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| Engine Tuning Advice https://www.slantsix.org/forum/viewtopic.php?t=19785 |
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| Author: | TheOC1914 [ Wed Sep 20, 2006 9:20 am ] |
| Post subject: | Engine Tuning Advice |
Hello everyone, I have a mildly modified slant and I am looking for some tuning advice. My car runs OK, but I think it can run much better. It seems to accelerate well on the highway, but seems sluggish from a standstill. My car turned better times at the drag strip when I had the Super Six setip installed. My setup (car = 1965 Valiant 200, 170 C.I slant): Mopar Performance camshaft (244 duration, 436 lift) Clifford 4-BBL intake Holley 4160 390 CFM carb (stock settings) Clifford 2-piece shorty headers 2 1/4 exhaust all the way back Stock cylinder head Stock rear-end (2:76 I believe) Should I change jetting/power valve/?? on carb? Should I the adjust timing? Any advice is greatly appreciated! |
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| Author: | argentina-slantsixer [ Wed Sep 20, 2006 10:15 am ] |
| Post subject: | |
I'd look at two "fronts": for that carb is too low geared or for that gearing is too much carburetion. |
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| Author: | TheOC1914 [ Wed Sep 20, 2006 10:28 am ] |
| Post subject: | Engine Tuning Advice |
What rear end ratio would suit my needs? 3:23? 3:55? |
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| Author: | 70valiant [ Wed Sep 20, 2006 11:34 am ] |
| Post subject: | |
With a stock head on a 170 and a basically stock cam you are way over carbureted. It simply can not handle all those CFM's. With that carb you would not want your seconaries to ever open. |
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| Author: | TheOC1914 [ Thu Sep 21, 2006 4:44 am ] |
| Post subject: | Engine Tuning Advice |
I agree that new gears would help me out from a standstill....thats pretty obvious. I have read that jetting the carb with #49 and #52 jets is the best general purpose setting with the setup that I have. The car does run pretty rich with the settings I currently have. Should some head work be done to increase air flow? |
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| Author: | Jeb [ Thu Sep 21, 2006 5:52 am ] |
| Post subject: | |
No, you need to get a 2-barrel. You are seriously overcarbed for that mild of a buildup. I think a Super six would work well for your application. |
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| Author: | TheOC1914 [ Thu Sep 21, 2006 6:16 am ] |
| Post subject: | Engine Tuning Advice |
Alright guys.......thanks for the advice.....I still have the 2-BBL setup luckily. I appreciate the help! |
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