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Author Topic: 69 Z28 passenger exhaust manifold pic  (Read 7454 times)
69Z28
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« Reply #15 on: November 11, 2013, 05:02:18 PM »

Does the big block and the small block share the same heat valve? I wonder if I have one for a BB. Huh!?
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
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« Reply #16 on: November 11, 2013, 05:21:08 PM »

One '68 327 I had, had the weight parallel to pass frame rail with counterweight to the front.
I would think the valve would be universal fit as it would match manifold ID.
A '64 Impala 327-300HP, ram horn manifold had the weight to the rear of manifold.
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x77-69z28
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« Reply #17 on: November 11, 2013, 06:13:16 PM »

Gary, my 69 is still running hooker headers, but I just looked at my exhaust manifolds for the 70 Z project. I cut off what was left of the original exhaust. My heat riser has the weight to the outside, parallel with the frame rail. Being 57, I can't post pictures. I can email them to you.
Buddy
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69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
11 cts-v blk diamond  edition wagon 556hp sick!
69Z28
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« Reply #18 on: November 11, 2013, 08:18:23 PM »

Gary, my 69 is still running hooker headers, but I just looked at my exhaust manifolds for the 70 Z project. I cut off what was left of the original exhaust. My heat riser has the weight to the outside, parallel with the frame rail. Being 57, I can't post pictures. I can email them to you.
Buddy


I sent it to you in the PM you sent Buddy. Can we assume the 70's were the same?
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
69Z28
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« Reply #19 on: November 11, 2013, 08:41:26 PM »

One '68 327 I had, had the weight parallel to pass frame rail with counterweight to the front.
I would think the valve would be universal fit as it would match manifold ID.
A '64 Impala 327-300HP, ram horn manifold had the weight to the rear of manifold.

Hey Everett like what's in this pic. LM1 350/255 69 Impala. The one I have in hand and the one I'll be be getting in a few days are exactly like what's in my 69 Impala in this pic.
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
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« Reply #20 on: November 13, 2013, 02:40:53 PM »

OK. Just got the other one in today. Same as the one I already have. Still think both are wrong for the 69 Camaro Z28. Anybody else have a known good heat riser valve for a 69 Z28?
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
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« Reply #21 on: November 13, 2013, 08:17:39 PM »

Gary there is a NOS one in the box for Z- 28  part number 3887023 on ebay # 190688527946. Very $$$$
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" He who knows naught, knows not that he knows naught"  It's not you...  It's just the way my brain is wired.
69Z28
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« Reply #22 on: November 13, 2013, 09:01:58 PM »

Compared to this pic the 2 I have are wrong then. Unless other members show a clear view of an original I guess we'll never really know. Can anyone confirm what is correct? So far JohnZ has the best overall view that would be the same as the pic. $240.00...that's a load of change. I paid $5.00 a piece for the ones I have. I'll just keep digging. The right one is bound to pop up.

Anybody have any idea what the cast # 3746844 heat riser goes to?
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GaryC

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« Reply #23 on: November 13, 2013, 09:10:35 PM »

that NOS one appears to be the same configuration/appearance as the one on JohnZ's car..
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
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« Reply #24 on: November 14, 2013, 10:45:27 AM »

Gary, I have my original 69 Z manifolds on a shelf in my basement. The heat riser is with them. I can take a pics if you want, and forward to you.
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Jimmy V.
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« Reply #25 on: November 14, 2013, 01:36:54 PM »

Anything at this point will do. I need to figure out what others have so I can determine if I need to keep looking for the right heat riser of what I have is correct too.
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GaryC

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« Reply #26 on: November 14, 2013, 03:14:57 PM »

Gary, something happened to my camera. All pics are coming up blank! It looks like johns z's, but the weight is to the outside parallel to the frame rails
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69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
11 cts-v blk diamond  edition wagon 556hp sick!
69Z28
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« Reply #27 on: November 14, 2013, 03:29:54 PM »

Gary, something happened to my camera. All pics are coming up blank! It looks like johns z's, but the weight is to the outside parallel to the frame rails

That's OK. Is the block on the end of the lever pointing to the front of the car or the firewall? Something I have been wondering about is was the heat riser just installed in any position even at the plant? and was there different ones. 
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GaryC

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« Reply #28 on: November 14, 2013, 07:36:18 PM »

According to my July 1969 issue of the 1967-1969 Camaro Master Parts catalog, the heat riser valve is the same part number for the 1967 thru 1969, 302ci, 327ci, and 350 ci engines and that part number is #3887023.  I have my original 1968 Z28 heat riser valve in my hand and it looks identical to the NOS one shown above.  I would take a picture of mine but being it looks identical, I see no reason for another picture.

BTW.....the 1969 AIM shows in the exact position as John Z's.
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Jerry G.

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69Z28
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« Reply #29 on: November 14, 2013, 07:58:05 PM »

So I wonder then what does the 3746844 go to?
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
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