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Messages - X33RS

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1
General Discussion / Re: Car magazines
« on: April 27, 2018, 09:44:41 PM »
thank God for that Larry. best thing for them, is to drive them here and there, with the added benefit of the smile on your face. I think there are many cars in general, out of sight still. It used to be a SS or Z was a special find. Now a days it is any first Gen that is somewhat clean. 20 years of dust on it adds to value somehow...



Yeah pure luck really.  I have to thank my neighbor.  He had just sold the property so I had to grab the Z and get it out of there.  If it wasn't for him selling the property, it would have been the end of that car.

2
General Discussion / Re: Car magazines
« on: April 27, 2018, 09:42:26 PM »
Gotta turn off spell check, otherwise my computer wants to spell it Camero, LOL    Probably why you still see it spelled that way occasionally.  Even computers aren't correct sometimes.

3
General Discussion / Re: Car magazines
« on: April 27, 2018, 12:37:52 PM »
Still seem to be popping up out here.  Not in the literal sense of "barn" find.  Most have been sitting in garages for 30+ years though.  I have 2 of them here that fit the description.  My SCJ Mustang still sits in obscurity since the early 80's.  I've only registered it and begun to drive it (once a year) in the last 3 years.  My 69 Z/28 was another one that hasn't been registered since 1985-ish.  So long that Arizona purged it from the DMV system and the car didn't exist when I put it back on the road 2 years ago.  Matter of fact I had it stored in a rickety shack out in Yarnell at a friends place.  I moved it back out here just a few months before the Yarnell Hill fire that killed 19 firefighters.  It burned that little shack to the ground.  If I had not of moved it the car would have permanently perished.   Pure luck.  It motivated me to stop letting the car sit around, LOL.

4
Mild Modifications / Re: Engine mod - thoughts?
« on: April 27, 2018, 03:49:44 AM »
As far as intake and exhaust runner size, as well as combustion chamber, there is no difference.  I've CC's original 2.02 heads and 1.94's that I have here.  Nothing about them changed in that regard. 

Not directly related to the post, but have you ever checked any 487X heads? :)
As far as intake and exhaust runner size, as well as combustion chamber, there is no difference.  I've CC's original 2.02 heads and 1.94's that I have here.  Nothing about them changed in that regard. 



Not directly related to the post, but have you ever checked any 487X heads? :)

I have 2, maybe 3 sets of "X" heads here and I believe one of them are 487's.  I'll dig through the stash this weekend and see.   What would you like checked on them?

I know one "X" set I have are from my 1970 400 SBC and are casting 441X.   1.94 intake but came factory with a  1.6 exhaust valve.  1970 400 was the only year and engine app they did that.

I should have said above that when there was no difference in the 1.94 and 2.02 heads as far as chamber and runner CC's, I was referring to the hump heads, specifically the 461's (no accessory holes)  and 186's (accessory holes) I have here.

5
Mild Modifications / Re: Engine mod - thoughts?
« on: April 26, 2018, 10:08:27 PM »
I didn't bother to mention this because most any machinists you go to does it, but it's pretty common while cutting for the larger seats they'll run the bowl tool down and enlarge the throat a small degree.  That's probably what you are seeing on a factory 2.02 head.

What head porters like about this method (installing larger valves in a smaller valve head) is that they can manipulate the bowl to their liking for best flow results as they have more to work with, rather than having a larger throat with less material to start with.  So there is an advantage to this process.

As far as intake and exhaust runner size, as well as combustion chamber, there is no difference.  I've CC's original 2.02 heads and 1.94's that I have here.  Nothing about them changed in that regard. 

6
Mild Modifications / Re: Engine mod - thoughts?
« on: April 25, 2018, 07:37:49 PM »
The 186 and 462 heads are relatively easy to find.  Most are of the 1.94 variant which isn't a big deal.   I never run a set of old heads without completely going through them, and for me that means new valves, seats and guides, positive seals etc...  While doing that it's not a big deal to upgrade to the 2.02/1.60 valve arrangement.   As far as I'm concerned, I'm paying for all this stuff either way so it's a no brainer. 
  So don't pass up a set of heads just because they're 1.94's, chances are they'll be priced cheaper anyway, and smart money says you'll be sending them to a shop for a rebuild so.....   
 

7
General Discussion / Re: Newbie Needs some help with a 69 Z 28
« on: April 23, 2018, 10:02:16 PM »
Thanks fellas

8
General Discussion / Re: Newbie Needs some help with a 69 Z 28
« on: April 21, 2018, 01:50:57 PM »
I have a question William.  Since it may possibly be related to the required tach option you posted.

When the required tach option went into affect (I'm guessing Feb onward??) would this also be the same time frame they changed the tach to the 6-8 configuration??  Or was that phased in a little later?

9
Originality / Re: 69 Oil Pressure Line Firewall Hole Location
« on: April 18, 2018, 05:34:39 PM »
The original one that William posted is my 12D Norwood built Z.  That grommet even has a part number on it if you can blow the picture up enough to see it.  From what I understand that isn't reproduced. 

As far as I remember (been a while since I've been under the dash) that hole doesn't run into anything inside and comes out right at the bottom of the heater box (the added piece found on console cars).  The Van Nuys examples that appear lower I think would be even better and would be right in the area where the front carpet is split as factory console cars had a 2 piece front carpet set. 

