I have a 91 LX 5.0 and want to put a new tb in. what kind and what mm would be best for my car? thanks guys

 

65 if your going to build for 350 or less whp and 70 for more

 

+1 Your best bet would be to go with a 65mm throttle body. Alot of people run accufab, etc. I ran a BBK for a while and had no problems with it but some people will tell you differently.

 

You could go with a Ford Racing throttle body. 65mm. It has a new tps attatched . Some other brands dont.

 

i'd go with the 70mm so when you start getting up there in power you wont need to buy another throttle body. besides you're only gonna flow so much through a stock unported manifold anyways.

 

thanks everyone

 

i have a 65mm tb on mine right now, i bought it from 50resto its the professional products one, i paid $124.95. it works just as good as when i had any other one on there. so if you want id get that. actually im probably selling mine if your interested ive had it on my car for about a month.

and id go with 70, like he said i paid the money for the 65 and im about to start doing more upgrades and ill need to goto 70 so i just wasted 130 bucks. the biggest tb you want to stick with on a stock intake is 65, because the 5.0 intake plenum upper is only 64mm so itll actually block air, you need to get it bored out to match 65mm. if your going to change your intake then id go with 70 esp if your going to put heads or a cam.

 

omg speaking of tb's did you hear of accufabs new 105mm i never heard of that until like 3 mins ago maybe its old u new to me, kinda pointless to run that big of a tb unless your at like 1000+ hp eh?

 

Im not sure about 1000hp but yes thats a huge tb

 

man i know its huge what on earth you would actually need that big of a tb? i doubt theirs even an intake thatll match that? the biggest intake ive seen is the trickflow with 90mm opening and i think boring it 15mm over would screw something up eh?