54mm = 2 1/8” Tbi - Spreadbore Carb Intake Manifold Adapter Vortec Inject-it-004 on 2040-parts.com
Eminence, Missouri, United States
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Pictures are not of actual product, but are a representation of the overall look. Actual pictures coming soon!
54mm = 2 1/8” TBI TO SPREADBORE CARB
INTAKE MANIFOLD ADAPTER Vortec INJECT-IT-004
This ½ inch
thick solid aluminum adapter will allow you to install a factory 2” or modified
(bored to 54mm = 2 1/8“) Throttle Body
Injection (TBI) unit on any aftermarket intake manifold with a spreadbore
(Quadrajet, Thermoquad, Holley, etc)s carburetor mounting surface (see
picture). With this INJECT-IT adapter, when doing a GM TBI conversion project
on your old chevy truck, street rod, rock crawler, or small block Jeep,
mounting your TBI unit becomes simple and attractive.
Factory 1 11/16” TBI units generally
will not keep up with high horsepower engine builds, and the use of a modified
(bored out to 2 1/8” = 54mm) GM TBI unit
is a good choice for these big cubic inch or very high horsepower small block projects. If
you are doing a high performance build, a big block 454 conversion, or a vortec
head conversion on your (1987 -1995) Chevy or GMC truck with TBI and don’t want
to pay for an expensive TBI intake manifold, just use a spreadbore vortec
intake manifold such as an edelbrock performer (#2116), performer RPM (#7104),
big block performer RPM (#7164) for
example, and this INJECT-IT adapter to mount your TBI unit in a near
factory location (front to back) keeping your throttle linkage, cruise control,
and fuel lines easy to install. DO NOT PURCHASE A SQUARE-BORE intake manifold
as your TBI throttle bores will be wider than the intake mounting surface, and
airflow will be restricted.
This particular
INJECT-IT adapter will only fit TBI units bored up to 54mm (2 1/8”) formerly
found on the 454 GM engines.
The following
parts will be needed for installation:
·
4 - 5/16 X 1” bolts
·
1 – TBI Gasket (TDP #2077) gasket bore modification may be
necessary.
·
1
- Spreadbore carburetor base gasket (MrGasket #57B) or equivalent
You will be receiving the INJECT-IT
adapter ONLY.
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