which block for a sbc 434" DART SHP or BOWTIE,

Old 09-26-2009, 02:00 PM
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Default which block for a sbc 434" DART SHP or BOWTIE,

bowtie block or dart shp block can either one be bored to 4.155?
if both can be used which one would you use? thanks for your help
i would like to sell my donovon block (decked 180,000 ths.) 4.155 bore, crank (3.6250 stroke) and feff johnston aluminum oil pan to build a 434" for next season. Bowler
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Old 09-27-2009, 12:59 AM
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Both blocks can be bored to 4.185. NASCAR uses the Bowtie blk. but spend $1,000.00's of dollars preping them.
Carl Hink says the SHP and lil M blk are on sale for the next 3 mos and out of the crate the Dart blks are a better choice. About 3 yrs. ago i bought a Dart lil M blk at a very low price because we bought 4 of them. bored it to 4.155, and put a 4" crank in it with Lonati ProMod rods. Didn't have to grind anywhere on the blk. and used a cheapo 7 qt. trap door pan. I did have to use a small base circle cam, Bullit ground me an .880 B/C cam 4.7 swap with a special grind that i ask for. clearance every where no problems.


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Old 09-27-2009, 06:36 AM
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Dart says the SHP max bore is 4.165
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