Power gains from a 52mm - 58mm tb on a H/C car?
#1
Banned
Thread Starter
iTrader: (13)
Join Date: Jan 2011
Location: Wisconsin
Posts: 335
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
So I've got a 58mm BBK on my car currently, but I'm interested in getting a Holley tb because they look so much nicer and would go with the rest of the engine. I found a great deal on a 52mm one.
So is there really much of a power gain between the 52mm and 58mm on a H/C car? Should I wait for a 58mm?
So is there really much of a power gain between the 52mm and 58mm on a H/C car? Should I wait for a 58mm?
#3
TECH Senior Member
iTrader: (2)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Slim to none. If you have money to burn go for it. Alot of the time aftermarket 58mm throttle bodies have IAC, TPS range and idle control issues., but I didn't have any of those issues.
Having said that, I went with a Holley 58mm on my 383 with minor issues, easily fixed. I ran a Holley 52mm for 6 years prior though.
Having said that, I went with a Holley 58mm on my 383 with minor issues, easily fixed. I ran a Holley 52mm for 6 years prior though.
Trending Topics
#9
TECH Fanatic
Join Date: Jan 2004
Location: Kingfisher Oklahoma
Posts: 1,157
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
#11
TECH Enthusiast
iTrader: (7)
Join Date: Jun 2007
Location: St Joseph, MO
Posts: 739
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
If your search, there is a thread where a guy did a dyno comparison between the two. He had a mild H/C setup and put down high 300's. Peak numbers were slightly more with the 58mm but the graph showed gains of up to 20ft/lb under the curve.