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Author Topic:   305 with 400 crank in it questions
Dirt Full Roller

Total posts: 27
posted October 16, 2002 06:17 PM
im planning to take a 305 put a 400 rank in it i heard this makes a 334 then i wanna use 6inch rods which rods do i need to use 400 rods or 350 rods?
also how far do i need to bore this motor over to do so or how far can i bore it safely
my plan is to take the block and have it zero cleranced
i will run a set of 882 or 487 heads milled with 202 vlaves
should this be a good motor has anyone ran one with any luck thanks rick

Dirt Freak

Total posts: 346
posted October 16, 2002 07:23 PM
Kieth Black offers a few pistons (#KB145, KB229, KB143, KB144 & KB 186) piston. some use the 400 rod, some the 350 rod. The largest oversize is .060" over.

You also have to turn your 400 crank main journals down to 2.45" and clearance the block.

good luck,

Dirt Forum Champ
Total posts: 1565
posted October 16, 2002 10:23 PM UIN: 54865418
not to be a party pooper here but if your going to run hobby in des moines you can't stroke an engine must be stock stroke for block and says no 400 parts

Dirt Full Roller

Total posts: 57
posted October 17, 2002 01:10 AM
A 2.02 valve will not clear the cylinder wall on a 305 bore!!!!!!

Dirt Freak

Total posts: 353
posted October 17, 2002 09:05 AM
Eastside, 400 rod is 5.565" long, 350 rod is 5.70" long. Use an aftermarket 383 crank in the 305 block(mains already turned down). I do believe the deck can be machined for 2.02 valves. Is this correct? Maybe I'm getting confused w/305 heads!

Dirt Roller

Total posts: 13
posted October 19, 2002 06:58 PM
why stroke a 305 you still have a very small cube motor that cant turn rpms. just my opinion proper cam selection by a professional is the key to good power.

Dirt Roller

Total posts: 20
posted October 20, 2002 08:51 PM
I agree modi25, first thing I would do is scrap the 305 Idea your asking for trouble. find a good 350 block you'll save money in the long run, and like modi25 said a good cam with proper degree is the key to good torqe and horsepower

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