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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Unofficial on November 07, 2008, 04:19:52 pm

Title: Changing Throttle Body
Post by: Unofficial on November 07, 2008, 04:19:52 pm

I came across a throttle body for a 350 on craigslist, and I want to buy it because I'm running a 305 TB on my 350 right now, which I believe is causing some problems. First of all, what should I look for on the TB to make sure that it's in good shape and that it's actually for a 350? Also, what years will be compatible with my '87 350 motor? Would I be better off changing the injectors or the whole TB? Details would be appreciated, so I can finish the job myself. Thanks in advance for any help.  :)

Title: Re: Changing Throttle Body
Post by: VileZambonie on November 07, 2008, 06:57:29 pm

Well what does he want for the throttle body

Title: Re: Changing Throttle Body
Post by: Unofficial on November 07, 2008, 10:13:34 pm

$40

Title: Re: Changing Throttle Body
Post by: VileZambonie on November 08, 2008, 09:31:58 am

For $40 bucks it's worth it.

Title: Re: Changing Throttle Body
Post by: Unofficial on November 08, 2008, 02:09:29 pm

So is there any way to make sure that it's a 350 TB? And would I be better off swapping just the injectors or the whole unit?

Title: Re: Changing Throttle Body
Post by: VileZambonie on November 08, 2008, 02:23:59 pm

Here's some part #'s for the 350 tbi unit and 305 tbi unit

350

Throttle Body Assembly
      Under 8500 GVW
         Manual Trans 17112497 $1266.41
         Auto Trans 17112514 $1399.64 
      Over 8500 GVW
         Manual Trans 17112511 $1724.14
         Auto Trans 17112508 $1737.76

305

17112484 $386.13

Title: Re: Changing Throttle Body
Post by: Captkaos on November 08, 2008, 04:26:38 pm

the only real differences in 305 vs 350 TBI is the injectors.  The same basic model was used on eveything from V6 to 454's.

Title: Re: Changing Throttle Body
Post by: DnStClr on November 08, 2008, 10:58:12 pm

Wow Vile. I didn't know they cost that much. I've seen em reman'd on eBay for $350. For $40 it's a good deal.