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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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Hey guys 70 or 65 mm tb?

  • Thread starter Thread starter Jo_885o
  • Start date Start date Jul 16, 2004
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remat457

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Aug 7, 2002
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Seattle/Tacoma
Jul 19, 2004
#41
  • Jul 19, 2004
  • #41
D347643 said:
does anyone have any dyno runs showing a comparison between the tb's?
i have the exact same setup as the guy who started this thread. i think i should go with a 75mm now,
Click to expand...

I looked through "5.0 Dyno Tests" and they dyno several TB's but the actual chart isn't really worth much unless you happen to have that exact setup....

BUT....they also conluded:


"Installing a larger 75mm throttle body actually resulted in less power, even on a motor that produced 350 hp with the right combination of components."


so...again it all depends on what you want to do...
 

mob

the guy who hits on his mom
20+ Year Stangneter
Oct 3, 2003
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Dallas, TX
Jul 20, 2004
#42
  • Jul 20, 2004
  • #42
jaidedeye said:
stock is either 55 or 60..

id go with a 70mm
Click to expand...

yea i no its 60
 

89CopCoupe

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Feb 17, 2004
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Jul 20, 2004
#43
  • Jul 20, 2004
  • #43
70mm is a decent choice for the combo you have. As everyone knows, they work well for a decent 302-347 build. A little bit of a bottleneck will help with port velocity (throttle response on a n/a motor). Dead air sucks

My friend Aidan's '89 306 coupe pushes 305hp/320tq n/a through a "stock" FRPP 65mm unit. I don't know what he'd gain or lose by going to a 70 , but his works and has good throttle response.
 

Jo_885o

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Jul 17, 2003
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Jul 20, 2004
#44
  • Jul 20, 2004
  • #44
Alot of back and fourth here. hmmmm..... I'm going with a 70 mm tb and 70mm mass air fella's so thankz anyway.
 
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