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Racer_Rick said:
Crazy junior fuel rules say less than 410 inches. Gonna try to beat them at their own Chevrolet game!
You don't have to publicize your intended combo, but just a thought: You can take a dime-a-dozen 460 block and sleeve all 8 down to 4.25" bore. 429 crankshaft and 4.25 bore = 407 cubes. In this particular case, sleeving all 8 does not hurt structural integrity of the block since the original casting is still 100% intact (bore to only 4.385 for sleeving down to 4.25).

Want a 410 cuber with more stoke? Take that 460 block and sleeve it down even further.

The advantage to this over the D9TE-BB 370 block is that you will have much, much thicker cylidners than the 370 blocks that I have seen.

Paul
 

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HEY Racer Rick - If you decide to do what paul is talking about with the 4.25" bore - Let me know as i have a set of 4.25" bore diamond pistons for a 385 series that I can sell you for a real good deal!
 

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Discussion Starter #9
Biggest deal is doing on a budget. Sleeving 8 cylinders is pricy & I still have to make sure the boss/wife will drive it if it goes fast enough. Sleeves did cross my mind but I can probably do a Cleveland (yuk) cheaper since I have access to quite a bit of that too.
 

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Discussion Starter #11
Only rules are stack injectors, production heads, & under 410 cubes. Still cheaper to get a block than offset grind a crank I think
 

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like the short stroke / stock bore. should cost less also. destroked 429 crank, 6.7 bbc rod, stock 429 pistons. but better deal 6.8 rod and still use 429 scj piston cut to give a small dome. on h beam rods bushing would need removel for pin fit ( that needs looking into.) should be low cost and small intake port friendly. A Brown knows what has to be done to correctly destroke a crank
 

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I have two complete running engines one is 1980 429 D9 block and the other is 1987 D9 370 . Call me on monday301-662-5292 in MD
 

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destroking....

I'm no expert, but it seems like destroking the BBF would make more sense. The engine would be much more rev happy and would continue to give room for the heads to breath. A short stroke engine should be a real screamer. Probably wouldn't even need any fancy heads either.
 

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YES BY ALL MEANS de stroke the 429 block, rember bore is power,
 
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