Rancor Keeper
Registered User
So I just got my heads back from the machine shop. Blew the headgasket earlier this year, so I finally got the teardown started last month. Had them milled, 3-angle valve job & a mild port/polish on the intake side. The shop that did the work has some experience with the supercharged 3.8s & said they've only seen 6hp at the wheels from a port/polish on a mild street build with a negligible torque increase. That probably translates to about 5hp per head, which isn't very much.
Seems kinda low to me, but all of my engine-tuning experience is on 8s, not 6s. Thoughts? Anyone here got any dyno examples after having done some light head work?
Seems kinda low to me, but all of my engine-tuning experience is on 8s, not 6s. Thoughts? Anyone here got any dyno examples after having done some light head work?
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