NHRA stock rules dictate stock pan....then dyncorn came out with this and the rest is history....even though its going to be a drag car I want it to be like a "show" car as correct as possible.

 
IMG_0191.jpgIMG_0192.jpg1 more day of blasting should do it...I am to old and getting tired of rolling around on the concrete eating sand...but, got to do it right
 
Very nice Bill. Will this be a competitive stocker? I've been working as a crew member on a friends 72 E/S 351c H.O. Mustang for a few years now.
yes, we will have very good power. I will bring it out in C/S to start with. I have an approval for the 25.5B frame/cage for future HP upgrades, but I am still working on a manifold, they shot down the BT because of the notch in the plenum.

I have no interest in bracket racing, (which is basically what S/SS is) this is being done for one thing and one thing only...to set records and prove a point, after I visit the barn a few times and hurt some feelings we will pull the motor and put the big power in it..LOL

 
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