I'm looking at buying the trueleo intake of course, and with that you can get whatever tb you want for him to customize it to. However I was wondering what kind of tb's are out there that you can use with the stock tps and coolant lines? Is there a 62mm? I''d like to do roughly a 75mm so I can keep 3" tubing from air intake to tb. Is there any tbs out there besides the stock one, and not just ported ones?

I don't think there is a 2.8 out there that needs a 75mm throttle body.

The 1996-1997 3.4 DOHC had a 64mm unit, and the 91-95 3.4 DOHC had a 62mm TB, so you could try one of those, that'd work good with a highly modded 2.8 or 3.4 OHV.

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"all pushrod motor are better than the dohc because it has less rotational mass"
-rick17, MyMonte member, owner of a 3100 Monte Carlo LS

the 91-95 TDC TB is integrated into the upper plenum...

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Eric -> On the lookout for a new '87 GOLD GT, Hardtop, paint must be exceptional....
RIP
'87 GT Gold/Tan 4-speed
Soon to be a bottle fed T-top

quote Originally posted by coinball: the 91-95 TDC TB is integrated into the upper plenum...

And?

So cut it and weld it to a flange. From WCF, a 91-95 62mm throttle body on a 2.8l plenum, very clean setup.

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"all pushrod motor are better than the dohc because it has less rotational mass"
-rick17, MyMonte member, owner of a 3100 Monte Carlo LS

careful with the sizing. small increases in diameter make for pretty big increases in volume. like they mention above, the 3.4 DOHC throttle body would be the biggest you'd wanna go. there is no bigger breathing 60*V6 than that.

will a 3400 TB bolt up to a stock fiero intake? Are there any TB that will bolt up and work on a stock fiero intake?

[This message has been edited by goatnipples2002 (edited 10-30-2005).]

yeah what he said that was my question, any that arent bored out that is?

I've got a trueleo intake with a 86 GN TB off a 3.8 turbo, it measures 59mm and the tps and aic are direct plug ins. The sizing is about perfect for my 3.4. You have to do some fabing for the linkage since the butter fly is oppisite of a fiero and it doesn't have any cooling lines. I've got an intake like Aaronz34 posted if you want one, I'll sell at a good price

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85 GT 3.4
Auto 3.08
14.9 @ 90 1.9 60"

quote Originally posted by AaronZ34: And? So cut it and weld it to a flange. From WCF, a 91-95 62mm throttle body on a 2.8l plenum, very clean setup.

Now that I like, different from the original yet the same. Nice tig job too. Did you do that one? and whats the inside of the top of the intake like, didi you change anything other than the tube?

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technology is great when it works
and one big pain in the ass when it doesnt.
Detroit iron rules all the rest are just toys.

No I bought one from WCF and you have to change the plug ins. It has a seventh injector for fuel enrichment with a controller. I have everything if anyones enterested. Would have to make something for cruise control too

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85 GT 3.4
Auto 3.08
14.9 @ 90 1.9 60"

What he said, it is from WCF.

quote Originally posted by AaronZ34: What he said, it is from WCF.

OK what is WCF?
Web site?
Link?

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technology is great when it works
and one big pain in the ass when it doesnt.
Detroit iron rules all the rest are just toys.

West Coast Fieros

don't have the lin off hand try google

Lilchief: I'd be interested in your old setup. Looking to get rid of it? email me. chris@studiotwilight.com

Those intakes are still ineffiecient because the runners aren't any better flowing.

quote Originally posted by goatnipples2002: Those intakes are still ineffiecient because the runners aren't any better flowing.

I never said they weren't, but they help. That is probably one of the best, and cheapest ways to get good power from the intake side of things. That can be done for under $100, with good results. Every single intake manifold out there is innefficient, even a tuned independant throttle body setup like my own. It is as close to perfect as I can get, but still not perfect.

quote Originally posted by goatnipples2002: Those intakes are still ineffiecient because the runners aren't any better flowing.

the biggest restriction in a stock fieros intake is the neck just behind the TB

that mod provides a bigger TB, a superior flowing neck, and an increase in plenum volume

vafierro, e-mail sent

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85 GT 3.4
Auto 3.08
14.9 @ 90 1.9 60"