R-100 4X4

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Bout that time ...
 
Today is the start of a long tern project ...

I ran up on a 454 Big Block low mileage motor out of a 1988 motorhome ...
Needed it like I needed another hole in my head, but the deal was too good to pass up ...

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It'll see a tear down and go back together warmed up a tad ...
Block casting numbers are the same as they used in the 1990 454SS trucks.
(Mark IV)

Not going nuts with the build, just a few items will go in/on ...
A alum. dual plane intake, 780 Holley vacuum secondary carb, modest bump stick ...
Going to change out the peanut port heads to 1973 - up 049 oval port heads ..
Might do some port and bowl work to em .. And perhaps larger valves ??
Be super nice to have a set of aluminum heads just for lightening up the motor, dang cast iron heads weigh a ton !
But those don't fit the budget, unfortunately ..

I'm not after a hi-revving motor .. About 5,500 rpms is as far as I would want take it ..
 
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Thanks FDChappie
Been a ongoing project for a few years this time around ..

The 454 motor is a backup motor .. Acquiring parts for it will take awhile to do ..
Already nailed down a set of bare 049 oval port heads ... My plan for them is to oversize the valve heads a little and drop the stem size from 3/8" to 11/32" Some bowl, port and chamber work is in the picture ...
Hadn't took the motor apart just yet, but did pull the oil pan to see if it was a 4 bolt brock or not ..
It was a two bolt .. Kind of glad it was cause if it was a 4 bolt I would be wanting to build it for high revs ...

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Cleaned up fairly nice for 35 year old parts ..
The powder laid down ok, could have netted a better finish if I had spent more time with the prep work ... But being this motor is somewhat of a budget build I blew it off ..

The budget just might go out the window when the order gets placed for the 496 stroker kit !

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4.250" stroke, 0.060" over the stock bore (4.250") of the 454 Rat motor ...

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! .... " OR MORE " .... !
 
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Hoping it'll run as good as it looks .. ??

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Being the motor has low mileage on it decided to get all the needed parts it'll take to install in the truck ..

Stockpiling the parts that will be used in the rebuild, when all are in hand the motor will see a complete tear down ... This will take some time .. Still looking to find a set of 781 heads, once I have them got a world of parts to buy and mega work to do on em before they're ready to bolt on ..
Valves, cam, lifters and springs are in that pile along with cam bearings ...

In the meantime motor will be running as is ...
 
Once I nail down a set of 871 heads got a world of work to do on them and a sack full of parts they will be seeing ...

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Going to take some time (And bucks) before their ready to replace the peanut port heads ...
 
To cold to work ... Burrrrrrrrrr !

Did manage to do some ..

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Three cables are in play, throttle, cruise and TPS ..
Found a aftermarket that got close ..

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Cables worked out well ...

Moving on to another area of the big block motor install ...
Wanted a bigger oil pan than the Oem 5 qt pan the motor came with ... Looked at many aftermarket pans ...

Found a 8 qt aluminum that came from a boat ...

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This puppy is bad-ass ...
 
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