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Darrin Christen · 12-03-2008, 01:17 PM

I run a Dart Little M with 350 mains 4.030 bore. I think the Bowtie block is a little lighter though, Thinner cylinder walls. I went with the Little M because I already had the 355" rotating assembly but I wanted to be able to build a larger engine future. The Little M would allow that option because of the thick cylinder walls. Dart recomends you can bore it to 4.185" and still have .200" thick cylinder walls. Good Luck!

12-03-2008, 01:17 PM	#2
Darrin Christen Member Join Date: Mar 2007 Location: Des Allemands, LA Posts: 365 Likes: 8 Liked 1 Time in 1 Post	Re: sbc block I run a Dart Little M with 350 mains 4.030 bore. I think the Bowtie block is a little lighter though, Thinner cylinder walls. I went with the Little M because I already had the 355" rotating assembly but I wanted to be able to build a larger engine future. The Little M would allow that option because of the thick cylinder walls. Dart recomends you can bore it to 4.185" and still have .200" thick cylinder walls. Good Luck! __________________ 4878 SS/GA 66CHEVY II