Why would anyone select less than a 90mm TB for their motor...read this!
08-05-2004, 01:31 PM
#1
Why would anyone select less than a 90mm TB for their motor...read this!
IMPROVED INTAKE MANIFOLD WITH LARGER THROTTLE BODY
The Gen IV Vortec 5300’s carbon composite intake manifold offers several advantages over a conventional metal manifold, including less weight, improved airflow and better noise dampening. It is manufactured with a refined lost-core molding process that improves assembly efficiency and drastically reduces post-molding finish work.
With the new manifold, the engine is equipped with an 87-mm throttle body, compared to the 75-mm throttle body used on Gen III Vortec 5300s. The larger throttle body increases maximum airflow into the engine; it also prepares the Gen IV Vortec 5300 for further horsepower increases in the future. Moreover, the throttle body is now tilted upward 12.5 degrees, as opposed to flat to the horizontal plane of the engine. The upward tilt virtually eliminates moisture collection in the throttle body when the vehicle sits idle for long periods, and reduces the chance of throttle icing. Previous versions of the Vortec 5300 have used a heated throttle body to help manage emissions by warming intake. Thanks to the engine’s overall efficiency, the Gen IV Vortec 5300’s throttle body does not require heat. This eliminates coolant jackets around the throttle body and plumbing that delivers coolant to those jackets, reducing assembly complexity and eliminating a potential leak source.
The Gen IV Vortec 5300’s carbon composite intake manifold offers several advantages over a conventional metal manifold, including less weight, improved airflow and better noise dampening. It is manufactured with a refined lost-core molding process that improves assembly efficiency and drastically reduces post-molding finish work.
With the new manifold, the engine is equipped with an 87-mm throttle body, compared to the 75-mm throttle body used on Gen III Vortec 5300s. The larger throttle body increases maximum airflow into the engine; it also prepares the Gen IV Vortec 5300 for further horsepower increases in the future. Moreover, the throttle body is now tilted upward 12.5 degrees, as opposed to flat to the horizontal plane of the engine. The upward tilt virtually eliminates moisture collection in the throttle body when the vehicle sits idle for long periods, and reduces the chance of throttle icing. Previous versions of the Vortec 5300 have used a heated throttle body to help manage emissions by warming intake. Thanks to the engine’s overall efficiency, the Gen IV Vortec 5300’s throttle body does not require heat. This eliminates coolant jackets around the throttle body and plumbing that delivers coolant to those jackets, reducing assembly complexity and eliminating a potential leak source.
08-05-2004, 06:20 PM
#2
What he said!
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
08-05-2004, 07:24 PM
#6
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There is no such thing as too large a throttle body
in a dry-flow EFI engine, is my opinion.
However, there is such a thing as too expensive
(aftermarket) and too creepy (drive-by-wire).
Relative the performance to be gained from it,
on a stumpy little stock cam motor.
in a dry-flow EFI engine, is my opinion.
However, there is such a thing as too expensive
(aftermarket) and too creepy (drive-by-wire).
Relative the performance to be gained from it,
on a stumpy little stock cam motor.
08-06-2004, 07:55 AM
#7
will that tb bolt on an ls1 intake???
