more casting numbers

fuzz401

Casting # C.I. Year Stroke 8120510 401 72 3.680" 4488664 401 71 3.680" 4487238 390 70 3.574" 3208795 390 68-69 3.574" Engine: Code: Comments: 290-2V H Na 290-4V N Na 304-2V H Na 343-2V S Na 343-4V Z Na 360-2V N Na 360-4V P Na 390-4V W 1968-69 390-4V X 1970 390-4V Y SS,AMX & Machine 401-4V Z Na * The seventh digit of the vehicle identification number indicates the type of engine used in that model. The number is located on the left front door panel or the upper left corner of the instrument panel. Engine Specifications CI Bore Stroke Firing Order Distributor Rotation 304 3.750 3.438 1-8-4-3-6-5-7-2 CW 360 4.078 3.348 1-8-4-3-6-5-7-2 CW 390 4.172 3.570 1-8-4-3-6-5-7-2 CW 401 4.170 3.680 1-8-4-3-6-5-7-2 CW AMC Block Casting Numbers Year: C.I. Casting # 69 290 4486278 70-72 304 4487211 69 343 4486279 70-72 360 4487212 70 360 4487212 68-69 390 4486280 70 390 4487213 71-72 401 4488874 Click Here For More Block Casting Numbers Engine Size & Maximum Recommended Over-Bore 290 & 304 343 & 360 360 SPL 390 & 401 0.1250" 0.0450" 0.1075" 0.0225" * All AMC Blocks Are Basically The Same In Design. The Major Difference Among The AMC Blocks Are The Bore Diameters And The Deck Heights. 1970-72 Blocks Have A Deck Height Of 9.208". 1966-69 Blocks Have A Deck Height Of 9.175". Push Rod Lengths Also Differ Between The 71-72 And 69-70 Models, So Make Sure You Choose The Corresponding Parts. AMC Torque Command is for the most part a "904" and 727 Torqueflite with an American Motors bellhousing. This unit is a good performance transmssion as well as the GM T-400 version with the AMC bellhousing. both are one-peice aluminum transmissions. The bellhousings are not removable. Four Speed The Super T-10 was produced with many different gear ratios and more improvements for strenth and reliability. The first design had case flexing problems, so the second design case was made of nodular iron with a side cover made of cast iron. The tailshaft extention was made of aluminum and the mainshaft and input shaft diameter was increased for greater torque capacity. The input shaft and the mainshaft have more splines, which help fight shaft twisting. These boxes also have wide cut, course pitch gears for greater strength. The second design Super T-10 became standard equipment in AMC, Ford, and GM. The AMC box has a 28 spline input shaft. Super T10 AMC Series weighs about 93lbs. AMC Design Series T 1st Gear 2.64 2nd Gear 2.10 3rd Gear 1.46 4th Gear 1.00

Gremlin4ever

In reference to the transmission, '71 and earlyer crankshafts will not accept 904/727 or T400 torque converters. The crank will need machining to equal '72 and later cranks if you have one and are planning to upgrade to the better transmissions from '72 and on. For those whom might not know, hate for them to run into this problem after the engine build :sa:

Mudrat

I've been thinking of cheezing out and putting a 727 or 400 in the 85 and replace the Tremec 5speed I put in. Did either of those trannys come with the D-300 so I don't have to swap or carve up the output shaft? Mudrat

fuzz401

from what i here the 727 will bolt right up to the 300

Mudrat

:-| :-| :-| May need to see if BT can get me one to find out ... and particular years to look for or stay away from that you know of? I gave them (BT's shop) the go-ahead to rebuild the bottom end of the YJ since I had about .2 inches of crank walk and I don't have the time or shop space to do it right now :smile: Thanks - How's your search for a new block coming?? Mudrat

Lifted79CJ7

Mud, just grab a drivetrain at UWI from a GWag. You will get the 360 and TF727 for cheap. And yes it will bolt up to the dana 300(you are running enough lift that driveshaft contact is not going to be a problem). A turbo 400 won't without an adapter and you will have a longer drivetrain. I am running a 401, 727, 300 combo in my jeep right now. Check out this site:
http://www.alanator.com/projects/jacksjeep/tf727_swap.htm
I just started this page but has some links that will help you out. It is a straightforward swap. Now to win the lottery so I can finish my engine! Let me know if you want me to take some pics for ya.
Jack

Lifted79CJ7

Oops, my link doesn't work. Try this page:
http://www.jeeptech.com/convtrans/conv727.html
Jack

Mudrat

Lifted79CJ7 wrote
Oops, my link doesn't work. Try this page:
http://www.jeeptech.com/convtrans/conv727.html
Jack

You caught that before I did :-) One of the 'giveaways' at the FSJ invasion was a Waggie!!! They guy wanted to sell it for $1500 but got no takers so he donated it to the lottery :-) I heard that a 15 year old young Jeeper just got his first project!!!

Thanks for the info and I'll be on the look out for a GW soon - but I gotta get the wiring fixed and get the 258 running first - build the 360/727, then do the big swap, my 258 into the YJ and the 360 in my CJ then rebuild that tired a$$ 258 for a spare :-)

Mudrat

Gremlin4ever

290 & 304 343 & 360 360 SPL 390 & 401
0.1250"
0.0450"
0.1075"
0.0225"

This is the part I keep telling people but they keep saying it is ok to go .030 :-|

Mudrat

Mmmmmm ... Grem's .... what are those numbers in reference to? Remember not all of us are AMC V-8 smart - yet .... :oops: 'Rat :-|