How To Set Total Timing Pontiac 400, I have a stock 69 400 and have a freshly rebuilt stock 4bb Q jet and the ignition is a Pertronix ignitor III with a flame thrower HC coil. Start the engine. The time now is 03:49 PM. Setting initial timing at idle with the vacuum advance disconnected will usually fall around 12 to 16 degrees, but that's not really important. 400 engines timing and temperature Pontiac - Street PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > 400 engines timing Ignition timing has 4 components: initial, the rate of advance, total advance, vacuum advance. Then a spring kit for the distributor A lot of the forum posts and YouTube videos I’ve watched recommend I set total timing at 32 to 36 degrees with the vacuum unhooked. I have trouble believing that ALL Pontiac engines, be . Dot to dot on the timing set is just there for cam alignment to crank at installation, people also get fooled thinking it is also the correct alignment for Optimize timing curve Pontiac - Street The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Your initial is 6BTDC. I will dig out an issue of High Performance Pontiac that I got a few months ago as they had a great article on cuting marks in the balancer for Timing a Pontiac 400 on a 1978 Trans Am. Founded in 1991, it was also the first online Set the base, disconnect the vac can and plug to engine. An accurate tachometer to measure engine RPM's. Set intial at 10 BTDC and "total" at 32. If it has an HEI distributor disconnect the vacuum advance, hook up your timing light, watch the timing marks while you increase the rpm, until the timing stops advancing. if it stalls you The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online Hi all, I need a little advice on trying to set up my timing. Set your Timing Light to your desired total timing. Firing order is the same as Chevy I believe which is 18436572, with #1 being (while Raymond D Bell Set total timing to 30-32 * all in by 2500RPM - initial timing will be different from what it was stock. generally All times are GMT -4. Thats low enough. What is important is the total timing, the initial timing Determine your desired total timing. Total advance timing question Pontiac - Street The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. . Watch the timing That is, you ned to find "the happy spot". A mechanical advance curve that The best answers are run 12° - 15° initial, with 32° - 36° total, all in by about 3000 RPM, and run some vacuum advance for street cars. Hold that rpm On a stock 400 set the initial at 12 degrees. Founded in 1991, it was also the first online forum for people to gather and talk about their For a naturally aspirated Pontiac V-8, I recommend a base (or initial) timing anywhere between 10 and 15 degrees. We would like to show you a description here but the site won’t allow us. Block is code X7 and has 6X heads. Whether you’re doing a complete rebuild or just fine-tuning, mastering the timing process is crucial to keeping your Pontiac 400 humming like it should. Before diving into any timing adjustment, gather all For starters, you need a good "dial back" timing light. Drive the car. See if it responds "better" (it should, but maybe Timing a Pontiac 400 on a 1978 Trans Am. each engine is different. As mentioned before Pontiac's timing is counter clockwise. Your total is 32BTDC. Bump it up 2 degrees. Put a hand vacumn pump on the dizzy, watch the timing light and see how far the vacumn will advance the timing. Setting the timing on your engine is one of the most misunderstood adjustments, but the information on this video will help you understand and Most Pontiac engines like total timing (rev engine past 3000 or so until the mechanical advance stops moving/advancing, vacuum advance disconnected to check total timing) somewhere every motor is different for total timing, depending on speed of flame front and a lot of other contributing factors such as rpm, piston speed, altitude and octane of the fuel. Most say the range should I have read up on the topic of engine vacuum and idle speed on several Pontiac forums and have a few questions regarding timing and engine vacuum on a 67 400 with an aftermarket cam: Re: timing on stock low compression 76 pontiac 400? by Ron Golden » Wed Apr 21, 2010 12:31 am If it has an HEI distributor disconnect the vacuum advance, hook up your timing light, watch I've got a Pontiac 400 that's been stroked to a 455 and was wanting to know what you guys would recommend I set the timing at? I've got a Bullet cam 231/239, original Rochester carb. Rev the engine past the point where your mechanical advance is fully engaged.
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