400hp engine swap? purists skip this thread.. - Defender Source
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  #1  
Old January 29th, 2012, 04:06 PM
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400hp engine swap? purists skip this thread..

Well the 350 crate motor is getting tired. Runs fine but she doesnt pull the truck or spin the tires like it should...

I was offered a great deal on a heavily built Chevy 355 (actually traded for a firearm). It puts outs out approx 400hp/400ftlbs now Ive got a feeling this is going to be serious overkill and I may miss the tame 350. The other question is winter romp is only 2 weeks away. A friend has generously offered his heated barn to do the swap but Im not sure if Im crazy to cut it so close....stay tuned. Pulling the motor tomorrow.. More pics to come.
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  #2  
Old January 29th, 2012, 06:56 PM
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ed angel
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No way! not crazy that thing will be awsome!! DO IT......


Your truck rocks and deserves this heart transplant!
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  #3  
Old January 29th, 2012, 07:34 PM
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Whatcha waitin for boy...stop typin and start wrenchin...
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  #4  
Old January 29th, 2012, 07:43 PM
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Wait until after winter romp. Two weeks is too close
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #5  
Old January 29th, 2012, 08:17 PM
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Originally Posted by bjf View Post
Wait until after winter romp. Two weeks is too close
too late... she goes under the knife tomorrow. Just dropped it off at my friends barn. If these guys can do it in 32 mins Ive got to be able to do it in two weeks.

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  #6  
Old January 29th, 2012, 08:25 PM
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Why not stroke it to 383? It's a proven and common mod. Longer stroke will give you more low end poop. A short runner intake manifold will help too
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  #7  
Old January 29th, 2012, 08:32 PM
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I dont have time to mess with swapping out the crank right now. I had put a 383 stroker in my Fj40 and I loved that motor. This should be a huge improvement over what i have in there.
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  #8  
Old January 29th, 2012, 09:14 PM
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Its got a decent sized cam but Im actually going to have to pull those valve covers and put on short ones. Ive got zero clearance with the compressor and alternators literally resting on the valve covers. I think ill have clearance for the manifold but its possible that will have to get swapped also.
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  #9  
Old January 29th, 2012, 09:43 PM
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You could be right on both counts. Ill have a better idea when I get into it tomorrow. I do think i have clearance on the air cleaner but the valve covers could be an issue.
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  #10  
Old January 30th, 2012, 07:04 AM
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You don't need no stinking bonnet. It's the romp. just run it. OR.....I have a spare SI bonnet we can "clearance" or stick a hood scoop from Pep Boys on it LOL.

I assume it is ON at the Vail compound?
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

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  #11  
Old January 30th, 2012, 07:54 AM
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A cowl induction series hood would be appropriate.
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  #12  
Old January 30th, 2012, 10:56 AM
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Edit: Nevermind. I had a frozen brain moment. The Edelbrock is a Q-jet.
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  #13  
Old January 30th, 2012, 02:25 PM
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Motor is out and ready for tear down.
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  #14  
Old January 30th, 2012, 05:35 PM
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Quote:
Originally Posted by phoenix37 View Post
Its got a decent sized cam but Im actually going to have to pull those valve covers and put on short ones. Ive got zero clearance with the compressor and alternators literally resting on the valve covers. I think ill have clearance for the manifold but its possible that will have to get swapped also.
Solid lifter cam?, (or were the thumb screw VC bolts just some bling added by PO?)
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  #15  
Old January 30th, 2012, 05:56 PM
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Quote:
Originally Posted by junkyddog11 View Post
You don't need no stinking bonnet. It's the romp. just run it. OR.....I have a spare SI bonnet we can "clearance" or stick a hood scoop from Pep Boys on it LOL.

I assume it is ON at the Vail compound?

Can you imagine the snickers if I showed up with a hood scoop and lopey idle?! Yes the Vail compound which is like Rover nirvana. Im ready to move in! Working in a heated space with all the tools and toys at your finger tips is amazing. Thanks Bob!

Got the motor out without too much difficulty. Thanks to Jeff for all his help. We didnt break any speed records but got it out.. Ill start swapping parts over to the new motor tonight. New clutch kit is on the way. Hope to have it in by the weekend.
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  #16  
Old January 30th, 2012, 06:37 PM
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Quote:
Originally Posted by phoenix37 View Post
Can you imagine the snickers if I showed up with a hood scoop and lopey idle?! Yes the Vail compound which is like Rover nirvana. Im ready to move in! Working in a heated space with all the tools and toys at your finger tips is amazing. Thanks Bob!

Got the motor out without too much difficulty. Thanks to Jeff for all his help. We didnt break any speed records but got it out.. Ill start swapping parts over to the new motor tonight. New clutch kit is on the way. Hope to have it in by the weekend.

Hey, don't scratch my lightweight, I just had it detailed!
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  #17  
Old January 30th, 2012, 06:39 PM
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and a very nice detail job it is indeed. Dont worry your Dad made sure to put his truck in between in case there was any shrapnel! Where is your build thread?
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  #18  
Old January 31st, 2012, 07:36 AM
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Nate is building a very cool Lightweight but Ill leave it to him to post pics. Amazing this motor fit in an S1.
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  #19  
Old January 31st, 2012, 09:41 PM
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Quote:
Originally Posted by JSBriggs View Post
And speaking of pics...what happened to Jeff getting pics of the various cool trucks from the RN catalog pg 20-21 spread?
x2...
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  #20  
Old February 3rd, 2012, 06:32 PM
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So are you guys doing hot laps with this thing yet?
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