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Post by tuggy24g on Apr 3, 2010 10:25:20 GMT -5
Hello guys I read some of you guys go down to OC for a show/meet up. Well looks like some of you guys have built motors and from the video on the front page also drive your Chevelle/El Camino down to the show. I was wondering what tranny you guys run? Well my main question was how do you guys drive if you do not have overdrive. Your cars must scream high RPMS on the highway.
Me I have an 86 with a 402 big block. I have a built th350 and I am scared to drive on the highway because of the RPM. So if you can help me out I like that. Also I do not have the money yet for a 200/700 yet
Thanks for your time and work on the club
Brad
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Post by Dave on Apr 4, 2010 9:13:27 GMT -5
Brad,the few guys with gears trailer down . one of the hot set ups is this www.gearvendors.com/ I have a good all round gear in my car (373) big blocks dont need a steep gear. i just would go at my own pace and let them pass  |
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Post by chad on Apr 4, 2010 17:55:57 GMT -5
Brad, I have a small block with 700r4 trans and 3:73 in my wagon. It does okay on the highway 16mpg. I have the lockup converter hooked up. I wouldn't hesitate to drive it to OC but If i was going to do a lot of highway cruising I'd want a higher gear ratio maybe a 3:55. I went with a 5speed TKO trans 4:10 rear in my 69. But I don't have any real world experience with this yet.  So I can't tell you how this will workout for me |
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Post by 67chevelle on Apr 4, 2010 20:05:29 GMT -5
I have a big block with a m21 and 373 gears I just went to 373 s I was running 342 s and they were fine I drove to Md and back no problem . I am driving the car to Ocean City will see how that goes. I plan on going to Harrington,Bloomsburg, and Poconos GoodGuys show and drive to all 3.
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Post by Brad on Apr 6, 2010 10:08:13 GMT -5
Well The only real highway miles I will put on is when I drive from Bucks County to Carlisle pa show and back. The problem I am thinking of is that when I am driving I will be in the 3000RPM range with my 402 big block. I do not want to hurt it since I will be driving so far. So what do you guys think?
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Post by bracketchev1221 on Apr 16, 2010 7:26:04 GMT -5
3000 rpm is not a problem for the parts. The engine is actually under less load at those rpms. Torque force on the crank is a function of power and rpm. More rpm puts less stress on the crank. I had a 406 small block that was a daily driver with 3.73's and 26" tall tires. Went everywhere at 3000 rpm.
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BlueSS454
Junior Member
General Lee
Posts: 58
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Post by BlueSS454 on Apr 20, 2010 22:58:02 GMT -5
Why are you scared to drive it on a highway?
Too many people have the misconception that 3000+ RPM's sustained on the highway is bad for an engine when in reality, it really isn't. You're just used to driving a modern car with OD that runs 2000 RPM's at 75 MPH with quiet exhaust. My 70 has a pretty stout 454 with a TH400 and 3.73 gears out back and has logged a lot of miles up and down I-95 between New Jersey and Maryland, never an issue. I've also driven it from central Massachusetts back home to South Jersey with 4.10 gears in it at the time doing 70-80 MPH the whole way home turning 3600-3800 RPM's. I've logged 21,000 miles on my 70, never an issue.
Same thing with my 69 Charger, has a 727 auto in it and 3.23 gears in it. I've logged over 3300 miles on it with quite a few trips down I-95 and down to OC, MD with it. No big deal. This is what these cars did new, it's what they do now.
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Post by Brad on May 20, 2010 11:14:32 GMT -5
Why are you scared to drive it on a highway? Too many people have the misconception that 3000+ RPM's sustained on the highway is bad for an engine when in reality, it really isn't. You're just used to driving a modern car with OD that runs 2000 RPM's at 75 MPH with quiet exhaust. My 70 has a pretty stout 454 with a TH400 and 3.73 gears out back and has logged a lot of miles up and down I-95 between New Jersey and Maryland, never an issue. I've also driven it from central Massachusetts back home to South Jersey with 4.10 gears in it at the time doing 70-80 MPH the whole way home turning 3600-3800 RPM's. I've logged 21,000 miles on my 70, never an issue. Same thing with my 69 Charger, has a 727 auto in it and 3.23 gears in it. I've logged over 3300 miles on it with quite a few trips down I-95 and down to OC, MD with it. No big deal. This is what these cars did new, it's what they do now. Thanks that makes me feel a whole lot better! |
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So I can't tell you how this will workout for me
