throttle body sizing?

[ehacker01]

I know that the stock tb is good for more than as mouch power I want out of my RB. I don't know where else to ask so I'll do it here since you all seem to know your ****. If a q45 tb is good if you have more than 450-500 hp, Would it be suitable for a 800-900 hp 454 big block chevy? I'm switching my malibu over to efi w/ megasquirt when the turbo goes on it. My intercooler piping will be 3". Any help you can give would be great.

[CursedGTR]

Apexi and Tomei both utilize the Q45 Throttle on 1000 HP plus Cars. Now those are six cylinders spinning at 9-11000 RPM, however, if it can flow the air required for a 6 cylinder to make big power I am sure it can flow the air for a V8 to make similar power, but I could be wrong. I got into cars while I have been here in Japan so my experience with American V8's has been nothing more than seeing them sometimes.

[themadscientist]

I would look to manufacturers of American V8 parts for my induction needs. BBK, Holley Barry Grant etc.

[ehacker01]

I will probably go with a bbk but it is the same size as the q45 TB. I just don't know how much more air the v8 will use. It is a bored out 7.4L (7.5L now) and revs to about 6800.

[300Plus]

RBtally is making his 540ci twin turbo motor setup and he is using a 110mm it swallows my 90mm lol

[Dano]

OT(since the topic is sort of OT anyway): Ehacker... you need to check and keep up to date on the regionals forum dude! Your missing our meets!

PS good luck with new setup on the 454, that sounds badass!

-Dan

[ehacker01]

OT(since the topic is sort of OT anyway): Ehacker... you need to check and keep up to date on the regionals forum dude! Your missing our meets!

PS good luck with new setup on the 454, that sounds badass!

-Dan

I wanted to go to the last one but A) it was during the Chiefs gameB) I had two midterms, a 15 page paper, and two presentations due the next dayC) I've got my winter wheels on my car so it looks like a$$

I'll keep an eye out for the next one. any tentative dates yet?

[RBTALLY]

RBtally is making his 540ci twin turbo motor setup and he is using a 110mm it swallows my 90mm lol

it's a 105mm .... and that is a little bit larger than the 4" pipeing I used on the intake side.... it's my new street car.

[ehacker01]

who makes the throttle body? how much power are planning on?

My plan is to get my malibu finished. I've got just about everything I need to finish it except new ring&pinion w/ spool, axles, EFI components, and some other small stuff. Once that is finished it should be in the 9's. Then I'll get a dually to pull the bu to the track and to get my bike to sturgis.

[RBTALLY]

Wilson Manifolds.. it will suport way more than u will ever make.

[matt_calgary]

that thing is an f'in beast! I think I'm gonna strap that on my little 2.0 lol

[RBTALLY]

I played around and used it for mock up on a GTP that built for a friend a few mounths ago ss mainfolds and a sheetmetal intake mani. yes it is big

[ehacker01]

So, do you know how to measure for vband? Is this a 5" v band? I assume the intake pipe is a 3"

[ehacker01]

exhaust side: