Some basic questions about the C4
Thread Starter
Race Director
Joined: Dec 2000
Posts: 10,896
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From: CO
Some basic questions about the C4
I am looking to buy a C4 and I have a few questions.
1. I have never driven a 4+3 transmission. How does it work? It sounds odd to me. Its a 4 speed with overdrive?
2. I have heard that in the late 80's (88-89) the rear suspension setup was changed. Is this true and what was changed?
:cheers:
1. I have never driven a 4+3 transmission. How does it work? It sounds odd to me. Its a 4 speed with overdrive?
2. I have heard that in the late 80's (88-89) the rear suspension setup was changed. Is this true and what was changed?
:cheers:
Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Re: Some basic questions about the C4 (flood)
The 4+3 trans is a manual transmission. There was a thread on here a few days ago about it where Scorp explained it pretty well, do a search for it.
I don't know what you are talking about with the suspension unless it has to do with the wheels all being standard 17" starting in '88 but '87 had that as an option.
Hope this helps
I don't know what you are talking about with the suspension unless it has to do with the wheels all being standard 17" starting in '88 but '87 had that as an option.
Hope this helps
Waka, Waka, Waka!
Joined: Jun 2002
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From: Richmond Virginia
CI 4-6-8 & 10 Veteran
St. Jude Contributor
Re: Some basic questions about the C4 (flood)
I've always thought the 4+3 sounded cool. I couldn't find one in a good car when I was ready to buy my vette, so I went with an automatic. Looking on the forum over the past few months, I have noticed that the people who have them are, more often than not, complaining. It seems that the rear 'overdrive' component requires a very high level of attention, or it overheats.
Like I said though, I don't have one, but I have been looking at them.
- Fozzy
Like I said though, I don't have one, but I have been looking at them.
- Fozzy
Team Owner
Joined: Apr 2002
Posts: 28,735
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From: Frankenstein never scared me. Marsupials do, because they're fassst…and they DART, THAT'S crazy!
St. Jude Donor '03 thru '25
Re: Some basic questions about the C4 (flood)
The Doug Nash 4 speed is a good transmission. It’s the Overdrive unit that is the weak link in the 4+3. You have to take very good care of it, (change oil & filter regularly like Scorp said). Also don’t drive it like it says in the car’s manual, it was written by GM to get around EPA gas guzzler laws so they tell you to drive with the Overdrive engaged to save gas, but that will kill the Overdrive unit prematurely. The actual manufacturer of the Overdrive unit says to ignore GM and never use the Overdrive unit unless going faster than 50 mph for extended periods. Don’t drive around town with it engaged and always disengage it on startup as not to forget and drive around with it engaged. You will get a small fraction less gas mileage but your Overdrive unit will last a LOT longer. :yesnod:
:cheers:
:cheers:
Thread Starter
Race Director
Joined: Dec 2000
Posts: 10,896
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From: CO
Re: Some basic questions about the C4 (hz900)
I don't know what you are talking about with the suspension unless it has to do with the wheels all being standard 17" starting in '88 but '87 had that as an option.
Team Owner
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From: Sydney, Australia
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St. Jude Donor '07-'08-'09-'10-'11-'12-'13-'14-'15-'16-‘17, '22
Re: Some basic questions about the C4 (flood)
I don't know what you are talking about with the suspension unless it has to do with the wheels all being standard 17" starting in '88 but '87 had that as an option.
Actually I heard that they went to a 5 link setup. Is this true? :confused:
Actually I heard that they went to a 5 link setup. Is this true? :confused:
