Quote:
Originally Posted by Cliff R
Can't say as I've ever had a flat hydraulic cammed engine of my own that didn't have a "ticker" in the bunch someplace. I just have bad luck with that sort of thing for some reason.
Dating clear back to the very first 400 I had in the Ventura in the mid-1980's the new Crower 60240 cam and Crower lifters had one "ticker" that just refused to cooperate. I ran the engine for several years, adjusting it numerous times along the way and no matter where I set the pre-load it would just make noise when it felt like it. Sometimes it would clatter on a cold start, other times it didn't. Pretty consistently it made noise fully warmed up below apprx 1500rpm's, but I just lived with it and that engine powered the car for quite a few years and never gave any issues otherwise.
I did discover that running light pre-load as often recommended for setting up hydraulic cam set-ups didn't work well. Going to zero and an additional 1/2 turn or so didn't make the grade, ALL of the lifters were a tad noisy there. I ended up running them down one full turn, and aside from one stubborn lifter the others were dead quiet for the life of that engine.
For this and a few other reasons I decided to use Crower HIPPO solid roller lifters in my current build, and it's by far and above the quietest engine I've ever had sit between the fenders of any vehicle I've owned. With the last set at .005" cold it's dead quiet even fully warmed up, and despite folks kicking that set-up in the nuts (most have never tried it) it's been flawless now since around 2009, unless you count the failed set of full roller rocker arms I had to replace.
As a side note the Edelbrock 2157 cam is mentioned in this thread. Sam whatever you do stay as far away from that cam in your high compression 455 as possible. Cripe it requires two cans of 108 octane boost in a tank of 93 octane to even think about working in a smaller 400 build.....the big 455 will absolutely hate it and you'll have 8 pistons in the oil pan instead of one before you've got 200 miles on it......IMHO.......Cliff
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He has the bigger cc heads than mine so it's comparable.
I error on the safe side by adding a lot of booster. Why not? It's cheap compared with my time and trouble fixing parts that suffer from detonation.
You can build a carb like a genius, have one of yours on my 69, but you can't make lifters not tick? Life is strange. I can build an engine without and funny ticks but I can't build a carb like you can. I think it's all about determination and my engines are not going to tick or I'm on it 24 7 until they sound right. Right now everything is right in my world, no funny sounds in any of my vehicles, priceless....