Buy TB or Port? 
View Poll Results: Port or buy a new TB
Port exisitng TB
80
81.63%
Buy a new TB
18
18.37%
Voters: 98. You may not vote on this poll
Buy TB or Port?
The only new TB that I would buy is the FAST 90. Other than that get your stocker ported. If you are planning on going with some pretty decent power in the future go with the FAST. Otherwise stick with the ported one 
Originally Posted by C_Rules
I just wanted to know what everyone would recomend. Would you port your existing TB or buy a new one? What are the disadvantages of porting?
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Verdad Gallardo Not sure yet if ur talking about the intake manifold i havent made a decision about that yet. Ill change that when i get new heads and cam. I heard u can only bore an oem tb to 52mm only is this true?
Originally Posted by C_Rules
Not sure yet if ur talking about the intake manifold i havent made a decision about that yet. Ill change that when i get new heads and cam. I heard u can only bore an oem tb to 52mm only is this true?
TECH Addict
Joined: Nov 2001
Posts: 2,003
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From: Live Oak, FL - in the woods where the creatures lurk.
Originally Posted by destroyerSS
Is this a LT1 or ls1??
if i port my LT1 oem tb can i prt it to 58mm because i heard u can only bore an oem tb to 52mm max. also what do i do about the butterfly plates do they machine me new ones as well?
Dont port your LT1 throttle body. And sure as hell dont touch it where the butterfly is. That area has to be matched.
The reason people port LS1 throttle bodies is because there is a bottleneck in front of the butterfly that can be removed.
The reason people port LS1 throttle bodies is because there is a bottleneck in front of the butterfly that can be removed.
I ported mine. There are some good how-tos on how to do it if you search. It is not rocket science. What it is worth HP wise is still debatable. Just take your time and be careful.
When you are done in an hour you will be glad you did not fork out big cash for one.
Good Luck!!!
When you are done in an hour you will be glad you did not fork out big cash for one.
Good Luck!!!
I ported my own TB, and I had problems since that. I mean, on cold startups my idle jumps up-and-down, and finally after 30 seconds finds its idle. It got worse after my cam swap...Now it takes 1 minute to stabilize....
I don't wanna spend $$$ on 90/90 combo, so I'll either get a 80mm BBK unit, or I'm just gonna buy a stock TB and replace it with my butchered stock unit...
I don't wanna spend $$$ on 90/90 combo, so I'll either get a 80mm BBK unit, or I'm just gonna buy a stock TB and replace it with my butchered stock unit...
