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  #16 (permalink)  
Old 06-15-2019, 10:02 AM
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I been on there sites but thanks

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  #17 (permalink)  
Old 06-15-2019, 10:30 AM
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Locating a rebuildable 360 ANC core and rebuilding that is probably going to be the most economical. Probably close to the same as rebuilding the 304, but with a lot better power potential and street manners.
LS swap is going to get you on all the little modifications, wiring, fabrication to get it all working, not the initial motor purchase price.

The 360 just drops right in place of the 304, wires connect right up, trans hooks up and will be much easier to upgrade to a better manual trans when it does blow up.
360 seems like more money up front on the rebuild, but no real expense after that, it bolts right in.

Or you find another used AMC V8 engine of any size in good enough shape to just clean-up, re-gasket, and toss it in....this will be the cheapest route

Rear axle should be the AMC Model 20, which is fairly stout, close to 12 bolt Chevy territory and at least 8.5" Chevy 10-bolt strength. It will have 2.87 gears and may well have a limited slip in it.

If you do go LS, even the little 4.8 nearly doubles the factory HP of the 304, and a 5.3 easily doubles it.
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Old 06-15-2019, 01:07 PM
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Whatever you wind up doing, please throw some updates out on this Small, lightweight, pre 2000 US chassis are rare. Would love to see the final result. Also, don't discount what can be done with a NA truck motor. 6.0's can easily put down 450 (400whp) NA with headers and cam. 400hp i n a little car is beyond fun.

edit : where are you located
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Old 06-15-2019, 01:41 PM
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Decent 304's can be found in the Jeep CJ crowds. The 304 was an emissions engine. The 360 and 401 were performers kept to the big Wagoneers after the gas crunch. A rebuilt 360 goes for about $2,500. Engine for a '79-'91 Grand Wagoneer will get you a 360 pretty easy
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Old 06-15-2019, 02:53 PM
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5.3 are easy to find between 400.00 to 550.00 with all of it ecm wire harness all the parts you need found a nice 4l60e transmission my friend has done couple LS swaps and he loves it

I can sell the 4 speed and the new set of headers from my car that will help some
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Old 06-15-2019, 03:39 PM
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The truck L series engines have a tall intake manifold that may require cutting the hood and they have a deep oil pan that will give you ground clearance issues. That's why I recommended the LS1 from an F body.
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Old 06-15-2019, 07:24 PM
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Ok thanks for the info
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Old 06-16-2019, 05:23 AM
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https://www.google.com/search?q=Book...hrome&ie=UTF-8

Click on above. Get one of these books on LS Swaps. Lots of good info. Also check out sites below:

https://www.google.com/search?q=LS1+...hrome&ie=UTF-8

Last edited by '48 Austin; 06-16-2019 at 05:46 AM.
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Old 06-16-2019, 06:12 AM
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See pics. Here's my LS1 from 2000 F Body With a Tremec 5 speed in a '48 Austin A40, that I'm finishing up. Small car and lots of challenges. I narrowed an aftermarket Mustang II IFS 8 3/8" and spaced the water pump forward 1.5" so I could move accessories inboard to clear tilt nose with inner fender wells. It all fits with AC, EPS, firewall mounted PB, and hydraulic clutch with fire wall mounted master cylinder. The rear is now a narrowed Ford 8.8 Limited slip with triangulated 4 link and coil overs. The frame is completely hand made and the only body panels untouched is the roof skin and the trunk skin. Lots of work. With the tilt nose it's as easy to work on as a dragster. Can't wait to drive it. This is my retirement project soon to be finished. This car is only 100" wheel base and is smaller and narrower up front than your AMC Spirit. Have fun.
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Last edited by '48 Austin; 06-16-2019 at 06:20 AM.
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Old 06-16-2019, 02:02 PM
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I might be better off going with a 318 magnum and 500 over drive I have done a 360 magnum and a 518 overdrive before made my own wire harness for that one
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