Finally completing my project. The last item to install was my throttle body(1989) it doesn't come close to clearing the hsr fuel rail(driver side) 90 fitting. should i buy a throttle body from holley? will the 89-92 52mm holley throttle body fit with no mods? what about a throttle body spacer, i seen one at the summit site. What did everyone else do? thanks for any help.

 

I bent the throttle lever out a bit as others have done and it clears fine.

 

i had no problems with my bbk 52 mm tb

 

You can bend it as earlier stated, I took mine to a machine shop and had them grind off the inner guide for $30. I've also heard of folks grinding on the 90* adapter. You may need to adjust your cruise cable as well, mine kept the throttle from closing. Definately do not get a spacer, they're like $100 and you'll prolly have to replace some of your cables plus another gasket. Sweet IROC!!

 

x2

 

i will try to grind the 90 elbow. I just found a deal on ebay for a 58mm accel tb so whatever it takes to get it to work. thanks for all the help! pmpn we have close to the same setups, I can't wait to get mine running!

 

Yeah, I wish I had a 6 speed... I can still spin them through third in OD, couldn't come close before the swap. I have a ton more torque (everywhere) now than stock TPI according to the butt dyno. You'll be happy with it. I have a bbk 58 mm TB and it still caught the elbow. I just dont like the idea of bending a part that rotates, plus those guides are unneccesarily tall. That really is a bitchin IROC, keep us posted how it comes along!

Tony

 

My 88 had no clearance issue.