on most fords there is 3 settings on the rear crossmember. the standard x member bolts up to the rear set. headers are the same, just get a set that are the tallest, not the shortest, as the can get too close to the floor.JG33 said:A 400 can be cheaper to build than stroking a 351C, only thing is you need a C6 and I think you got to shorten the tailshaft and need a custom made trans mount.
Engine mounts are different to the 351C and the headers you would need to have custom made and would probably cost around $500 more than the 351C headers.
The 400 weight is not a big deal (unless your're a serious drag racer) it's around 11kg heavier.
why spacers?? edelbrock do a single and a dual plane, and holley do a street dominator single plain. if you want more, then get the spacers. i think weiand made the spacers i use for my blower manifold. they fitted up ok, with a little port matching to suit. the engineers should be quite easy, as standard mounting positions are used all round. as long as the extractors clear the floor, you're laughing. especially in nsw, where the rules are pretty lax.brenx said:I perfer going the small block option. A non-standard engines a lot of hassle. Remember you have to run spacers between the manifold to get an aftermarket manifold to fit. If you going to do it legally (engineers etc)? It'll be more benificial to go the 400M or a 460. If you don't want to spend $ on engineers etc 351C the go.
Thanks Craig. Great pics.kionga said:Hello Rhett. You will certainly improve the standard CR (8.0:1) by using 302 closed chamber heads. That is what is happening in the US, although they are using flat top pistons and machining a dish of specified depth to achieve the desired CR. Look up Tim Meyer's web site. It will give you an idea of what is being done with the 400. Stroker kits giving 434 cu i, and talk of designing cranks to achieve 459 cu i! I have a single plane Holley Street Dominator for the 400 on my XD. The spacers were way out of alignment with both the heads and the Weiand X-celerator manifold. I got a set of headers (Lukey tri-y's for the 351C) to fit into an XD with a bit of modification. You can view my build on the following site:
I've only seen the Performer for the 400.CRUSHU F150 said:Edelbrock do a single and a dual plane 400m manifold
Holley used to do a Street Dominator 400m manifold. Weiand do a Xcellerator 400m manifold. That should cover most peoples needs anyway, without having to get spacers etc. BTW, you can get a nodular crank, steel h beam rods and forged pistons, that will make 434ci in a 400m block
I have 2 different 400m Edelbrock manifolds. 1 is a single plane, the other dual plane.Rhett said:I've only seen the Performer for the 400.
I'm really interested in the 400 'cos I'm looking for heaps of low rev torque for the street, without having to build a motor to survive 8000 RPM.