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Author Topic:   best 2bl combo?
skippydoo
Dirt Roller

Total posts: 18
posted October 24, 2005 07:02 PM  
Whats the best bore stroke combo to build for a 4412 2bl motor? big 1/2 mile dirt slow flat corners slick. 2500lbs car can use bowtie or dart heads (180darts) can be ported, but must be covered up. Flat tappet cam. I see guys are saying 3.28 stroke and big bore. How does this compare to a motor with 5.7 rods 3.5 stroke 358 cubic inch? Around here guys say a long rod motor is lazy on the bottom end so Im kinda hesitent about the 6.2 to 6.4 rod length. What do you guys recommend and why? Also would you build the same combo if rules were the same except for a rpm rule 6600 max vs unlimited rpm. I realise a cam change would be required for the rpm change ,but I worried about bore,stroke,rod length thanks

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