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Some MotorHome , but mostly D500 to 700 series had a 4 speed A345 with a first low gear compounder added to the back of transmission. 1st was 3.45 , 2nd was 2.45 (stock 727) 3rd 1.45 and 4th direct. You can see the basic 727 with extra components. Very heavy for a car or light truck. They had a...

Indeed , the low 2.74 in the 904 was introduced , instead of creating an O/D transmission, My 79 Newport has a 2.45 rear axle with 2.74 low first 904 lock-up (999 , not sure). Most M bodies did have that set-up.My guess , it was to make for low cruising rpm without developing an o/d trans for...

Hi , I'm Marc . Always liked cars started drag racing with a 74 RR with a 440 from a '69 Imperial. Then I've started to play with M bodies mostly. I decided to join in because I was looking for some parts and a thread about 440Source showed up. I wanted to add my two cents. I did have few B...

Hi !! Any of you have a set of 400 H beam rod with stock dimension . 6.358 long for stock crank pin and piston pin. Thanks !! RoadBoss2

Lollllllllll Let's revive this post. We bought a 500 c.i. for a 400 block from 440Source , It was the full balanced kit. I sent it to the shop I used to work at 11-12 years ago for block machining and assembly. They also checked if it was well balanced and yes it was. We put it in a Valiant for...