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| /6 redline and cruising rpm https://slantsix.org/forum/viewtopic.php?t=26050 |
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| Author: | pinkiedog64 [ Fri Nov 30, 2007 12:41 pm ] |
| Post subject: | /6 redline and cruising rpm |
I have a '64 D100 with a 3 on the tree 225 /6. The head has been milled .100", ported & polished, new guides, hardened seats, and the engine has the Super six carb, intake and exhaust. What is the recommended redline rpm for this engine? Also, what's a safe cruising rpm for highway driving (long trips)? Thanks |
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| Author: | Aggressive Ted [ Fri Nov 30, 2007 1:33 pm ] |
| Post subject: | |
Redline and where it gives up are about the same, about 4000 with a one barrel. Nice place for cruise is about 2500 to 2700 rpm, right in the middle of the torque band. |
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| Author: | DusterIdiot [ Fri Nov 30, 2007 5:11 pm ] |
| Post subject: | Depends on gearing and tire size, etc... |
Quote: What is the recommended redline rpm for this engine?
Cruise rpm will depend on carb size, tire size, rear ratio...2500-2700 for a 1 barrel can get as low as 2300 with more carb, gearing, etc... Redline on a 'worked over engine' is about 5-6K... stock bottom end with old bearings should be about 3500-4000 (don't say I warned ya...) -D.Idiot |
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| Author: | walpolla [ Fri Nov 30, 2007 7:55 pm ] |
| Post subject: | |
redline? this is redline unfortunately the poor ole slant has a bad habit of poking # 5 out.  without a good build,if you are looking for max revs,that will probably happen. seen several over the years. keep it under 4k and (hopefully) you should be sweet. regards,Rod 
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| Author: | Dart270 [ Sun Dec 02, 2007 5:15 am ] |
| Post subject: | |
4000 rpm is about where the power starts to really drop off. I have cruised a well rebuilt stock-internals engine at 36-3800 all the way across the country with no ill effects. I would say 5000 is totally safe for stock internals if the engine isn't gummed up inside. I was running my V motor (junkyard shortblock) to 5500 road racing and that was 100% fine. BUT, when I went to 6000 redline it gave up. My '64 Dart motor has a well rebuilt stock-type bottom end with cast pistons and balanced assy and looser bearing clearances and it is good to 6000. Lou |
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