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build thread III: preassembly, reassembly, paint and . . .

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backpain

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Progress at paint
 

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backpain

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Current paint status
 

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backpain

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Ok, since the “distractions” get more press these days . . . . Covid got me distracted . . ..
 

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No Hay

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I'm down to only one distraction for the dirt. Feeling a little deficient ;D
 

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backpain

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More status pics.

Now getting deep into the engine and tranny/xfer case assessment. All worked when the project started . . . . .. but it has been quite a few years. May need to bench dyno the engine to be sure. Fingers crossed that underneath the valve covers and oil pan(s) everything will look good. Crossing more fingers and knocking on wood :)
 

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marjama

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Looking good backpain! I know how the distractions can slow a Bronco project. I'm always glad to see people reappear and keep going on their projects!
 
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backpain

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So, cyl. heads on the "new" motor (2010 build, sat around for 10 yrs) are trash (at a minimum need to be disassembled, hot tanked, rebuilt). Compression is not ideal in at least one cylinder. Can't determine whether it's rings or valves or _____ until the heads come off.

Best case - bolt new aluminum heads to existing 347 forged stroker motor

Worst case - new heads and rebuild the short block, reusing crank and . . . .

More fun worst case - start from ground up. Problem is, stuck with 302 /8.2" deck platform unless/until I identify, in great detail what will need to change to fit a 351 in this modified build.

In true Backpain form, doing it all backwards, again. Engine bay is pristine and painted. New fab work on inner fenders and rad support are not an option.

Would love to drop in a 351W based engine, but may just be stuck building another 302 stroker . . . . .

Should have predicted this and built a mild 408 and worked out fitment issues before paint. A complete Coyote motor and controls would be cheaper at this point, but the fitment fab is a no go this late in the game.

Now: Boss 302/Dart/World Products heavy duty block, 10:1+, push the limits of a 347-363 . . . . . Totally doable, but please, please talk me out of this rabbit hole :)

PS - somewhere in there, yet another dirt bike got added to the mix. Simply out of control. Out of control.
 
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backpain

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Due to Covid shortages and lack of patience, we rebuilt the existing motor. Pictures soon. . . .

Currently rebuilding the driveshafts.

Question: are the >500hp/tq guys getting away with stock driveshafts and only updated (31 spline or whatever) axles? Are the stock driveshafts a weak point? (before I spend the $$ making them "like new")
 
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backpain

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Oct 2, 2007
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Updates:

Driveshafts refurb'd. (re: question above - Too late :). I'll probably never put a bigger motor in here anyway?)

Engine, trans and Xfer case back between the frame rails.

I, know, I know, everyone loves the new wheel/tire combo ;)
 

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jmhend

Bronco Guru
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Dec 25, 2007
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Updates:

Driveshafts refurb'd. (re: question above - Too late :). I'll probably never put a bigger motor in here anyway?)

Engine, trans and Xfer case back between the frame rails.

I, know, I know, everyone loves the new wheel/tire combo ;)

Looks great. Your almost there.
 
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