Ok, doing a le2 emissions set-up on a 94 camaro, block bored, mahle pistons, eagle rods, going w/ the 30lb svo injectors, I would like a little info on porting my own throttle body and also what to do about an opti, I've read about vented/not vented? does any opti fit all years of lt1 motors or do I need a specific one for a 94, also where to get one, factory stuff seems a little high dollar. Also any recomendations on plugs/wire set-up for this?

 

Leave the throttle body alone. Unless you've got some precision machining equipment porting the throttle body is not something your basic at-home mechanic can do. There are a few people that port stock throttle bodies.

Your 94 came with an unvented optispark. If you wanted a vented opti, converting requires some specialty parts, like a new timing cover, optispark vacuum harness, optispark electrical harness extension, 95+ timing chain (or SBC equivalent), 95+ cam with the stepped nose, etc. Or you can take a risk with the MSD cap/rotor which includes vents.

The factory stuff is a little more high dollar yes, but it also has a fairly high reliability rating compared to all of the other stuff out there.

For plugs/wires, NGK TR55 (3951) plugs and MSD 8.5mm routed in stock locations have served me very well for the past 2 years.

 

MSD sells optispark with a vent ready to install, when i did mine i did not have to replace my timing cover. Just look for it on summit MSD-8381

and no not all years are the same 92-94 and 95-97

 

OEM optis are around $350. For your TB leave it alone or buy a good quality aftermarket 58 or ported stock 52 or 54 off of ebay

 

what they said!

 

ok thanks for the advice, I"ll prob just hold out on the throttle body for awile and focus some money on other stuff.

 

I would open the intake to accept a 58mm while you have it off the car. You don't want to pull that later when you decide your ready!

 

yeah the intake is at lloyds with the heads.