1969 S/S AMX DRIVE LINE:

AMC390 STOCK BORE/STROKE.

12.75:1C/R.

295*DUR.580LIFT.

CROSSRAM INTAKE.

2-900CFM 4BBL HOLLEY TBI'S.

STOCK S/S 390 HEAD'S PORTED.

STOCK AMC HEADER'S.

STAGE 2 CLUTCH CLOSE RATIO 4SPD.

AMC20 DIFF,4.44:1 GEARS.

BEST E/T:
9.63@143MPH 1.352-60FT.

Tha is a from early 90's guy's 4bbl holley 650cfm Holley's way under CFMed that engine was.....60's technology.......ya know......

 

S/S AMX.

 

NOW PICTURE ALL OF THIS HIDEN UNDER THAT HOOD^^^

1969 S/S AMX DRIVE LINE BUILD:

ENGINE:
390AMC bord .040 over, 9.2:1 c/r, Dual procharger’s with crossram intake, Indy racing head's, 307*Dur.675Lift cam, 2-900Cfm 4bbl Holley TBI's.

EXHAUST:
1-5/8” headers
Side pipes.

TRANSMISSION:
Stage3 Clutch, close ratio 4spd.

DIFF/RATIO:
AMC20 rear-end 4.44:1 gear's.

TIRES/WHEELS:
28X12R15's in the rear.28"tall.TORQUE THRUST D'S 15X8.5.

245/50R15's in the front.25.5"tall.TORQUE THRUST D'S 15X8.5


ESTAMATED E/T:

9.20'S-9.40'S

 

Do you have a better engine picture(larger)? Looks like it has two holley carbs on it not tbi.

Steve

 

I was thinking the same thing. TBI units are wider than that and those look pretty tall without any vacuum lines running out of them.

 

What are you using to manage the fuel injection?

 

Oohhh...ooohhh...me, me!!! I wanna see the stock AMC 390 that has twin TBI's on it and runs 9 sec 1/4 mile times!!! I can't see the pics!!! Dammit!!!
Where did you get the dual-4bbl intake for the dual TB's? I haven't seen a dual manifold for an AMC V8 in a LONG time. Is it an Offy manifold?
Yeah...how are you controlling the EFI? It seems like you would have to be using two ECMs and two sets of sensors. What is feeding the signals to the EST? Did you wire up two GM modules to the AMC/Ford distributor? How did you get all that stuff to synch up? I know that synching dual carbs is a beotch to say the least. Did you do the AMC V8 oil bypass trick to feed #7/8 rods and the rear main?
My AMC 360 heads are identical to yours with the 319xxxx casting numbers...gasket matched/ported/polished/deshrouded/etc...with a gasket matched Edelbrock Performer AMC intake. The 319xxxx heads were the ones used on the 401's too and they were capable of some really amazing flow numbers.
Email me pics, PLEASE!!!! I am interested in your buildup.
EDIT: Wouldn't a 0.040" overbore put you damn near a 401 displacement?

 

OOOOp's my bad
T thought I sad thats was from when it was carbbed guy??

But looking back i guess i didn't.........

that was back whne it was running them 650Cfm holey's only pulling 9.80's.........

I'll have to see what i did with the EFI/TBI shot's my I'm sorry....

 

Jeepguy man that is Just an S/S AMX 390crossram nothing specail. the Commader 950 Holley bolt's right 4bbl carb intake's.
I put a 0.75" think spacer on them any way.......

The crossram from old AMC super stock's???
You telling me you Don't remember the s/s's???

 

pffy dose make a 4x2 Intake a front to rear tho not the crossram..

 

Here's my email address:
kgaines@kestrel.tamucc.edu
I'd love to see an AMC V8 built up like that. I'm not throwing a flag...I am sincerely interested in what you have done. I just got a GM TBI system to work on my AMC 360 (see my sig for a description) in a 1980 Jeep CJ-7. I got the fuel pump wired today and started testing circuits so that I know it'll all work when I fire it off the first time. All I am waiting for in an Accel ignition adapter harness for the Accel 300+ ignition box to wore to the GM ECM and the Accel coil.
BTW...PLEASE tell me you weren't running twin Holley 4160's on that engine. AMC V8's don't like 4160 carbs for some reason. I burned up a bunch of valves with ONE 4160 carb.
EDIT: I remember the AMX's. Beautiful machines!!! I'd love to have one for a future project, but I am a poor grad student that can barely afford the Jeep...much less an AMX...as a project. The Jeep was running okay with Holley ProJection, but it burned up 2 ECU's for no apparent reason (checked wiring thoroughly) and I got sick of tuning the damn things...so I installed a GM system on the 360. It should be enough to propel that Jeep at some pretty insane speeds. The 360 would move that Jeep at about 120mph with a 2150 (2V) carb on it. I can not wait to see what a nicely tuned GM TBI will do for it.

 

AMC should run awsome on a GM TBI I used the holley comander950 setup on mine........

I just Miss Marked my pic's is All i Have to do is find what i did with the TBI pic's.......

yeah we went from barly running 9.80's with them catb's and Dropped in ti the mid 9.60's with just giving the 390 a bunch more CFM.......

P.S.

YA FORGOT TO TURN YOUR SIG ON GUY.........

 

I think it got tunred off when I edited the post...here ya go
1979 AMC 360, +0.030" bore (about 370cid)
Edelbrock Performer AMC intake (gasket matched)
Summit Racing cam 272/288 adv dur, .472/.496 lift at valve
Heads (319xxxx) ported/polished/gasket matched/deshrouded/etc.
Accel 300+ Digital Racing Ignition (CD) with 48000 volt Accel CDI coil 140019, Accel 300+ racing plug wires and NGK plugs
GM TBI from 1990 Chev Caprice Police Cruiser (9C1 Engine package)
TF727 transmission set for "KILL" with cast iron Dana 300 transfer case
3" Rear CV driveshaft
Ford 9" Rear axle, Dana 30 front axle (POS, I know)
33" tires
4-link front and rear suspension in the works
Lots more cool Jeep stuff to come. I didn't mention all the Jeep goodies because they aren't really relevant to this post, but there is a LOT of stuff on this Jeep that didn't come from the factory in 1980. It'll whoop a Rustang and run over it after the race...no problem.

 

awsome setup guy that 360 should kick Nicely......

 

With 10:1 compression, it is dyno'd at about 390hp. That was with the ProJection. If I can tune the GM system the way I want to tune it, 400 hp shouldn't be a problem...esp if I can get the Holley 670 TB for it. Like I said, whooping Rustangs is a lot of fun in a 2500-pound Jeep that is 25 years old. If it were legal, I'd put some rubber on their roof too. With the 4-link suspension, I should be able to put a lot more power to the ground at all 4 corners, then it might jump itself off the ground.
AMC V8's are the engines that time forgot about. Power and torque all in one package. The awesome 401 was the granddaddy of all big-block displacement engines. I kick myself in the *** for not buying that 401 I had my hands on in Aransas Pass, TX of all places.

 

Hell yes man Not so sure on the 401's stock they was the smog engine's.

But 390V.S 401 stock for stock 390 was faster........

But Built they Ran about the same somtime's the 401 came out faster in Modded out form.........

But a 360AMC is fine Fine Engine.

 

401's had smog? I thought that the 401's were made AND discontinued before smog crap was required. In the early 1970's, the AMC V8's were in theri prime and that was before smog equipment bcame a requirement...wasn't it? An OEM 401 properly tuned was capable of 1 HP/cube. Now, in 2003/2004, a well built 360 can easily top that with the smog crap amputated. That 390 of yours should be well in the 400's in HP...what's it running...475 HP or more? Mine dyno's at 381 HP (5500rpm) and 400 lb-ft of torque (4500rpm) at the flywheel. I have twisted several OEM Jeep rear driveshafts and I have broken a front driveshaft in half...yet to be replaced because I don't have the $$ to replace it with a shaft that will clear my tranny AND handle the torque I can muster in 4WD LOW. The rear driveshaft is 22 and 3/4" long and 3" in diameter with a CV joint at the transfer case end. It cost me $270 here in Corpus Christi. The front driveshaft is going to have to be a 2-piece shaft to clear the tranny pan and still be no less than 2.5" in diameter to handle that kind of grunt in 4WD LOW (4:1 reduction in the transfer case). I have also converted my transfer case to a twin-stick design so that I can run each axle separately...in other words, I can run each axle in any ratio I want...2WD (front or rear, HIGH or LOW) or 4WD HIGH or LOW. I can also run the engine alone for the on-board (engine driven) air compressor to run air tools like an impact wrench or to air up tires. My next trick is an engine-driven welder...after the 4-link set-up is finished.

 

I never Dynoed the old set up but i was told it was about 490-510hp. with plenty of torque to back it up.......

but i think Back in the Day when it ran the 9.80's then into the TBI stage where it dropped to 9.60's i think car was more gear then power tho......I mean 4.44:1 gear's 28 inch tall tire's with a 4spd......... but it did have a lot of engine power but I bet the new setup will have way more power......

I'm guessing about 680hp-720hp.

and 580TQ-640TQ.

It should run a fully dressed AMX In the 9.20's-9.40's.

The 390 was the big power king of AMC's the 401 was the smog Engime they thought iwth the 401 they could meet ennission's and run as fast as the 390 but it didn't work.401 was 1970+
Most of 70's 401's went in jepp's But a few went in AMX's.

some of the 1970 S/S AMX's got the 401's But they still ran low 11's high-mid 10's just like the 390's.
the 401 had a fast 1/8th miles tho.....

 

Holy ****!!!!

I'll definitely give you this one. Most 401's I have seen went in early 70's Waggies and Cherokees as towing packages. They were never meant to be engines that could move a 6000-pound Waggy at 200 mph. Put one of 'em in an AMX or (Gawd forbid) a Gremlin and hell would freeze over. I have seen a Gremlin with a 360 in it and you wouldn't believe how fast it was...JEEZ!!! I'd still like ot get one in a Jeep. A friend of mine here in Corpus Christi actually put one on a CJ-5 with an AMC-version TH400 behind it. I never saw it run, but I am sure it would have chewed mine up...and my Jeep is a fast mo fo. Ask some of the ****-burning kids here in Rockport if they have been smoked by the turquiose Jeep...then watch the BS start to pile up.

Damn right they did...look at the torque an engine like that could produce off the line with a bore and stroke like that!