Bob fixed his and LD replaced it with a T5. Tman , Apr 13, Joined: Jan 6, Posts: 1, Profile Page. I have a in my '33 with about HP. Works great and I like it on the "road" I have a 3. If I did it again, I'd use the TCI valve body that eliminates the throttle pressure problems you can have.
Mine has correct geometry on the carb linkage and is properly adjusted so it hasn't been an issue. BUT, it would be much easier just to have the new style valve body. One thing for sure, you need plenty of fluid cooler. I use the one in the radiator plus another external, even in a fairly light car. They DON'T like heat. Joined: Apr 2, Posts: 16, Profile Page. Joined: Sep 14, Posts: 1, Profile Page. V-6 S's used versions of the R4 depending on which V-6 was used.
Not into 3rd Gen and up F-Bodies but I believe they used the R4 as well as I have never seen a R with the torque arm mount on the tailhousing. A good friend has a transmission shop and they build a fair number of both for rods and street machines.
They both have their weak spots and it costs about the same to make either one hold up. The R has the multi pattern bellhousing, will fit in the same space as a TH and uses the same yoke and driveshaft as a short shaft TH, later PG or GM 4 speed.
My friend has one R out in an Olds Vista Cruiser with a running 12's. For a heavy truck used for towing or a high torque BB in a heavy car I'd go with the R4 otherwise my choice is the R but either way I'd have them built by someone I know and trust. I have a R core at my friend's shop right now. Rudebaker , Apr 13, Joined: Mar 18, Posts: 4, Profile Page.
I've never had the but I replaced the T in my cpe with a R 43, mi ago and no problems. As a consequence, the R is a better replacement to the TH in comparison to the R4.
Which is the better option between the R vs the R4 transmission can be determined by a number of factors and these are:. The first obvious reason is the purpose the car will be put to. Is it for drag racing or street ride? There are, however, two limitations to the R in this aspect. It is also expensive to find one that has been well-built.
Consideration is also to be given to which is more common in order to ensure that you can easily find aftermarket support in case you run into issues with the transmission.
That being so, the R4 would be a better pick since it meets the criteria above. This results in a larger RPM drop in the gears in comparison to the R. There is also the longer nature of the R4 which requires certain modifications in order to cross member and driveshaft. Conversely, the R can be made to be stronger than the R4. The R vs the R4 transmission comparisons show their strengths and weaknesses as well as their similarities and differences.
Despite this, they are still a great choice of transmission if one is looking to increase the MPG Miles Per Gallon and reduce the RPM as the vehicle moves down the highway. Your choice of which should be determined by the use you want to put it to. GearStar Performance Transmission N. Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
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The TV cable is tricky to get right. Thee are companies that sell TV brackets to mount to an intake but not sure if one is available for Pontiac would be interested to hear from some one on this.
I made the one for my buddy's car. It holds both the TV cable and the throttle bracket but I have a Mig. You'll need a kit to convert the trans to a non-computer controlled unit. I recommend a company called T. Tech The trans yoke from a TH will fit directly into a r4 not sure about the r If your car originally came with a TH or you have a rear end from a car that did, it has a large yoke make sure you have the correct trans yoke.
Over all, it's not that expensive to do and the way these big cube motors suck the gas, your pay-back is pretty quick if you drive a lot. I'm planning on installing one behind my when it starts to go back together. I've install a r4 in my buddy's 68 Camaro and it works great hp and 24 mpg highway on a 3.
Good Luck. A: The turbo is not a particularly strong tranny, the turbo is, if you get a post '86 version. The is longer, so you will have to do driveshaft and crossmember mods to get it to fit, and possibly the floor pan. Get the yoke with the tranny. A: I have a '69 Ragtop with the same package and I'm runing a 3. Why would you want to convert to a R? My car has enough torque to smoke the tires from here to kingdom come and it runs great on the hiway Though I did add a Holeshot torque converter to it.
I would'nt mess with a good thing. That's my 2 cents worth. But I would never imagine one holding up on your engine Very interesting to read for sure. I never had any big issues with mine but now I'll be nervous Build what you have for your needs, close ratio R or the wide ratio R4. My first SS! If Doc Frohmader is such an expert, why does he call the R a R4? I wonder why all the Turbo Buicks came with R?
Originally Posted By: onovakind It seems like they were out to bad mouth the r from the get go. Matter of opinion i guess. Art Carr also seems to love the r, prefers that tranny to anything else, just my. I quess thats why all these tranny builders are calling begging for my r cores out of the SS Most tell me they wouldnt waste the effort on a r4 Mike. All Data, which is made from the factory manuals still has it listed both ways too.
GM managed to get both transmissions to work and last ok. If had to do it all over again i would have put the R4 in my car instead of the R4. And i really haven't had any luck with the but i already had one so that is what i used.
I know that my opinion on this gets guys going but I agree with the guy. The CAN be made to handle some nice HP but the internals on a are, in my opinion, a better starting point for a street car with some decent HP numbers. If the argument is race trans - then I wouldnt get either one. The grand national is somewhat misleading and like he said - the only car over HP that came with a
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