maple ridge puller wrote:Looking into building 400 chrysler stroker. Want to use 440 crank and h beam 6.768 rods. Looking for any info on what im gonna run into along the way and what I should use for pistons and what would be the best cast head for the job. Thanks in advance.
maple ridge puller wrote:Well this is a project started by the previous machinist at the machine shop I now work at. Im not sure what kinda of combo he was wanting to run but the customer is hoping that I can take what tat individual started with and build something fairly low buck and still be a good runner. Just goin in a street car nothing to fancy. Just want to make sure I wont be runnin into any dificulties when it comes to the balancing or clearance of the crank to block and main bearing clearance. Being from a backround of mainly bbc Im not very knowledgable with the chryslers.
Keith Morganstein wrote:The 4.15" stroke, 400 based stroker is a great combo. Revs like a small block. With this budget it seem they will build a 3.75" stroke tho..
Some of the clearancing can be done in the block too. There are areas that can be ground, smoothed and stress relieved in the process.
The 440 source platinum rods work fine. Doubtful you'll have to do a my clearancing (for the rods) with the 3.75" stroke. Some minor clearancing is required with the 4.15 stroke.
On the heads, 906 castings are preferred over the 451's, but neither are all that great. Most of the old cores will need all new guides and all the exhaust seats. The customer might rather use the 440 source stealth Alum head. I haven't personally used them, but feedback seems OK.