Quote:
Originally Posted by ho428
69 #46 heads.
I could just upsize them to 2.11's but was wondering if going to the 2.20 and leaving the 1.66 would be better than the 2.11-1.77 on a road race engine.
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Go to the bigger intake valve with corresponding port crossection work .OK to stay with the 1.66 EX.Have made 1138HP with 1.66 EX NA.
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