Thanks buddy!

^Here's the guy who pushed the 42# injectors prob harder than anyone, haha.

Had one of the fastest LSJ's at the time to. I miss your car man.

 

I think you should still get those pistons just so you can say you are right on spec. . I've always liked this car. You should bring it to the track to see what times you pull

 

In actuality my airflow was probably similar to yours, stock blower with a 2.8", GMR cams, turning to 7600rpms. I did mildly smooth the exhaust ports of the head myself when I had it off for the rebuild. I was WAY out of injector up top but the car was a monster.

Hit your car with a little nitrous and you'll see EXACTLY what I mean

I really miss my car at times, the shock factor it had when people just didn't expect to get raped by a cobalt is what made it fun for me

 

Haha, I wish, but my money needs to go else where as well.

Just spent a lot of coin on a wedding, haha.

Yeah, the track is on my list of things to accomplish.

Did u mess with the valves to run those gmr cams? Or just solid lifters?

Also, did they drop in with out issue? Or did you need to dial them in?

 

Both head and jumper wires

 

I added 78# Supertech springs IIRC, but that was it. The cams went in with no drama.

 

I have supertechs as well.

U didnt run solid lifters?? Wow, lucky u!!

There is a set of GMR cams for sale right now.

 

I didn't have them long before I split the block though. They were ticking

 

where are u planing on injecting the nitrous. i had it with the zzp s/c spacer for my meth and nitrous.

i have supertech in my gmr head also. ni issues with them...;.

 

i can bouch for this as he had my 2.8 80s only balt hurting so many feelings even more than when my lsj was turboed haha

 

if you update the rockers or if they are updated, please check the rocker to valve retainer clearance on the exhaust side.

 

what can you tell me about using stock rockers and updating them john?

 

Are you going to retune the car after the install?

 

there are two different iterations of stock rockers. To clearance latest LNF iteration rockers on an LSJ you have to shave the retainers or the rockers or install Supertechs 75 springs. Or use ZZP's which are good to clear.

 

This car just gets better and better.

 

I measured the pilot for the wheel bearing today and we will cut the spacers tomorrow. thats the plan sox fan, you must be happy these days. champ.

 

Awesome man, glad to see you got more goodies for the car. I'll definitely be checking back for results.

I have been out of the loop for a while, but were the GMR heads just a limited production run that GM Racing made for release? Sort of like they did with the GMR cams?

 

I want one now.

 

congratulations to getting married and to snagging one of these heads

 

convincing gmpp to do another run wasnt easy. no mas is the answer. they are gone. can be duplicated but the price etc new parts ? wow its a great deal. I have two of them one on each motor. not for sale. for my RL

 

Nice! Is this an OEM-GMR head or a copy to GMR specs?

Can you make some more detailed pics of the GMR port work? (exhaust only right?)
Maybe a few with a stock exh gasket on for reference?


Edit; just read the for sale thread, so an original GM-R head. (how did I miss this...)

 

Yep, I will take more photos as I start swaping in my supertech springs and cams

I'm going to use the rockers & valves that came installed in the GMR head. They are brand new

The head came with all the goodies for a nice easy bolt on job, but I want to swap in my supertech 75# springs and cams from my stock head. I even thought about running stock cams again since it comes with brand new cams. We shall see.

Didnt really spec out the nitrous install.

I was going to start looking into it over the winter, but the GMR head will be my project this year.

She goes under the knife next Monday.

I might.

Kinda want to see how everything runs on the GMR S3 hardware first.

Hasnt failed me yet.

The last new gmr head offered on this site was for sale in May of 2010. I had to let that one go, because I just spent some coin on the H62 blower a few weeks prior. I waited over 3 years for this, and couldnt pass it up. I knew this would be my last chance to snag one.

Yep, not many were made.

 

#75 valve springs no issue. Great buy, the car will make more power with less boost. Speedbuggy got some very good results back to back with the head change. I sold my one spare to him....

 

Awesome. Thanks John.

Can't wait to bolt it on.

 

I am John. Not champ yet though. 1 point lead with one event to go. I still have to earn it.


Sorry to hijack, Jeff!