WebNov 17, 2024 · 7,034 Posts. #2 · Sep 30, 2024. I had that cam in a 454 with 10 to 1 compression. It liked 36 degress total all in, 18 initial with the vacuum disconnected, and a 10-degree vacuum advance. Drop your timing all in timing by 2 degrees and see where your initial lands. If you're in the ballpark, your initial will land at 18 degrees or slightly under. WebNov 17, 2024 · Luckily, finding Top Dead Center (TDC) in an engine is far less taxing from a theoretical standpoint. TDC refers to the position of the Number One piston relative to the deck surface of the cylinder block. This is used as an indicator for at least two of the more critical aspects in an engine: ignition and cam timing.
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WebMar 16, 2024 · Joined Jun 15, 2011. 1,916 Posts. #15 · Mar 15, 2024. I just tuned my 454 yesterday. Its a 1978 454 truck engine 8.5:1 compression, 2.. I use 87 octane. I have my … WebBring the engine back to an idle and check the reading on the light. If the total timing is less than 32 degrees, rotate the distributor counter-clockwise to advance and check again. … tpwd boating matrix
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WebNew Double Row Timing Set Chevy 454 396 427 Big Block bbc bb Chain & Gears. $49.13. Free shipping. Cloyes 9-1110 Street True Roller Timing Set - Big Block Chevy IV/V. $44.99 + $10.95 shipping. New True Roller Timing Set Chevy bb 396 427 454 Big Block bbc Chain Gears. $69.77. Free shipping. WebSep 3, 2012 · Set your total somewhere between 34 and 38 degs and go see if it pings at WOT, use a 1:1 or overdrive gear. Do this during the hot part of the day with the engine up to operating temp. Now let's say you found 36 degs total works best, from here you either live with the initial as it is or you modify the mechanical to get the combination you want. WebMay 1, 2009 · If the engine is at TDC on the compression stroke, exactly where is the rotor to be pointing ( and no, right at the #1 cyl does not change the 20+ degree timing problem) Could it be a problem somewhere else?? please help before i have a breakdown and burn this truck to the ground. ( btw, the engine from the crank up is ALL brand new. starts fine … thermostat maytag for magic chef oven