Quote:
Originally Posted by ArStrm345LE
2007.08.22 UPDATE: I just got off the phone with the Mechanic and he said they had just re-timed the engine to 4 degrees before TDC. I respectfully mentioned to him that it was my understanding that the proper timing for this motor/moho was 8deg before TDC. He said they knew what they were doing as they have the proper documentation and they are an RV/auto repair shop. Are they correct? Can anyone possibly give me an intelligent response if the timing is indeed 8 before using the timing marks on the bottom of the engine using the 8th cylinder?
P.S. I couldn't seem to find the edit button for my above post to append this one. I apologise in advance for the double posting.
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They are indeed correct. The proper timing for a 454 RV motor is 4*BTDC. If you were running a high performance 454 with 10.5:1 compression, you would set your timing at around 10*BTDC. If you find that your motorhome is sluggish, you might want to ask the mechanic to take a look at the timing chain. If the chain isn't as tight as it should be, consider a double roller timing chain. As for the motor running at bit warm (my L-82 350 Vette ran at 210 stock, and that was normal), have the mechanic take a look at the fan clutch. Fan clutches that work make a world of difference. I would also make sure that I had a 4 core radiator. Hope that helps.
Frederic