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Old 07-28-2023, 05:35 AM
3X24SPD 3X24SPD is offline
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Join Date: Aug 2006
Location: NH Seacoast
Posts: 185
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I've had mine installed & running for a couple weeks now.
My carb venturis are opened up as well.
Overall, I'm really happy with the performance results.
Quite a difference from my old worked intake.

Just as an FYI, anyone who expects this to be a quick 20 minute swap as I did will be somewhat disappointed.
Several issues, the most significant including:

1) Required a .065" correction cut.
I've had 3 different TriPower intakes on this same motor previously- none of which required a correction cut.

2) 1/4" interference between the back of the intake and the distributor.
I had to grind .125"+ off both the distributor cap and the back of the intake.

3) Machining required to eliminate airflow obstruction on all three carb flange ports.

There's a few other things, most minor stuff. Here's a couple:

Need to drill & tap in 3 locations if you run PB, PCV & VA.

The bolts included are stock length- but the intake mounting flanges are 1/4" thinner than factory- so the bolts bottom out in the head threads before they make contact with manifold. The ports are tall & wide- so the small diameter 3/8" 12-point heads supplied are necessary for clearance. I replaced with 1/4" shorter socket heads.

The ports are tall- so the valve cover lips need to be clearance as well.

There are shortcomings in the engineering design department- most notably the width of the carb flanges and the lack of material underneath them at the entrance to the plenum to accommodate proper airflow. There's not enough meat there to open up & correct that short turn.
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1966 GTO (Red) WARPATH
469CI TriPower 4-Speed

1965 GTO (Black) TRIPOWR
455CI Weiand Dragstar with 6 Strombergs
4-Speed

1965 GTO (Blue) 3X24SPD
464CI TriPower 4-Speed

1963 Tempest (Red) VIOLENT
440CI 2X4 Mag Nash / T400 (for now..)
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