walleyejack

can anyone tell me what make and size throttle body Callaway uses on the 757 package on Zo6 ?

have an opportunity to purchase a used one. want to make sure it will work no the LT1. have done some research, to no avail so far. my next move i think is to call Callaway.

tia Al

blue_bomber697

I feel like calling Callaway is a very easy, quick and surefire way to get your answer. Why don't you just do that?

walleyejack

because they still sleeping right now,
but thanks for your input

0Callaway Chris

Factory Throttle Body is utilized.

walleyejack

87mm, are they ported ?

0Callaway Chris

Not ported. Thanks.

walleyejack

ok thanks Chris for the answers.
the lad selling his off the 757, went to 957 i think he said, and didn t believe the one on the 757 was stock.
thanks for clarifying sir.
i will have to hunt one done.

JHEBERT

I am the guy with the throttle body, it seems I have the only 757 with 10 rib pulleys and a ported throttle body. I’m special

Picks of the unit that was on my car...

walleyejack

Callaway tells me they are stock non port tb.
Is all i can say.

spearfish25

That looks like the Katech throttle body with machined flattened cross bar.

JHEBERT

I got one of the first 757s, when dynoed, it was down about 100HP. After consultation with a Callaway engineer, it was decided to change a couple of things...among them the upper pulley and throttle body, intake runners and various other tweaks. Parts where sent to me and I did the install and dyno testing to verify that all 757 ponies where present...and they where

I have wrenched on and seen other Callaway 757s that are not EXACTLY like mine, but my car headed there before the 1st 757 left. They also knew in advance that I would be taking it apart to mod extensively as soon as I took delivery. Initial dyno testing results delayed my build.

blue_bomber697

Does further modifying a Callaway car void the warranty you get through Callaway? Logically, I would think it does, therefore defeating the main reason for buying a Callaway in the first place, but I am not sure.

JHEBERT

Warranty was of no concern to me, once I put 2k or so on it. Then it’s mod time...

Avanti

Callaway's response tells ya how important porting really is.

walleyejack

yup. not necessary i guess.