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Messages - hgger69

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16
Originality / Re: Big block heater hose question!
« on: April 06, 2018, 05:44:34 AM »
Supply hose to core is 5/8 inch from intake manifold.
Return hose is 3/4 inch to water pump nipple.
Thanx Everett, but this means that the ASM is completely wrong then?? :-[

17
Originality / Big block heater hose question!
« on: April 05, 2018, 01:34:20 PM »
Hi,
Im going to install the heater box hoses on my ZL-1 build but Im not sure which one goes where?

The ASM shows this, which looks nice but is it correct?



I did some search on the net and found this thread that John Z commentated the same question with the opposite place for the hoses:

The hose from the outlet fitting (manifold) always goes to the bottom heater core fitting, and the hose from the inlet fitting (water pump) always goes to the top core fitting; that way the core is always full of coolant and there's no "gurgling" sounds from air bubbles audible from inside the car.

 The upper hose from the core back to the water pump is slightly larger in diameter so it always has lower pressure (carrying the same volume of coolant) to maintain steady coolant flow at low rpm so constant temperature control adjustments by the customer aren't required.


What du you original guys say about this topic?  ???

18
Mild Modifications / Re: The Hugger goes ZL-1....
« on: February 26, 2018, 09:35:03 PM »
I agree on both points. Factory intake when possible, but very nice installation so far.
Thanks, I really appreciate your comments!:)

19
Mild Modifications / Re: The Hugger goes ZL-1....
« on: February 26, 2018, 05:51:22 PM »
I like your day two Edelbrock but for what you are doing I would use the L72 Al intake. They are not that expensive and they do sell a repop, Your setup just looks so factory installed.
Many thanks for your kind words, Kelley!  :D
Ill stick with my day two intake cause I like it but Ill consider your advice for the future...
My goal with the car is that should look almost factory but with modern touches were its not obvious... :P

20
Mild Modifications / Re: The Hugger goes ZL-1....
« on: February 26, 2018, 11:23:35 AM »
During wintertime its a lot of other things do to with the family so I have to sneak out in the garage for my quality time... ;)

Due to the failure of my old distributor I had to order new parts from US & A and they finally arrived the other day. My choice was a HEI from PerTronix and their FlameThower model D71000 with the latest HEI III module and adjustable rev limiter. Got a set of matching cables from Taylor mad to go over the valve covers:




Also got the ugly green gaslinkage return spring:


While my combo of a ZL-1 and a TH350 not are the most common thing to do my old bracket for the kick down cable didn't fit.... :( I couldn't find anyone to buy so I decided to do my own! With some old school paper work I got myself a good looking prototype.


Ludde TMW, The Magic Welder, my pal made one ZL-1 inspired from aluminum.


Did a test fit together with the ugly green thing and it turned out ok, I guess! ;)


..after some adjustment and a sand blast it turned out like this:


Before mounting the HEI I changed the internal springs to most correct ones for my application and set the rev limiter to 7500 rpm! :D


Then I realized that I hadn't test mounted this very masculine distributor in the Camaro, oops...will it fit between the air filter and firewall...?




It did! :) ...and now I realize that maybe the engineers at Chevrolet already planned for a HEI when they made this cowl air cleaner or is just the OEM:s that are done this way?

With the knowledge the the HEI would fit I adjusted the oil pump gears and found a still position for the HEI, mounted the cables and voil. :D


Sure, it's a lot of lack of space but hopefully it will work.




The radiator has gotten som fresh paint and been mounted in place together with the new fan shroud:


Talking about the shroud you can se how bad it fitted at the top as a "bolt-on"...but after some adjustment I think it will work great!


Also mounted the correct upper hose together with the correct, and quite useless, clamps.



Thats all for the moment, folks! :D

21
Mild Modifications / Re: The Hugger goes ZL-1....
« on: February 09, 2018, 11:46:40 AM »
Those exhaust clamps appear to be nice heavy duty units..  :)
Gary, they truly are!  8)

22
Mild Modifications / Re: The Hugger goes ZL-1....
« on: February 08, 2018, 09:17:22 PM »
You guys are very creative. Looks good.
Many thanks, Kelley! :)

23
Mild Modifications / Re: The Hugger goes ZL-1....
« on: February 08, 2018, 07:56:17 PM »
Well, were struggling on with the missing parts for completing the build.....  :P

We realized that the ZL-1 Camaros used the 4-rows radiator with the curved-neck so we did a rebuild of the 3-row big block radiator that came with the car. We think it will be ok with just a 3-row cause the ZL-1 engine maybe needs less cooing and I don't have an AC!? My friend att the local radiator shop once again stepped in a made a nice work on the radiator:


We think we got the angles ok:


With some fresh paint on it and test munting of the new fan shroud it looks like this:




I had to order new fan shroud clips from USA to complete the rebuild since one were broke and the other one missing:




Ive also finished the work on adapting the down pipes to the exhaust system already mounted on the car.
I started to cut the pipes to get a rough shape of them. Then I made some cuts in different places on the down pipe to rebound the pipes where I needed.
Some bits of the pipes that I don't needed:


Test mounting on car:




It the passenger side pipes that needed most work. Then I took the pipe to my friend who did som welding on it.


