WTB: 454 Throttle Body

[sytyguy]

Got a local buddy that has an early 90's TBI 5.7L powering his boat and he's hitting a wall at around 4000 rpm and has trouble getting up to plane. He has done quite a bit of research (he is a very good mechanic by day) and has narrowed the issue down to airflow and the stock 350 throttle body unit that's on it (it's overwhelmed with the upgraded heads and cam). So, he's in need a 454 unit (he's aware of the differences and modifications needed).

So, if anyone sees one whilst in the junkyard or knows of one, please LMK. A pre-1994 model is desired as GM changed the plugs for the IAC and TPS for the 454 in 1994 (IIRC).

Thanks in advance,

 

[92TYPHOON937]

Re: WTB: 454 Throttle Body

will keep eyes open in the yard next time i go

 

[blacktyaffair]

Re: WTB: 454 Throttle Body










Don't remember what year it is but it's from a 454. I'll post up a pic tomorrow.

 

[blacktyaffair]

Re: WTB: 454 Throttle Body

A little dirty but should clean up. Even has a nifty throttle body to Q-jet bolt pattern adapter.

 

[Icarus-54]

Re: WTB: 454 Throttle Body

Mike,I have a Holley tb,670 cfm has the 3 bolt patern with early iac and tps.

 

[sytyguy]

Re: WTB: 454 Throttle Body

A little dirty but should clean up. Even has a nifty throttle body to Q-jet bolt pattern adapter.

You rock. How much? Shipping to 31308. :tup:

 

[blacktyaffair]

Re: WTB: 454 Throttle Body

You rock. How much? Shipping to 31308. :tup:

VIP treatment at Shindig with little to no docking.

Let me get her boxed up and I'll let you know what shipping will be. PM me exact address.

 

[blacktyaffair]

Re: WTB: 454 Throttle Body

It's almost there. Should be there Tuesday. :tup:
http://wwwapps.ups.com/WebTracking/...umber1=1Z2V05T30393932865&track.x=0&track.y=0

 

[cloneman315]

Re: WTB: 454 Throttle Body

You sure the engine can pull the prop pitch?

 

[sytyguy]

Re: WTB: 454 Throttle Body

You sure the engine can pull the prop pitch?

Yes.

 

[DaveP]

Re: WTB: 454 Throttle Body

In the old days, we'd put a vacuum gauge on the engine. If the gauge read 0" vacuum, it wasn't the carb, or throttle valve size holding it back.

 

[sytyguy]

Re: WTB: 454 Throttle Body

In the old days, we'd put a vacuum gauge on the engine. If the gauge read 0" vacuum, it wasn't the carb, or throttle valve size holding it back.

Great minds think alike.....that's precisely how he determined this. :tup:

He's an old school guy too. The first giveaway was that he pulled a carb'd setup off (Q-Jet IIRC), put the TBI on and lost 500 rpm up top. He verified his suspicion with a gauge.