62mm throttle body gain

johnplogii

Senior citizen
Just thought I would post results since I couldn't find any real hard proof by searching. Up until last week I was still running the stock 57-58mm throttle body. Two weeks ago with the stocker at 850 ft DA I ran 6.56 at 106.28 in the eighth, I also ran 106.05. This weekend with the 62mm & no other changes other than 1800-2000 DA I ran 6.55 at 106.49 and 6.58 at 106.71. So I gained a solid 1/2 MPH in the 1/8th mile in worse air. I have read that it won't make any difference on slower cars but it helped on mine.
 
Just thought I would post results since I couldn't find any real hard proof by searching. Up until last week I was still running the stock 57-58mm throttle body. Two weeks ago with the stocker at 850 ft DA I ran 6.56 at 106.28 in the eighth, I also ran 106.05. This weekend with the 62mm & no other changes other than 1800-2000 DA I ran 6.55 at 106.49 and 6.58 at 106.71. So I gained a solid 1/2 MPH in the 1/8th mile in worse air. I have read that it won't make any difference on slower cars but it helped on mine.

Two weeks ago: 6.56 @ 106.28 and 106.05
Now w/62mm: 6.55 @ 106.49 and 6.58 @ 106.71
Where was the gain?
 
Would be nice to see what you will gain when the DA is comparable to your previous runs with the stock t-body.

Same boost numbers?

BW :biggrin:
 
Not bad considering is was only the 62mm ported TB.

I am not sure why so many dismiss this mod but ported TB or bigger TB's make more power on these cars.
 
If boost would have dropped, that would indicate that the TB was some level of a bottleneck, but it doesnt really seem that way here. I have a 62 TB as well. Bigger TB's are always more fun on the street as they provide more air at less throttle so it makes it feel faster, but I really dont notice any difference between 3/4 throttle and full throttle.
 
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