DemonZ

Bump, thinking the same...

Jeffp's car is also 3.0L ?

Thanks Speeder. I'll opt for the 68#'ers for my L28T. 72's are close, but don't want to get too greedy.

IMO the real weakness of the Monza Z header is in the merging at the collectors. Look inside the collectors, and you'll see the fitter did a quick and rough job. Extra tubing inside the collectors make for some restriction you don't see from the outside. Depending on your skill, time, and equipment, cutting the collector off then trimming off the excess tubing and rewelding it wouldn't be too hard. If it's all stock I wouldn't bother though.

thinking about 68# ones like these: http://cgi.ebay.com/ebaymotors/8-Chevy-Camaro-Corvette-68-lbs-hr-Fuel-Injectors_W0QQcmdZViewItemQQcategoryZ33554QQihZ019QQitemZ8046323671QQtcZphoto I plan on 350 RWHP minimum, with headroom for 500RWHP. Car is street strip weekend warrior. Idle quality is important to me, and I do not want a toxic, fumy car. The plentiful 440cc supra injectors are smallish, and I don't want to run a rising rate FPR. What's the biggest I can run, maybe even running sequential?

I'm glad they are on their toes. I wonder what tipped them off?

My fuel cell came with 2 Walbro's installed and didn't want the hassle of replacing them with an 044 and rewiring everything. Since there are 2, it's an added margin of safety. If I had my choice though, I'd rather have the Bosch 044.

Shoot! That's this weekend?!! I have some relatives coming in on friday and must entertain. Don't think the 2 75+ year olds will have fun at a car show. Please take pics and post, so that I may live through you.

Thanks for the offer iskone. I'm in Renton. Haven't decided on just where to take it for tuning yet, I'm still a ways off from that. I still need to settle on an ECM and injectors.

Great to hear! Funny I got new SS +3 exh. valves TURNED DOWN 2, so I wouldn't have to eyebrow the block. Oh well, shoulda woulda. I think I will keep the cam after all. Thanks.

I'm not familiar with DD. As far as I can see, 7181 (hollow core, 2 degree adv.) and 7151 are the same. If so, then the chart above shows what a 2 degree advance would do (if DD claim of 5% accuracy is true). It would seem then that the curves "should" resemble more of a phase shift rather than an absolute lifting of whole curve since adv/ret. of camshaft mostly moves the powerband up or down the rev. range, generally speaking. The chart shows ~25hp/25# peak differences, not a side to side movement. Am I missing something? The good news is, there is a real world user running 7181 and making good power up top!! WooHooo!!! jgkurz that is what I wanted to hear! What's the idle and driveability like?

I think I solved the 4 degree discrepancy. My cam card says the whole cam is 2 degrees advanced (upper right hand corner). PinksZ cam card says nothing (I assume its zero). Two cam degrees advance would make 4 degrees on the crank, and that would explain the VO/VC differences in the two cams. So it turns out the two cams are the same (except on mine whole cam is advanced 2 deg.)... whew! I would rather not play guinea pig right now as I have all sorts of issues and sub systems to sort out before I can run it. So I just want baseline componentry for starters. To me, the cam is still questionable in the 44 vs 57 overlap issue. I hope to have that resolved soon.

I still have not got a call back from Ron. Yes, my cam came with internal oiling holes (no plug in the end, glad I checked). It is puzzling why mine and the PinkZ have different valve events. But what really has me wondering is the 44 overlap I asked for vs. the 57 we got. If he doesn't call me back tomorrow, I guess I will have to give him a call, AGAIN. I don't know why this feels like I am pulling teeth.

Back in the day, Paeco used to sell an L6 stroker that was a custom forging, and not a rewelded reground oem crank. For ~2.5k I assume it had more stroke than the LD.

RE: PinksZ Camshaft related issues have not been ruled out. It has not be verified that cam timing is ON with any precision (last I read, nobody degree'd the cam still). BTW, one tooth off is 18 deg. IIRC. Also 44 vs. 57 deg. of overlap is significant. The sum of small slop here and there could account for premature redline. A bunch of small errors can add up to a big one. Until verified, it's guesswork. RE: Z-Gad Isky grind A seperate issue, simply stated is, it was not what I had ordered. I "thought" (per Z-Gad specs.) I ordered a plain burger, and I got a cheese burger instead, hmmm.. but wait maybe I DO want a cheeseburger?! For me at least, the calories of gross power is not the end all. It's the taste! It was Z-Gads impression of the well roundedness, flexability and smoothness that sounded yummy to me. Ultimately, I am not pointing fingers or want to place blame or bad mouth anyone on this. I just wanted to give some background from my experience so it would be useful to others that might want to go down this same road. Most of all, I am here to learn. So anyways, Paul, I am curious in your machinist capacity, why are two identically spec'd camshafts this different (look at mine vs pinks-Z print out). Looking at the timing events, mine are 4 degrees different across the board from that of PinksZ. I understand there are tolerances in the real world, and dimensionally speaking, I'm not splitting microns here. I would not guess that .0001 or whatever tolerance the cams are ground to would translate into several degrees difference.

