LS3 heads versus LS6 heads?

[69CST6.0]

Depends on your budget which way you go. The ls3 heads will give you more power but you will need a rectangular port intake and a aftermarket throttle body if going dbc. Also the cam splits are a lot more exhaust biased for the ls3 heads. BTW 799 heads are 5.3l truck heads, They are the same as the 243 ls6 heads minus the sodium filled valves.

[Super73]

Originally Posted by 69CST6.0

Depends on your budget which way you go. The ls3 heads will give you more power but you will need a rectangular port intake and a aftermarket throttle body if going dbc. Also the cam splits are a lot more exhaust biased for the ls3 heads. BTW 799 heads are 5.3l truck heads, They are the same as the 243 ls6 heads minus the sodium filled valves.

Be careful what you say as "truck heads" can be very confusing. Early 5.3's did not wear either version of the LS6 castings.
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