MTI X1 230/227 with a 3000 stall work in a 5.3?

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Aug 5, 2013 | 06:31 PM

#11

03klugss

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From: Berrien Center,MI

Quote:

Originally Posted by dirt track racer 81

Those heads are not worth the effort because of the larger combustion chamber, you'll lose compression. The ls1 heads really do not flow much more better than the 5.3 iirc.

You are correct! In fact the flow numbers between the 806 and 706/862 heads is damn near identical believe it or not.

806 heads:

Chamber 66.67 cc------0.100--0.200---0.300---0.400---0.500---0.550--0.600
Intake 200 cc------------67----122-----178-----215-----219-----223---227
Exhaust 70 cc------------52-----97-----133-----156-----170-----76----180

706/862 heads

Chamber 61.15 cc----0.100--0.200--0.300-- 0.400--0.500---0.550---0.600
Intake 200 cc----------63 ---128----179-----210----218----221-----226
Exhaust 70 cc----------54 -- 93 ----121----145-----163----168----174