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Old 12-02-2012, 08:04 AM
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Fired up the motor

I broke in the cam and went for a test drive. 350 .030 over, kb hyper 12cc dish, lunati bmII, rpm airgap intake, edelbrock 650, dart iron eagle 64cc with 200cc runners, headland long tube and types exhaust


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Old 12-02-2012, 08:31 AM
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sorry

There was supposed to be a question that post. What would you recommend timing be set to? I have it at 12 without vacuum, as soon as I hook up vacuum it comes up quite a bit.

Thank you

Gump
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Old 12-02-2012, 02:59 PM
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Fired up the motor

You need a timing light with advance. Have someone hold the rpms at 3000-3500. Set the total timing at 36* without vacuum. Tighten the distributor hold down and make sure you still at 36* total. You can then check what you have at idle. Reconnect the vacuum advance to the right side port and see what you have at idle. If you have more then 52* you will need an adjustable vacuum advance can. Check out this Wiki article. http://www.crankshaftcoalition.com/w...EI_distributor
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Old 12-02-2012, 03:15 PM
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Do you have hei with the recurve kit already installed. It comes with springs to change when the mech kicks in and a lock out plate to stop it from adding so much timing. Then an adjustable vacum can with a little lockput plate so you can stop it from adding 20+ degrees of timing. Then you can add a little more initial to make it rev a little harder. But really depends on compression and what type of cam the engine has and where it likes to run. Some engines just like more or less timing. Best to test and tune. I use a g tech and ear along with cheapo timing light to tune. But been doing it a while.

Hope that helps.
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Old 12-02-2012, 03:38 PM
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For setting timing I take a different approach! Take 3 engines all built Identical and all three will run at optimum performance at different timings! I set the initial at a timing that the engine runs good at cruising anywhere from 6 to 14 for the street on an out of the box dist.,if it turns over hard back it off a little! then I set total about 30 Then I set weights and vacuum advance a little at a time until it is what I desire at the rpm that the engine performs the best at, It could range from 28 total to 38 on a street engine! I only lock em out for racing! and when running on the street with a cam with good vacuum I like a vacuum advance on a cam with low vacuum I go with centrifugal advance only! The Track or a dino is the best places to do this never on the street LOL

CDs approach is good ! But we don't know any cam specs or C.R. or the driving situations you prefer to pinpoint any real world recommendation.

H.compton is closer to my aproach.

Jester
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Old 12-02-2012, 04:03 PM
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do you use that truck to tow the 67?
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Old 12-02-2012, 06:00 PM
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Originally Posted by vinniekq2 View Post
do you use that truck to tow the 67?
LOL, that would be cool pulling into a show!!

Jester
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