goals and choices
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Joined: Feb 2004
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From: conway arkansas
goals and choices
well i've made my mind up to drive the ole 400 til i leave for the sandbox next week, but i've also made my mind up to when i come back to freakin put a new 400 in the ole truck. My goal is around 500 ft lbs of torque, how hard do yall think it'd be to get it out of an ole m block? I swapped cams and clutch last weekend, it runs a little better than a stocker, but most important upped my fuel economy from 6 to 11 mpg, lots better alright, i'm thinkin when i come on back to the states from over 'er to put some money in a 400, to include a set of pistons that actually compress air, a good set of heads-need suggestions on that too, dont know yet what manifold will go on him, heads will dictate that, anybody know anything about those che or cfe or whatever the name is on those aluminum heads? thinkin about puttin a 750 demon carb on a weiend intake, this will all go in a 79 f-250 4x4 supercab with a t-18, the speed shifter it is, ha, gonna swap out the 4:10 gears for some 3:54 with lockers also, definatly gonna do some body work of course
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Joined: Mar 2005
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From: western montana
search for build info in this forum...there is soooo much info. I just got ossie 2v heads put on my '71 block- kb pistons from tmi- about 9.5:1 compression but these are new so it will be interesting to see how the quench handles differing octane. My build should be in my truck next weekend. I'm hoping for 475ft/lbs and 380hp or so. All down low. Plus a hyd roller cam with rscorpion roller rockers. Performer intake....still mulling over holley intake that is single plane so will lose a bit of down low but all the dyno info isn't that conclusive. Then a 600cfm edelbrock cam until i put my prpane mixer on.
Still looker over the carbs- good case for using 600 over 750- and some for 750- I'm thinking 650 maybe or? Maybe a 750 with the holley intake would make more sense??
Regular oil pump and cast iron, american made water pump. HEI ignition makes torques beloved duraspark go away...
Also...450ft lbs is a whole bunch and you get into a lot of $$ in parts to get 500 imo. What will you use it for..ie what duration cam cam do you need...then plan your Compression around which cam you want and how much it drains so you end up with a motor that will burn 87 pump vs nascar fuel.
Still looker over the carbs- good case for using 600 over 750- and some for 750- I'm thinking 650 maybe or? Maybe a 750 with the holley intake would make more sense??
Regular oil pump and cast iron, american made water pump. HEI ignition makes torques beloved duraspark go away...
Also...450ft lbs is a whole bunch and you get into a lot of $$ in parts to get 500 imo. What will you use it for..ie what duration cam cam do you need...then plan your Compression around which cam you want and how much it drains so you end up with a motor that will burn 87 pump vs nascar fuel.
Last edited by roger dowty; Sep 29, 2006 at 11:15 PM.
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Joined: May 2006
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id go with the tmeyer 434 stroker kit. then you could put down some big numbers. but i dont know if this is what your looking for. i think a 750 cfm carb will be to big for your motor, maybe go with a 650 or 700 unless you plan to race. go to the tmayer site and they have some good info on a 400 build they did.there 400 put out numbers close to what you want.
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From: western montana
If I were to do an inexpensive, proven build I'd use badger pistons- port and polish stock heads with a bit larger valves, a comp xe256 cam, roller rockers, performer intake with performer carb.
All parts are relatively inexpensive and available from tmi or ebay or a combination of the two. As an example you can get oversized badgers for about 150 to your door.
That combination will provide a 320+-hp motor with 420+-ftlbs. A flat torque curve and probably the best mileage you can get form the engine- or close. It would be a simple build w/o surprises that come easy with high end parts. I'd have the block line-bored as well as the usual machine work.
All parts are relatively inexpensive and available from tmi or ebay or a combination of the two. As an example you can get oversized badgers for about 150 to your door.
That combination will provide a 320+-hp motor with 420+-ftlbs. A flat torque curve and probably the best mileage you can get form the engine- or close. It would be a simple build w/o surprises that come easy with high end parts. I'd have the block line-bored as well as the usual machine work.
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