Mine however wasn't hooked up, and the firewall had so much gook and grime on it, you couldn't see the grommet.  The oil pressure gauge never worked and I had assumed it probably wasn't a factory gauge car, but I knew it was at least a factory console car.  Wasn't till I started cleaning the firewall that the grommet appeared.  I found remnants of the original line in the ash tray including the tall brass block fitting.  I surmise the oil line busted at some point and sprayed the firewall with oil, which over the years turned into accumulated gunk an inch thick.  Rather than fix it someone decided to just stick a pipe plug in the block.

10
Originality / Re: 69 Oil Pressure Line Firewall Hole Location
« on: April 16, 2018, 08:09:50 PM »
I'm glad it was useful for something.

11
Originality / Re: 69 Oil Pressure Line Firewall Hole Location
« on: April 16, 2018, 06:53:27 PM »
Ha, that looks like mine William  ;D
 
Back when you were helping me determine how the car came equipped.

12
Garage Talk / Re: Attending Hot August Nights - Virginia City Nevada
« on: March 31, 2018, 02:37:08 PM »
I've been a few times.  We always stayed with my sister-in-law so I can't be of any help on the motel deal.  But I would assume they fill up fast, and even though we are still 4 months out, I'm guessing many are already full.

As far as the event, it's a great time.  Basically a car show at every motel, and the swap meet I've found has always been fantastic.  Lake Tahoe is beautiful and plenty of other places to take your classic for a scenic drive.  Worth the trip.

13
Mild Modifications / Re: Exhaust Advice Needed
« on: March 22, 2018, 08:40:31 PM »
A good example of that  is our Z I posted above.  I built that engine with the same rules in mind in hopes of participating with that car.  Even with the valve spring limit, it still made peak power at 6700 rpm, I shifted in that video at 7,000.  I installed that cam only 2 degrees advance, wanted to make sure it made power up stares where these engines shine anyway, plus the stock camshaft is very healthy for a little 302 with 254 @ .050.   SBC has lighter valve train components than a Pontiac so that helps too.  For this car to run it's best it needs a bunch of gear.  Complete opposite end of the spectrum than the Pontiac.

14
Mild Modifications / Re: Exhaust Advice Needed
« on: March 22, 2018, 07:07:08 PM »
Video clips aren't working for me for some reason.

I ran both the American Thunder and the Force II FLowmaster transverse systems.   The American Thunder was hella loud with a ton of interior drone, after 6 months of daily driving I removed it. Switched to the Force II.   The Force II was more mellow, but oddly enough Flowmaster discontinued that system a few years back.

I ran both on my Formula, still have the systems stashed away.  I eventually switched my Formula to the same system I have on the Z I posted above.  I wanted the "X" cross over instead of the "H" was one reason for the change, and I wanted a stainless system was the other reason.  Plus the Pypes transverse muffler is touted as a straight through design and worth a little HP over the baffle/deflector style.  I was looking for a little edge in the Pure Stock racing category.

  Here is my Formula, setup to run Pure Stock with it's original 400 RAIII, running stock RA manifolds and the same Pypes 2 1/2" system.

https://youtu.be/er1z7PpqsnY     

Not only did the car pick up about 2 tenths with this system over the others, but it's also a very mellow sound, no drone in the car, very quiet to cruise down the road in.

Here's a ride along to get an idea how quiet it is inside the car.  Matter of fact, it's so quiet inside, I could hardly hear my car at all with the "open header" car next to me.  So much so that I quit looking at the tach for a few seconds and didn't even realize I had run 2nd gear out to 5700....Oooops.  It runs best shifting around 5200.

https://youtu.be/bpFwscg7uoY   

5200? I shifted my old TransAm 400 4 speed at 6100. :)

Even my current “old school 468” with 4 inch stroke occasionally gets above 6k.  :)

Don’t they at least let you run better valve springs???



They limit valve spring seat pressure to 130 lbs.    Which is plenty on a stock flat tappet to spin it up.  5700 doesn't hurt the engine and it runs fine up there, the car just doesn't go any quicker.   One big reason is because I have the factory cam advanced (installed on a 106 ICL) for a little more bottom end.  I did that because I only run a 3.31 gear in the car.  And that gear is in there because it's also a driver for us.  Cam is just the stock RAIII 212/225 @ .050 and .407 lift.

If I had my way the car would run best with a 3.73-ish gear, and then I'd probably move the cam out to a 109 ICL to shift the power up a bit and adjust shift points accordingly.  So there is more ET in it, I'm just not exploiting it.     However the quickest of the RAIII 400's in the class all pretty much run 3.73-3.90 gear and are right at high 12's and 107-108 mph on a good day.  Mine corrects to a 12.78 at 106 so I'm just about on par, without the rear gear.  So pretty happy with it actually.

15
Mild Modifications / Re: Exhaust Advice Needed
« on: March 22, 2018, 06:57:00 PM »
Video clips aren't working for me for some reason.
Same for everyone else? I just made them public, so maybe that will help. I don't have to do that with regular pics.

Okay working for me now, thanks.

Sounds pretty good, fairly mellow.

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