imported_fivepointzero

so ive been doing some research on the 70mm throttle body, so i toke my stock one off and was looking at it today, is the 70mm bored out completely pass the butterfly or does it stop by the lip before? was thinking about boring mine out to 70mm. so if someone can help me out it be great. thanks

BIG NICK

You should have a 70 mm Egr spacer also,if you mount the 70mm to you old egr spacer it will need to be "ported"..I have a new polished 70mm spacer at my shop..

imported_fivepointzero

oh yeah for sure il lhave that done while im doing the throttle body, but would i have to be going right through with a new butterfly or stop by the lip before

BIG NICK

Sorry I miss understood your post,you cannot port the stocker to 70 mm.I believe 64mm was max.The butterfly would have be be replaced.It would be better just to pick up a T body/spacer..

8 UR VETTE

Yup my old one was a ported stock 64mm. I would do a 70mm.

2TONE_93GT

iTrader: (3)

My old one was ported to 64 as well, i ended up just picking up a BBK one

Keep us posted on what you do. But you should be able to find a ported 64mm TB for $50 canadian.

imported_fivepointzero

allright thanks guys, well i was thinking about replacing the butterfly also because all this is costing me nothing so i might as well try and see how it comes out, so ill try and port it out to 70mm all the way trough, replace the butterfly, and do the spacer as well, ill let u guys know how it comes out thanks for the replies

BIG NICK

Good Luck!!

imported_fivepointzero

thanks bro

imported_fivepointzero

got the spacer done to 70mm, and the tb inlet and outlet 70mm, centre 64 mm (max), gonna be making my butterfly tomorow, ill post pics hopefully tomorow when im done and let me know what u guys think.

imported_fivepointzero

this is my tb and spacer gonna be poilishing them soon

imported_Stang Seller

Dont bother going with a 70mm on a stock 302. Most bolt on Stangs will work the best with a 65mm, as a 70mm or larger will cause you to lose more low end power than you would gain in the top end. Those pics look good, how did you port the holes? It looks like you went through on a couple of spots. Are you going to fill those spots with putty/JB Weld or weld em and clean them up?
SS

imported_fivepointzero

yeah didnt expect to go through like that guess should have been paying more attention. did them with a lathe machine, gonna patch it up with the jb weld, and polish that and the spacer, and thanks for the info will take that into consideration