Issue with a 1968 Z28 w/ 2x4 bbl carb setup
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Issue with a 1968 Z28 w/ 2x4 bbl carb setup
I am trying to obtain more information on this car. I have a 68 Camaro Z28 with a correct 302 block and a 2x4 barrel carb setup. Does anyone have any information?
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From: Teeter-tottering between Brilliance and Insanity
Re: Issue with a 1968 Z28 w/ 2x4 bbl carb setup
Originally posted by mmautobrokers
I am trying to obtain more information on this car. I have a 68 Camaro Z28 with a correct 302 block and a 2x4 barrel carb setup. Does anyone have any information?
I am trying to obtain more information on this car. I have a 68 Camaro Z28 with a correct 302 block and a 2x4 barrel carb setup. Does anyone have any information?
Theres some info for you 
What exactly do yo uwant to know. The 2x4 barrel was an option, but I cant recall for the life of me what ithe intake is called
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Joined: Sep 2000
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From: Lost Wages, NV
its called the "CrossRam" intake...
If I remember correctly, it would have been delivered in the trunk with the car, and dealer installed...
I know headers were done this way, but not sure on the intakes though....
I always thought the CrossRam intake was a '69 only option ??
If I remember correctly, it would have been delivered in the trunk with the car, and dealer installed...
I know headers were done this way, but not sure on the intakes though....
I always thought the CrossRam intake was a '69 only option ??
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Joined: Apr 2000
Posts: 793
From: Ewing, NJ
The crossram was never an option with the Camaro. It was a heavy duty service part that could be purchased at the parts counter. Headers were an option in 67-68, but not 69. So headers would be put in the trunk by the dealer since it was a GM option, the crossram was not put in the trunk. Check out www.camaro-untoldsecrets.com for more information on the crossram setup.
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Joined: Sep 2002
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From: Oakland, California
Jeff is correct again of course! 
The cross ram was developed to give the Z28 an advantage in TransAm racing. It was first available for the 1968's but more common on 1969's. (TransAm changed the rules in 1968 allowing "not more than" two 4bbl carbs.) However it was never a dealer installed option.
Want more information?
http://www.camaro-untoldsecrets.com/...s/crossram.htm
The cross ram was developed to give the Z28 an advantage in TransAm racing. It was first available for the 1968's but more common on 1969's. (TransAm changed the rules in 1968 allowing "not more than" two 4bbl carbs.) However it was never a dealer installed option.Want more information?
http://www.camaro-untoldsecrets.com/...s/crossram.htm
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Thanks
I just wanted to say thank you for all the positive responses and the sites you had referred. I am actually selling the car for 35k. If anyone is interested please feel free to contact me at MMAutoBrokers@Yahoo.com Thanks once again.
Shawn
Shawn
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Joined: Jul 2002
Posts: 3,768
From: Friendswood, TX, USA
Originally posted by jg95z28
Jeff is correct again of course! The cross ram was developed to give the Z28 an advantage in TransAm racing. It was first available for the 1968's but more common on 1969's. (TransAm changed the rules in 1968 allowing "not more than" two 4bbl carbs.) However it was never a dealer installed option.
Want more information?
http://www.camaro-untoldsecrets.com/...s/crossram.htm
Jeff is correct again of course!
The cross ram was developed to give the Z28 an advantage in TransAm racing. It was first available for the 1968's but more common on 1969's. (TransAm changed the rules in 1968 allowing "not more than" two 4bbl carbs.) However it was never a dealer installed option.Want more information?
http://www.camaro-untoldsecrets.com/...s/crossram.htm
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Joined: Sep 2002
Posts: 9,705
From: Oakland, California
Originally posted by Z28SORR
I think you need to define "Dealer Install Option" as during this time period most dealers would install anything you wanted, including aftermarket parts.
I think you need to define "Dealer Install Option" as during this time period most dealers would install anything you wanted, including aftermarket parts.
Since GM had banned multiple carburetion from most of its production cars, a 2x4 manifold would have to be developed with the intent that it was to be sold as a service replacement part. This was a valid procedure as far as the SCCA racing sanctioning body was concerned, as long as the parts were technically available to everyone that was racing, and not just the factory racing teams. The intent was to keep the racing as close and interesting as possible and to allow the independent entries to be competitive with the factory teams.
It should be understood then that no Z-28 was ever factory-built with a cross-ram intake manifold. Not only was there no need (the racing teams were officially able to use the part without having it on the production car), but GM edict said "this shall not be done" - period. The proof that this was not a production item is in the assigned engine stampings for the 302. Flint Engine and the vehicle assembly plants would need a separate code to identify a motor assembly with any unique components. There are no obscure engine codes in the Chevrolet records to indicate that anything but a single-4-barrel-equipped 302 was ever assembled by the factory. It is possible that a dealer may have converted a car prior to delivery, but most of these manifolds were owner-installed.
It should be understood then that no Z-28 was ever factory-built with a cross-ram intake manifold. Not only was there no need (the racing teams were officially able to use the part without having it on the production car), but GM edict said "this shall not be done" - period. The proof that this was not a production item is in the assigned engine stampings for the 302. Flint Engine and the vehicle assembly plants would need a separate code to identify a motor assembly with any unique components. There are no obscure engine codes in the Chevrolet records to indicate that anything but a single-4-barrel-equipped 302 was ever assembled by the factory. It is possible that a dealer may have converted a car prior to delivery, but most of these manifolds were owner-installed.
More than likely the Z-28 in question has an Offenhuaser Cross-ram which is intentical to the GM original in design and function. I'm beginning to believe this entire thread was started for the sole purpose to advertise the sale of the car.
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lol
Well no I was actually trying to obtain more data on the car. I was really unfamiliar with the Crossram setup and I know it does play a part in its value but the question is how much and that is something I am still not certain of. The car I have has the correct 302 block and everything else according to the trim tag matches aside from the Interior but again, the Crossram just posed an issue as to the over all value and still continues to. We are very interested in moving the car ofcourse but not by means of this forum. If someone is interested then so be it but that was not the initial intention. I am sorry if it was perceived that way.
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Joined: Apr 2000
Posts: 793
From: Ewing, NJ
It never hurts to ask questions. But, that is the Offenhauser crossram that is on the 68 Z28 you have for sale. I looked at the pictures on your website. It is very similar in appearance to the GM crossram, but the Offenhauser has different mechanical linkage for the carbs. The Offy crossram might add about $500-$1000 to the value of the car, an original GM crossram will add $12-15,000 to the value of a Z28.
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Joined: Sep 2002
Posts: 9,705
From: Oakland, California
If anyone is looking for a "more correct" reproduction, these guys can help.
http://taperfresto.com/index.html
http://taperfresto.com/index.html
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