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Discussion Starter · #1 ·
hey guys, is it possible to have a 27 degree btdc timing mark :confused: ! sbc 350, and i was trying to get the timing to it's highest point only to find out that i had been running this engine way under it's mark. now it runs better than it has ever ran and saving a few more mpg's. quicker response and harder shifting, but, the melling MTC-1 cam is timed at 27 degrees btdc! is this right ???? should a cam be degreed this retard/advance ??? i have been wrong once and don't want to be wrong again!!
thanks for any info
 

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Discussion Starter · #3 ·
thanks double vision,
but how ever i'm more confused now. ok, maybe it's the spark timing that i need to be concernd about, being that it now runs better after i moved it. i may not know what the hell i'm talking about but this what i remember of what has happened so far. i had it set to TDC on the compression stroke wich read 0 degrees on the timing tab that i have on there. in order for it to crank and run i had to initialy get the timing light(standard light) move it back to 18 degrees BTDC. (this would be refering to the timing spark right) well, this is where i had left it and it has ran ok, but i felt like i was being restricted of power or something so i went back in and discoverd that at 24 degrees it runs alil better! and followed it back to 27 degrees! it cranks on a pin head, responds better at accelleration and seems to not want to drink as much gas.so my ? is, could this be a true setting ?? my cam specs are;

MTC-1 MELLING PERFORMANCE
SAE TIMING= 27 btc, 71 abc, 76 bbc, 32 atc

SAE DURATION= 278 int, 288 exh

i'm not very good with the numbers and abreviations, but seeing that it shows up in the chart makes me want ask someone who does knows. even at the exspence of my own ignorance!:(
thanks again!:)
 

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Discussion Starter · #6 ·
yes it does have vacum advance and i didn't think about to check for the advance weights sticking. i'll do this and also look for the timing mark at a 3 grand rev.
thanks for the info!
 
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