coramprat said:I need to find out at what point should I swap for a 70mm or even 75mm TB. My desire is to get a new upper plenium but I will also be doing a lower intake swap to a PI and probably a cam swap to the Comp 268's or Crower's 62811's. I will have stock NPI heads also. Would I be fine with the stock 65mm with swap to new plenium? Also should I swap MAF at the same time or would that be a waste NA?
I saw both write-ups on the 70 and 75mm TB's. But unfortunaly there were no numbers on the stock TB w/pleniums. Now that I've been researching a little I'm not sure the pleniums fit on a stock 65mm TB. It also looked like they worked better with the 70mm than 75. I think the 75 would come into play when your hp numbers were getting into toe 350 and up range and I'll never be close to that.stimmler said:check out Matts write up on modulardepot.com
c2see21 said:soooo..... is the youngin' not getting the stang now?
Be sure and look at not just the peak numbers, but he is right, the Accufab outperformed in both cases.coramprat said:70mm Throttle body
-----Stock---------Accufab----------C&L--------------Dragon
RWHP 256.09-------264.61 (+7.94)---262.70 (+6.61)---263.15 (+7.06)
RWTQ 289.43-------297.03 (+7.6)----293.83 (+4.4)----293.16 (+3.73)
75mm Throttle body
------Stock----Accufab-------C&L------------Dragon---------Trick Flow
RWHP 265.97--272.38 (+6.31) 271.13 (+5.16) 270.69 (+4.72) 270.19 (+4.22)
RWTQ 303.54--310.42 (+6.88) 306.05 (+2.51) 307.27 (+3.73) 306.61 (+3.07)
With the numbers in one place to look at it seems the 70mm TB does best with the minimal mods/HP. The 75mm did better in MM&FF article because that car was laying down 400hp.
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