Complete with paint it loks factory, huh? :) ..and yes, we had to weld another lambda probe mount while the old one was in the way of the steering gear arm! :(


Before mounting on the car I got hold of very nice pieces of joints and clamps from our local speed shop.





24
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 28, 2018, 06:35:27 PM »
Hakan, I think I'm wrong. There may not be a hose with a molded curve for 69 BB. I was thinking different year and I should've checked before mentioning, sorry.  :-\
No worries, John! ;)

25
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 25, 2018, 06:51:18 AM »
This is great. Thanks for sharing.
Thank you! :)

26
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 25, 2018, 06:49:48 AM »
Thanks for the little video! What a pretty machine!!
You may check the next time you need to order parts, I'm pretty sure the correct molded bypass hose (between the intake and water pump) is still available so you won't have to live with that kinked piece of straight hose.  ;) 
Great work and thanks for sharing!!
Great to hear, John! :D
I thought I had the correct hose on the bypass and it's not molded...never seen a molded one? Was it molded from factoy you mean?

27
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 22, 2018, 09:24:47 PM »
Almost looks too good to drive.
Thanks Kelly, you're to kind! :)

28
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 22, 2018, 03:36:56 PM »
I just have to update while you guys dont want to stop nagging me..... ;D

Weve now reached the critical moment in this project when the engine is going back into the Hugger. The car isn't aware of whats going to happen with it in this very moment:


With the engine still mounted on the frame from the dyno its easy to lift it with help from two Camaro-friends and a reliable engine crane:




We moved the Hugger sideways in ny garage for easier access to the engine bay during the surgery...anf of course we used sterile clothing.  ::)


Oh my....  :P


We were two guys watching the engine bay and another running the crane 


Tada, the ZL-1 really fitted but its a tight fit!  ;)


After we mounted the TH350 and engine together we pushed the car back to its parking place for further and smaller surgery!




Here are the temperature-controlled clutch, which was standard on 427 COPO,  and the for 1969 original seven-blade fan mounted:


I couldnt hold myself so I just had to test mount the carb and cowl air filter...it feels so unreal but even though so right!  8)


A bunch of things still remains do to, but every smal step is a step towards getting the Hugger on its wheels this summer!  ;)

29
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 18, 2018, 08:20:43 PM »
Its not just a simpel engine swap when you go from a small to a big block...nope, why go esy when you can go hard?  :P

One of these other things is to also swap the heater core. As you all know the SB has its water out- and inlets closer to the center but thats no good when the big block and valve covers are in the way of the hoses.

When we was fortunate to win ROTM here last year I ordered a BB heater core from NPD for the price money.
Do you think it fitted?..  ::) You can see the new core to theft and my old SB core to the right.


I had to let our local radiator-shop make a new one and the only thing we kept was the pipings. It turned out very well i think ut the price money is long gone...  :-\


I was happy to one last time crawl under the dash and install the new heater core...


Hmm, doesnt the pipes seem to be a bit too short?  ???


Yuup. they are! Back to the radiator-shop for a quick do-right-do-again..here is how it turned out:


Much better! ;D


Besides the heater core Ive also mounted the correct cable for the starter:


Now I also now the correct place for the minus-cable on a BB:


I also wanted to have both a oil pressure gauge AND the original oil pressure indicator in the dash wired so I have to use this solution:

30
Mild Modifications / Re: The Hugger goes ZL-1....
« on: January 14, 2018, 06:50:18 PM »
Despite all the hassels we had and while the engine was in the dyno stand we decided to do some runs to se what we could get out of this first engine build of mine!
For you guys that that have been demanding a video, I have to disappoint you, sorry!  :-[
We were too busy to check on the engine and dyne during this test runs so i just have these two short vids on it. Taken with my iPhone 7.

First one from brakin the cam in. The smoke is from the WD-40 I used for protecting the manifolds from being rusty during storage.
https://www.youtube.com/watch?v=FCTeNUntxtg

Second one is from the gauges of the dyno control panel. Our ZL-1 sounds eager and the throttle respond is ok despite the saggy ignition system!
https://www.youtube.com/watch?v=Ycc9ReWjmpQ

The original ZL-1 from Chevrolet made around 376 hp at 6750 rpm, dyno tested by Bill Porterfield, with a similar setup as ours with manifolds, original air filter and alternator mounted. Our goal with this build was to get as close as Chevrolets original ZL-1 as possible but within our conservative budget. Therefore we had a sligthly lower compression ratio, a used Holley 750 carb and, as we discovered during the cam break-in process, a not-so-good ingition system! We do have a more race influenced intake but that aren't always the best way to go.. ???

We put a safety stop at 5700 rpm and we then reached around 420 hp, with the curve still rising....we achieved the goal with a margin!  :P
The torque landed one 544 Nm (401 ft.lb.) at 4100 rpm.

We are very satisfied with the dyna results and with a new ignition system, bigger carb, headers and taking the rpm ut to 7000 were convinced that our version of the ZL-1 easily could reach 500 hp!  8)
But the goal was NOT to get as much as possible out of it, it was go get a rather street friendly engine and when I really like manifolds on a ZL-1 Ill keep it like this... for a while at least!  ::)

The engine is now at home waiting to get back in the Hugger again!

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