88'camaro305TBI

iTrader: (2)

Does anybody know what kind of shops i should look for so i can get my stock TB bored out to 48mm?? Turbo City has really ridiculous prices.
Also, anybody have the stock 48mm TB plates from a TPI car? Or know of a place where i can get them? Thanks

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Pat Hirsz
www.iit.edu/~hirspat/MyPage2.htm
88 305TBI
Mods:Hooker Aerochamber 3" exhaust, no cat,SLP 1 5/8" headers and y-pipe March pullies, no smog, 180 thermo,
14x4 K&N, 3.42 gears(open), Ultimate TBI Mods,AFPR,MSD(ignition,coil&wires),Edelbrock TBI Manifold, 190ltr/hr fuel pump,
Eibach springs with KYB's all around,
Harwood cowl hood, Z-28 wing, fresh paint(black)
120,000 miles, 5spd, T-tops
0-60mph-7.2s-Gteched

92 RS, 305TBI, auto, 3.08 gears, 180 thermo, glasspack (no muffler)

Intense92

Any good machine shop should be able to bore it out for you, but most shops charge $50 to $75 an hour, I'm a machinist and I just spent about 3hr. boring mine out, milling off the ridge above the bores, polishing it and making new throttle plates, I'm getting it ready for a 350 I'm building. If you could find the throttle plates yourself that would save them from having to make some to fit it.

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92 Camaro RS 5.0 5-Speed
L98 Alu. Heads
SLP coated headers
Dynomax cat-back
14" open air cleaner

1998 Dodge Ram SS/T

snflupigus

plates probably took the most time huh?

want to make me some 58mm ones? how much would you charge?

o, and yes, i said fifty eight.

if youve got the thing taken apart, i cant imagine it taking any longer than one hour to bore it out. the ridges etc, polishing, another hour. those plates probably took the third hour huh?

88'camaro305TBI

iTrader: (2)

I've already removed all the ridges and radiused the bores in, i just need to find the plates now and get it bored out. I have a friend who has a welder and knows how to weld, maybe we'll try adding some extra material to the TB and see if i can get it bored out to 2". But how do i go about polishing it and is it necessary?