67 Mod

MetalHead · 02-19-2002, 04:26 AM

Ok, can anyone tell me what is the best suited transmission I can get for my car? I have a 67 coupe that I have been modifying for a couple of years now. It started out as a stock 289 2bbl, with a 3 spd manual tranny. Since then I have put a 4bbl 600 edelbrock carb, with an edelbrock airgap intake, as well as dual exhaust with flowmasters on it, as well as an MSD ignition system. I am told that my transmission is going to die in a few months and I need a new one, which is fine because it sucks anyway. I am mainly interested in street racing, but it also need to be my daily driver. After the new transmission I have a new beefier edelbrock cam waiting to go in, so I would also like to know what else I should put on the list to do to it. I was thinking that a new rear axle would be in order, but I'm not sure what kind, or where to go. I can use all the suggestions I can get about what to buy and where to get it so any information from anyone would be greatly appreciated. Thank you!

thunderbolt · 02-19-2002, 12:53 PM

How much horsepower do you plan on in the future? What kind of highway drivability do you want?
If you want high HP, are OK with moderately high rpm's and want it fairly cheap, I would go with a ford 4speed top loader and around 3.5 to 4.1 rear gears with a 9 in. (It's gonna turn around 3000-3500 on the highway)
If you want better drivability, I would look at a T5 conversion with a WC (World Class) T5. It probably isn't as tough as the top loader, but these trannys survive pretty well behind warmed up 5.0's. I would still think 9in if you want more than 300hp. With the T5 I would deffinately go with 3.9-4.1 gears. (.63 overdrive) If you really want to, think of a tremec instead of a T5. I think this can be done about as easily, but will be more expensive.
Otherwise, I would look to a 4 speed toploader or t10 and keep the rest of it stock, but anyway you go, make a plan for the future or you will probably sacrafice tomorrow for today.

MetalHead · 02-19-2002, 03:27 PM

I am not sure how much horsepower I have right now because I have never had the chance to dyno it, but I think that around 300 hp would be enough for me. With the transmission, the thing I am looking for the most is reliability and dependability, since this car will be my only car for at least the next 5 years, so I don't want to sacrifice tomorrow for today at all, although I would like to get the most performance possible out of my next transmission without giving up its dependability. It sounds like the toploader is the way I should go. Do you have any estimated prices on these transmissions, or at least how they measure up to each other?

With the rear end, I will have to learn better about what you are talking about, since I am not really familiar with the specs of differentials in regards to gears and everything.

02-19-2002, 04:26 AM	#1
MetalHead Registered Member Join Date: Feb 2002 Location: Monterey, CA Posts: 76	67 Mod Ok, can anyone tell me what is the best suited transmission I can get for my car? I have a 67 coupe that I have been modifying for a couple of years now. It started out as a stock 289 2bbl, with a 3 spd manual tranny. Since then I have put a 4bbl 600 edelbrock carb, with an edelbrock airgap intake, as well as dual exhaust with flowmasters on it, as well as an MSD ignition system. I am told that my transmission is going to die in a few months and I need a new one, which is fine because it sucks anyway. I am mainly interested in street racing, but it also need to be my daily driver. After the new transmission I have a new beefier edelbrock cam waiting to go in, so I would also like to know what else I should put on the list to do to it. I was thinking that a new rear axle would be in order, but I'm not sure what kind, or where to go. I can use all the suggestions I can get about what to buy and where to get it so any information from anyone would be greatly appreciated. Thank you!

02-19-2002, 12:53 PM	#2
thunderbolt Registered Member Join Date: Oct 1998 Location: Houston, TX, USA Posts: 380	How much horsepower do you plan on in the future? What kind of highway drivability do you want? If you want high HP, are OK with moderately high rpm's and want it fairly cheap, I would go with a ford 4speed top loader and around 3.5 to 4.1 rear gears with a 9 in. (It's gonna turn around 3000-3500 on the highway) If you want better drivability, I would look at a T5 conversion with a WC (World Class) T5. It probably isn't as tough as the top loader, but these trannys survive pretty well behind warmed up 5.0's. I would still think 9in if you want more than 300hp. With the T5 I would deffinately go with 3.9-4.1 gears. (.63 overdrive) If you really want to, think of a tremec instead of a T5. I think this can be done about as easily, but will be more expensive. Otherwise, I would look to a 4 speed toploader or t10 and keep the rest of it stock, but anyway you go, make a plan for the future or you will probably sacrafice tomorrow for today.

02-19-2002, 03:27 PM	#3
MetalHead Registered Member Join Date: Feb 2002 Location: Monterey, CA Posts: 76	I am not sure how much horsepower I have right now because I have never had the chance to dyno it, but I think that around 300 hp would be enough for me. With the transmission, the thing I am looking for the most is reliability and dependability, since this car will be my only car for at least the next 5 years, so I don't want to sacrifice tomorrow for today at all, although I would like to get the most performance possible out of my next transmission without giving up its dependability. It sounds like the toploader is the way I should go. Do you have any estimated prices on these transmissions, or at least how they measure up to each other? With the rear end, I will have to learn better about what you are talking about, since I am not really familiar with the specs of differentials in regards to gears and everything.