ford 400m build

[cjones75]

Hello everyone,

I recently bought a 1979 Ford Bronco (trailer special). It is completely original with absolutely no mods. I am rebuilding the truck and starting with the engine. It has a 6.6l 400m engine. Listed below is how I plan to rebuild the engine. Does anyone have any thoughts or advice about it?

* New 400m shortblock (stock)

* Stock oil pump, oil pan and waterpump

* Edelbrock 61629 - Edelbrock Performer RPM Cylinder Heads 60cc Chamber,190cc Intake

* COMP Cams CL32-242-4 - COMP Cams Xtreme Energy Cam and Lifter Kits Duration 262/270,Lift .513/.520

* Weiand 8010 - Weiand Action+Plus Intake Manifold

* Holley Carburetor, Model 4160, 750 cfm, Square Bore, Manual Choke, 4-Barrel, Vacuum, Dual Inlet

* COMP Cams Magnum Steel Roller Tip Rocker Arms (Rocker Arms, Stud Mount, Roller Tip, Steel, 1.72)

* Hedman Hedders 89210 - Hedman Street Hedders

* MSD Ignition 8350 - MSD Pro-Billet Ready-To-Run Distributor Magnetic Pickup, Vacuum Advance

That is it for new add-on engine parts. I do not know how much horsepower and torque it will produce when completed, but I have to guess that it will be over 400 hp and over 400 torque. Any comments are welcome.

 

[J&SBroncolvrs]

Your carb is too big and your cam is pretty crazy for that engine(the carb thing is right,the cam thing my opinion). Get zeroed timing gears for sure.

 

[Bronc76]

Some performance info for ya

http://www.ford-trucks.com/article/idx/0/104/article/High_Performance_Options_for_the_351M400_Engine.html

Not sure if you need the MSD ignition, the ford duraspark is pretty reliable itself.

 

[miesk5]

yo CJ,

Congrats!

Some info for you;

351M/400M Workshop; EXCELLENT M Block Information Source

Source: by Bubba (Dave R) at earthlink.net via web.archive.org http://web.archive.org/web/20050524000224/home.earthlink.net/~bubbaf250/index.html

351M/400M Performance Build Up

Source: by Paul E at http://www.projectbronco.com/Technical_Articles/351m400_performance_build_up.htm

351M/ 400M Rebuild or Should I Swap in a 429/460? in 78-79

Source: by Paul E at http://www.projectbronco.com/Technical_Articles/should_I_Keep_it.htm

a little more in my site @ http://www.broncolinks.com/index.php?index=182

Carb info is in there too;

http://www.broncolinks.com/index.php?index=204

and in my broncolinks.com site; use my new Search feature for 400m to find many more related Links

 

[BUCKIN'94WFO]

750 is a little big on the carb size. I'd go a little smaller in that category, and definately a vacuum secondary. Weiand has the biggest intake runners out there: that'll hurt your bottom end numbers. Edelbrock and Holley make intakes with smaller runners that'll help with the velocity down low and will still flow everything that the motor can pull. As for 60cc heads that's a pretty tight little chamber for todays gasoline octane numbers. Just sayin', better get behind the idea of buyin' the "ethyl" priced gas on EVERY fill up! The cam sounds fine though. Bigger displacement motors have a tendacy to tame the longer duration/ higher lift cams. Good luck with it Brother. Wow...just checked the posting date on this thread. You've probably got the motor built and pretty well broke in by now!