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Cave Man
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« on: April 26, 2011, 03:26:08 pm » |
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44 idfs with 36, 9.3:1, Heads are the CB Ultra Mag CNC 42x37.5, CB unitec rods, stock oil cooler with external oil filter. 122 hp 126 tq. I run 93 Octane gas and an MSD 6 AL ignition.
Will it be better to run a SVDA or the MSD Dizzy for this car to be driven on the street and might see a little time on the strip. Would like to keep it as cool as possible as it is at least 30 to 45 min to town from the house.
It is my understanding that the SVDA will lower the timing as the butterflys close and this will help to give you better milage and lower temps.
Thanks for the help.
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1970 Bug
2110 122hp 126tq (to the ground)
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bowen71
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« Reply #1 on: April 26, 2011, 03:36:54 pm » |
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You would have to tap your 44's for a vacuum port to use the SVDA. I would use the MSD you can modify your curve to your likings.
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2110 44's 42x37.5 L6, 8.2:1, KCR Super Street Plus
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fifty-five
Junior
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Posts: 218
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« Reply #2 on: April 27, 2011, 12:14:15 am » |
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Hey buddy, I dont have experience with msd, but I love my mallory!
Oh yeah, still waitin on that apple crisp....lol
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1955 Ragtop
2276 under the deck turbo
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Bruce Tweddle
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« Reply #3 on: April 27, 2011, 12:45:29 am » |
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It is my understanding that the SVDA will lower the timing as the butterflys close and this will help to give you better milage and lower temps.
It's not quite like that. The vacuum advance will give you more advance at part throttle under light loads. That's what gives you the better mileage. Then when you stomp on it, the vacuum advance goes away and the distributor acts like an 009. I say there's no choice here, use the vacuum distributor. Check your carbs, some IDFs have the vacuum advance tube already. If not, putting one in at the stock location is very simple. |
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Cave Man
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« Reply #4 on: April 27, 2011, 07:22:37 am » |
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My 44's have the port on them so I can hook it up without a problem. Just lookin to make it a little more responsive while around town. Kind of hard to wind it up every time I pull off from a stop light.
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1970 Bug
2110 122hp 126tq (to the ground)
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bowen71
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« Reply #5 on: April 27, 2011, 11:35:16 am » |
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If you have the money buy the CB Performance Magna Spark Digital Dizzy that gives you the best of both worlds.
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2110 44's 42x37.5 L6, 8.2:1, KCR Super Street Plus
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Sleeper 64
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« Reply #6 on: April 27, 2011, 08:46:19 pm » |
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SVDA Proven to do the job.
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It might not be fast but it is paid for.
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wayne harron
Junior
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Posts: 109
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« Reply #7 on: April 27, 2011, 09:41:20 pm » |
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I run a MSD dizzy and could not be happier. You can tune it just about any way you want, how fast the advance comes in or how slow, adjust the advance stop to different degrees, or lock it out. It comes with everything you need, including a really good set of directions and charts to help you get it where you want it. Plus if your running a 6AL box it is a plug and play. It plugs into the box no wiring to figure out.
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PEP Transmissions
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Glenn
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« Reply #8 on: April 27, 2011, 10:16:17 pm » |
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Bosch 010... simple and proven to perform.
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bowen71
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« Reply #9 on: April 27, 2011, 11:27:52 pm » |
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So many people afraid of change, look at what is out there. There are better choices than what came stock 50+ years ago. If you want cheap stick with what you have and deal with whatever it gives you. If you want to control it and make it do what you want it to do and when to do it, spend the money on a good dizzy. Nothing you buy out of a box without adjustment will be perfect for your driving on your engine with your goals in mind. So buy something you can adjust and change. I would get this if I had the money. http://www.cbperformance.com/catalog.asp?ProductID=1855 |
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2110 44's 42x37.5 L6, 8.2:1, KCR Super Street Plus
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wharron
Newbie
Offline
Posts: 4
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« Reply #10 on: April 28, 2011, 12:11:16 am » |
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I totally agree with you bowen71. If you going to spend the money to build a high performance engine why not spend the money on a good,adjustable ignition system.
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Glenn
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« Reply #11 on: April 28, 2011, 06:38:53 am » |
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I totally agree with you bowen71. If you going to spend the money to build a high performance engine why not spend the money on a good,adjustable ignition system.
Then replace the distributor with a crankfire system. |
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