Throttle Body Replacement
Thread Starter
Intermediate
Joined: Jan 2025
Posts: 47
Likes: 3
Throttle Body Replacement
Hey guys, I recently decided that i’m going to replace my tb since it’s on its last legs and I’ve done all I can to make it last. The only problem is that when I look online for a replacement, I can’t seem to find a stock 48mm tb new. I do notice that there are lots of 52mm tb’s, specifically BBK. I was wondering If it would be possible to just get the 52mm while having a stock engine. Would it make it run too lean? Or would the car be able to adjust to it? Id appreciated your input since I’m trying to get this done ASAP
Burning Brakes
Joined: Jul 2012
Posts: 895
Likes: 91
From: Poughkeepsie, NY
It won’t make any difference. I put a 52 mm Holley on my 89. But the volume of air is still be limited by the MAF sensor.
I did get better throttle response, but my old TB was really sloppy.
I did get better throttle response, but my old TB was really sloppy.
Thread Starter
Intermediate
Joined: Jan 2025
Posts: 47
Likes: 3
1st Gear
Joined: Aug 2025
Posts: 1
Likes: 0
Mine I think is shot at this point. I have a bolt missing from the tps sensor. I think my only option is to go to a 52mm TB but I'm not worried about getting any power from it I just want better throttle response. I'm only getting 9mpg and can't find any 48mm TB's in good enough shape. What do you think?
