Thread: 3.4 S/C Pulley

I drove the Imp to work for the last (2) days, which is expressway driving. With regular spirited driving I don't get any kr, when I put my foot in it I get 1-2* before the tranny shifts. The 3.4 really woke the Imp up, I have an appt. to have the lim done at the stealer. The car will be parkled until that day comes, then I'll do a seafoam clean up and finish installing the other items.

good luck. i cant wait to get more boost

the step from a stock pulley to a 3.5 or 3.4 is crazy. then just think of what a 3.2 or 3.0 would do.

ahhh must be nice!! i might have to go methy myself

im sure youll hear about how my setup comes together. im almost done putting it all on..but i have another problem a-brewin'....low oil pressure...

oohhh nose!!


deff looking forward to it. im really startin to like that set-up myself.

The Imp goes in for the Lim repair tomorrow, gotta love a factory warranty. I hope to get her back by the weekend, so I can install the plog & crossover. I swapped the overkill pcm with the factory, so I don't get a surprise flash update and ruin my overkill. I always do my own work, this is the first time in 20yrs that I let someone else work on my car. I'm going to miss her it's going to be a sad day for me.

Good info guys. I just bought a 3.4 for my 99 GTP and wondered if it will make much of a difference. I have a DHP PCM from PFYC. I'm gonna get a tune after it is installed but will have to drive it a bit first.
I have a wizaired CAI, Borla Exhaust, U bend delete, and Will be installing SLP headers next month. I can't wait!

Yeah I bought colder plugs and a T-Stat. I already have fuel rails and 42.5lb injectors so fuel delivery is no issue. This summer is a stage 3 IC, port the S/C and then may need a Tranny LMAO.
I got tired of all show and no go. Time to make this thing scoot!

I got the Imp fixed, I'm back in business. I spoke to the mechanic and he said it wasn't bad he seen worst. The oil was just seeping on the outside, no internal breach of the gasket. The Lim, valve covers, coolant and oil was replaced. Here are the part #'s from the receipt for those interested. 89017825 gasket kit, 24503937 valve cover gasket, 12346290 coolant, 12378521 sealant, premium oil, 12490147 filter.

I sure was, now I can finish modding and enjoy.

I changed the plugs to AL 104's, the install wasn't bad I had minor difficulties with removing the heat shields though. I didn't reuse them or tilt the engine forward, having the right tools = priceless. The next change will be cake without the h/s, I reused the stock wires for now. I also changed the S/C oil and replaced the cruise control buttons the lettering was coming off.

Btw, the plugs that were removed were AC Delco Iridium #12568387 and the gap was a little more than .60

Originally Posted by DerekG12

right now my car is stock can you drop the pulley size with no bad ramifications and without further modification?

No. Otherwise GM would've done it to start with.

Originally Posted by DerekG12

right now my car is stock can you drop the pulley size with no bad ramifications and without further modification?

Go search for some threads. There are MANY about why you can't drop a pulley size.