You Fast. If my Clutch Specialties comes with a alignment tool, I'll send you my old one. Cheers!

After being put on hold for 10min at a time, and calling every 30min. (he gets in after 2:30 now) I finally spoke to Ron Iskendarian himself. He said there is no such thing as a 266 deg. grind, as his master is 268 and that is what they have on file. (He recalls that I did specify 266, but when he went back to the grinder, HIS spec. was 268 , therefore he just pulled the master and put it into the machine that spits out what in my mind is our "questionable" cam). I am guessing its a machine like how they duplicate keys. He was nice enough to explain his process for a couple minutes and starts to get a little frustrated, I think from me attempting to question where the discrepancy might lie. All I have to go on is what Z-Gad wrote. I mention that another car running the same cam is having problems, could it even be possible that... He puts me on hold again. I gather my thoughts while I wait. About another 10 minutes later. He comes back on, and sense I am testing his patience again. "Ok I'll tell you one more time... there is only one cam we have that is close to that grind...". At this point, I feel I need to interject him before he goes down the same line and puts me on hold again. I politely interupt, "there is no way you could've done a one-off with 266, and did a master later on with 268?" Ron: " No. I do all the development work...." and there would've been a master or he would know.... or something to that extent. He goes onto assure me that they wouldn't screw me, and that the 2 degrees would not make much of a difference. He continues with pretty much the attitude that the error is on my end (I don't know if it is), but I would just like to be clear on what I ordered. Out of fear of being put on hold again, I politely interupt, "sorry to interupt but, I also ordered 44 deg. overlap..." Ron says, "yes, thats the only way it will work...". I reply, "but I got 57 deg. that's what it says on the printout." This made him stop and think. He said he'd pull the file and call me back. That was 4pm. I have my fingers crossed. It took me 4 calls the first time just to get the cam ground in the first place. Each time he said he'd call me back, I had to call him to make a connection. He seems like a nice enough guy. He even threw in a T-shirt for my troubles the first time, and got the cam out to me in about a week. But Ron sure is a busy guy.

It looks like only the exh. are off. Interesting the same grind has a different timing table. The overlap is off too. Got 57, should be 44. I will ask for the correct one.

I ordered the Isky cam with Z-Gad specs. Problem is when it came, the exh. spec. is off by 2 degrees from what I ordered. Per spec. it's supposed to be 266, I got 268 (Isky print out, and stamping on back of cam). What would you guys do? Z-Gad watcha think about 2 measly little degrees?

I ordered the Isky cam with Z-Gad specs. Problem is when it came, the exh. spec. is off by 2 degrees from what I ordered. Per spec. it's supposed to be 266, I got 268 (Isky print out, and stamping on back of cam). What would you guys do? Z-Gad watcha think about 2 measly little degrees?

Not trying to thread jack, but I have heard that the Bosch units are among the quietest around and are reliable. I also read a in other forums that the walbro's can lose some of their pressure...http://www.theoldone.com/components/fuelpumps/ A friend ran the Aero. 1000 and it was pretty buzzy (street/strip car) Personally I am looking into the Bosch motorsport 044 pump (good for around 700bhp) and wondering if I should wire it intank for a Fuel Safe fuel cell or if I should run it inline. I ran a search but could not find the pro's and con's of such an install. My primary objective is safety and quiet trouble free operation. Is hard line w/ compresson fittings safer/more durable compared to ss braided air craft/Earls type fittings?

Those are Black Racing.

That looks like the real deal. Glad it worked out for you. Mine should be here any day. BTW, why didn't you respond to my PM?

That is very very very sad. as I understand it, the fundamental problem is that the area is prone to future hurricanes, and since that part of LA is continually sinking, and below sea level, it's sort of trying to avoid the inevitable again. That makes any business proposition hard to justify, and I can undertand why PRIVATE business money inflow would be slow. Until a more effective way of coping with future floods is found, I can't really see people wanting to stay there and call it home.

For the considerable effort in making these work, what is the estimated improvement over a ported stock piece in terms of outright flow and boost response?