Building a 331 need lots of advice!!
05-08-2010, 07:25 PM
#21
Tom that is flat out misinfo at its finest............despite what you may have read on the internet, the ole rod rationale argument is misinfo, there are SB chevies and BBC'S that carry a so called "worse rod rationale" than a SBF 347 AND HAVE GONE WELL OVER A 100K......what is key is who builds your stroker and how well they pay attention to detail, I run a 347 with no ill effects of the rod rationale argument and I spray it too. and if the rod ratio scares you of a 347 use a 331 rod/5.315 and 331piston and 3.4 throw on the crank 
look at the rod/stroke for a 454 chevy, its god awful...
05-08-2010, 09:47 PM
#22
1st Gear Member
Join Date: Aug 2009
Location: CA
Posts: 86
thats what everyone says where i am from about the 347. i know it works but been told 331 is the way to go. just saying guys i know you can build any motor solid but here in st louis i dont see many 347 not many 331 either lol just going by what some speed shops and machinists told me......i didnt stroke mine becouse the extra money involved.....
I do a few hundred a year and almost none of them are 347's. I've never seen the reason, for leaving around 16 free horsepower behind.
Last edited by Mark O'Neal; 05-09-2010 at 01:35 PM.
05-09-2010, 04:04 PM
#25
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
I almost put a 331 in my 89, only becasue I already have a 347 in my 85 and I had a complete h/c/i better suited for a 302 laying around and by doing a 331 using a 302/h/c/i , I wouldn't of felt as bad if it didn't perform well knowing I used an inferior h/c/i however had it of been 16 cubes more that'd of made me feel even worse if the output was less than desirable, fortunately, funds didn't work out and a 306 went in it
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