Throttle bodies????
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Cruising
Joined: Jun 2005
Posts: 13
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From: York PA
Throttle bodies????
Is it necessary (or recommended) to replace the stock Throttle body on a 1990 L98 when doing engine mods? I see a lot about going to a 58mm one, but I've also heard people say that is in not necessary. I will be replacing Intake, cam, and exhaust on a currently stock l98 (with planned headwork as well).
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I opted to go with a 52mm on my L-98 with bolt on performance parts. I immediately felt a difference, well I also put on a set of 24lb injectoers at the same time with the adjustable fuel pressure regulator. It seemed to really appreciate the new parts. Just remember that when you put on a 52mm or 58mm(which 58mm not necessary unless doing extreme mods to motor) you will have to port the intake at the front, there is a ramp at the bottom that needs to be grinded down and on the sides as well as the inlet holes will need to be gasket matched. To get a good idea of what it looks like you can visit www.corvetteplenum.com Hope this helps, I did my own by going to the hard ware store and buying two metel drimmel type grinding tips(for my high speed drill one flat,one rounded as well as a stone grinding kit) it's not hard to do just be careful not to take too much off,GO SLOW! Your Vette will love it. Thanks Matt
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
If you e-mail me I can give you the place that bored out my stock throttle body, rebuilt the shaft and installed the new 52mm blades.
It only cost me 149.00(I went ahead and opted to do mine on exchange basis) plus core exchange 59.00 you get this back via PayPal(he uses PayPal) no charge after you send yours back to him. It works soooo! good and the work is super clean, They are located in Texas and he ships very fast and communicates very well with the customer.
You can e-mail me at madmatt9471@sbcglobal.net
I hope this helps, you wont be dissatisfied. Thanks Matt
It only cost me 149.00(I went ahead and opted to do mine on exchange basis) plus core exchange 59.00 you get this back via PayPal(he uses PayPal) no charge after you send yours back to him. It works soooo! good and the work is super clean, They are located in Texas and he ships very fast and communicates very well with the customer.
You can e-mail me at madmatt9471@sbcglobal.net
I hope this helps, you wont be dissatisfied. Thanks Matt
