TBI Manifold Preference...???

[Doug Dayson]

Hi All...

I'm looking into possibly converting my 71 Vette 406/400 to TBI (from a
well-dialed Q-Jet).

Engine specs...

406ci, TFS Twisted Wedge heads, 1 5/8" X 3" Headers, 218 @ .050 110 LSA hyd
flat tappet cam with .485 lift with 1.6 Rockers, medium-rise dual plane
and 750
Q-Jet. Current powr peak is at 5200 rpm, torque peak at 4000 rpm (a reasonably
mild and streetable 406).

Old Vettes suffer from low hood lines so high-rise manifolds won't fit. This
leaves my options at low-rise single plane (Torker II) and medium-rise dual
plane (Performer etc).

Now I know that the Performer manifold is killing the power over 5000
rpm so
I'm considering the Torker II for use with a TBI.

To my undersatanding, since the TBI doesn't require manifold vaccuum to
properly meter and atomize fuel will the single- plane/TBI combo deliver
similar low rpm performance as the current dual-plane/Q-Jet?

If yes, then I should be able to see increased performance from around the
torque peak up past the power peak with the single-plane/TBI, as well as
comparable low-end to the current dual-plane/carb, yes?

What do Ya'll think?

TIA...

Doug
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