LS1 >> LS6 in a FSJ ?

FSJer

curious if anyone has dropped in an LS into a FSJ or any jeep to that matter. I have a AMC 360 , have to spend some serious $$$ to get some good TQ & HP out of it , LS1's are really cheap here in Australia , plus they are all alloy , most of them ( think the 6.0ltr version is cast iron block ) and they can put out good power, for the money the LS1 stands out . how would i adapt it to fit a TF 727 tranny that is bolted to a NP 208 , or should i scrap the 727 in favour of a GM based tranny ?

Lifted79CJ7

If you are gonig to swap in an LS engine, might as well make it easy and swap in a GM drivetrain. GO AMC!!!

FSJer

whats the point going with AMC , fair enough for the die hard enthusiast , but it is hard to get parts for them , plus expensive . there are other better alternatives around , even the new V8 Hemi out now ( might have to wait a few years for prices to come down ) , the motor is not the car , small part of it . what does everyone else think bout this , most people here die hard AMCer's ?????

Lifted79CJ7

I hear ya, I'm just bustin' your balls. I say if you are going to do it, do something cool, and I think an LS1 or LS6 are more than cool enough of a motor to drop in. Now if you said you were going to drop in a crappy 305, I might have to bust your balls some more. Anywho, whatever you decide on, I say post plenty of pics for us! Shoo, might as well add on a supercharger on it while your at it! :wink:

Dusty

http://cgi.ebay.com/ebaymotors/360-AMC-Jeep-Street-Off-Road-Engine-kit-1970-93_W0QQcmdZViewItemQQcategoryZ33620QQitemZ7995695215QQrdZ1

$449 for a complete 360 rebuild kit 9:1 compression ratio IIRC other wise Forged pistons are 6 bills or stuff the 343 pistons in there and you'll have 10.5:1

I would think to Look for a Cam with a slightly wider lobe seperation 112-116, and around the duration @210-220 @ .50 and close to .480-.500 lift. even with stock compression so there is an Extra $150 so have Howards or someone grind one

I dont know what your hook up is for rebuilt heads but my last set was $700 done springs, keepers, locks and seals with reground seats and replaced valves where needed

Air Gap intake is $240
HEI distributor (if you dont have one) can be had for $250

Throttle body injection can be had for $1200

With 9:1 compression a cam somewhere in the middle of that suggested range and the few other parts your rebuild will cost you $1300 Block Machine work probably $500 so you are in it $1800 mark Add in the intake and the Distributor (dont know what you have fo r a carb) you will be able to count on a 350/360 hp 400 ft/lbs animal that bolts back in for right at $2300. Add FI later on for the 1200 and now for 3500 you are up and running. there are cheaper ways to do it, typically to rebuild a chevy SB it costs me within $200 of what an AMC costs me and i get he same HP numbers out of either engine. I get tired of swaps its not a die hard thing like i make it sound sometimes.

The LS motors are great but i usually get fed up with the transmission headaches, t-case, starter clearance, new exhaust, new motor mounts and getting the damn headers ordered right so i have a set that will clear enverything on the way down. Then with the LS's are the wiring woes. the TBI conversion is cheap and only has a handful of wires that you have to mess with

After stuffing a 454 into a Wagoneer, we paid $2200 for with 30k miles on it, then wiring the MPFI in. Getting a rebuilt T400 that would bolt up and t-case was another $1300 done with some bells, the T400 for a GM didnt exactly bolt up to the QT and i didnt want it to so a 208 was used which required new drivelines at $175 an end ($350total), Radiator was $350, then we had to battle motor mounts and tranny crossmember, hoses, AC stuff and misc parts tallied in around $700 and a new exhaust system ran me $500. Dont forget that you have to drop the fuel tank and add the fuel pump ($100) but we wont count that since it also applied for the TBI conversion.

All tallied, steel, motor mounts, said and done on the road it cost close to $5400 to do it and do it right the tranny swap and t-case swap were what killed the deal. power was nice though but what really drove that guy nutz was i built a 360 (just like i suggested above) not too long after that didnt have MPFI only had a carb but pulled the hills with a loaded trailer just as well as his did and got about the same mileage and was pretty close to as snappy.

Just food for thought

Im with Jack though i hear ya, just wanted to throw this stuff back at you because saying it costs a fortune to rebuild a 360 isnt as bad as many machine shops make it sound

Lifted79CJ7

I'm with Dusty, I guess my lack of knowledge comes in the fact of I don't know how much of what you have Down Under. I would imagine that a lot of the parts are made in the US (for AMC), compared to Chevy parts probably being more prevalent over in Aussie World. So Dusty, you have pics of the 454 in the Jeep??? Sounds like a killer setup!!

Dusty

Done in 98, i didnt even get a digital camera till 2002

eight

5.3s sell for $1000 with all computer/sensors/wireing in College Station. There's a whole bunch of them, most people are scared of the wires, and they're ugly. Watch for someone trying to sell you a 4.8 as a 5.3, they're externally identical, same block, 4.8 has flat pistons, 5.3 has a small dish to one side.

FSJer

one problem here in OZ , no one , no shop i know of and i have rang around Australia, sells gear for AMC V8's , they all say , "you have to get the stuff shipped from the states" , as far as LS1's and the like , they're everywhere , they are in Holdens ( aussie GM company ), fords are plentyfull too , heaps of those ford 5.4ltr quad cammers around - these are in the aussie ford high spec model sedans, seen a few of those new 5.7 hemis around ( 8-11 grand new- out of my league) looks like i'll stick with the AMC 360 for the money( Which will cost double of that in the USA -in shipping , frieght & Tax)and get all the stuff i need shipped from the "land of the many states" , and help pay for the pumping of all that water in Lousianna after that Big storm( if spelt right or right place). cheers rick

tarior

FSJer wrote
looks like i'll stick with the AMC 360 for the money( Which will cost double of that in the USA -in shipping , frieght & Tax)and get all the stuff i need shipped from the "land of the many states" , and help pay for the pumping of all that water in Lousianna after that Big storm( if spelt right or right place).

cheers
rick

=D> :lo1l: