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If you are refering to the 185cc heads as the Stage 1's they must be similar to the old stage 2's. These are the flow numbers for my TW stage 2 heads done by TEA.

Lift Intake Exhaust
.100 66.7 51.6
.200 146.9 110.8
.300 222.4 157.2
.400 270.5 196
.500 300.5 221.9
.600 304.5 239.5
.700 306.1 248.0

This is what I am gonna use to top off my 331.

Rex
 

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With the right supporting combo, these heads should rip at higher rpms on your 331!
Well these heads are the reason I built a 331. Was orginally gonna be a mild 306 :eek: . Heads flowed too well. Decided to go with a high compression solid roller 331 :D

331, 13:1 compression, Comp Camps .672/.672 260/268 106 lobe sep, Super Vic intake. What ya think :D

Rex
 
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