white3800camaro

iTrader: (6)

Which is a better piece?
The Summit one is lightly used, can be had for $100.

Or a stock one, ported and powdercoated?

I am not sure who does the best job on the stock units so suggestions would be great!

96capricemgr

iTrader: (1)

The aftermarket all offer IAC hassles so for 52mm I would always suggest a reworked stocker, one vendor can even sometimes get 54mm out of them.

I wouldn't bother with aftermarket unless doing 58mm.

MonmouthCtyLS7

iTrader: (6)

Why change it, if I could remember correctly back to my LT1 days the 48mm is just as good as a 52 or 58 unless your pushing some serious air...

96capricemgr

iTrader: (1)

both sides of that argument have been documented "in their favor".
That said it does warrant us asking him what is done to the car an a note about the A4 can be harmed y a larger TB if you don't compliment it with a tune or shift kit.

white3800camaro

iTrader: (6)

Just a basic rundown

LE 228/236
11.8:1 CR
All boltons
100 shot
3600 stall
built trans
dyno tune

white3800camaro

iTrader: (6)

Which vendor does them?

96capricemgr

iTrader: (1)

I bought a used 58mm BBK and dealt with the IAC hassles but I know I have seen 54mm advertized on ebay and that the vendor had a separate site too so some googling would turn it up.

BTC

Is the OEM throttle body 48mm?

bowtienut

iTrader: (1)

.Yes.

maxplusten

iTrader: (4)

I run a TPiS 58mm and so far no IAC issues so far, not sure if there 52 is the same story