Hmmm....I would have thought you'd have made more than that. Did the air suck? Maybe the dyno wasn't calibrated properly.
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08-05-2013
Hmmm....I would have thought you'd have made more than that. Did the air suck? Maybe the dyno wasn't calibrated properly.
08-05-2013
Idk ha
08-05-2013
Ya I wouldn't know either.
08-05-2013
Shouldnt your timing have been a bit higher? That timing number sounds kinda low.
08-05-2013
It could probably be advanced some...but, 18* isn't bad at all for keeping it safe. 19* is about all I'd push it for a daily driven car.
08-05-2013
I was always told 20* is where you start putting the Head Gaskets at risk.. Just thought i had heard of people pushing 18* on pump gas with a similar build...
08-05-2013
I ws at 20 but i turned it down to be safe. Ill get the ic and 2.8 on, bring it to a local dyno and tune it and get some real numbers.
08-05-2013
and bring it back up to 20
08-06-2013
Cammed L67 making less than 300whp= something is wrong.
08-06-2013
FixedOriginally Posted by txslow6
08-14-2013
hmm that makes me sad, Im on a 2.8 now retuned feels a hell of a lot faster now
08-14-2013
Im not a big believer in giant timing tables.... General boost tuning states that the more boost / compression you run the less timing is nessary to reach peak combustion right at top dead center because the fuel and air is squished much closer together. When I had mine on the dyno (Keep in mind this is a l36 block so its high compression) I was running a 3.4 inch pulley on gas at the time and was running 20* of timing with no kr. Just for fun we added timing and saw no gains at all. In fact we pulled timing all the way down to 13* before we saw any power or torque loss. I still run 14* now and notice 0 change when I run any more..... heck iv tuned subarus and the same story there.... running almost 25psi of boost you only need 14 to 15* to make peak power.
08-15-2013
Out of curiosity go you happen yo have any Dyno sheets from these pulls? I would be very interested to see them.
08-16-2013
yeah, they are in the car. Let me go grab them and get them online. Hold on.
08-16-2013
My shift point was set @ 6250 just for reference.
08-16-2013
Were all three of those with the same timing? What was the timing?
08-16-2013
18* I think. I would have to check the tuning laptop to be sure
08-16-2013
I guess what I was really wanting to see was something showing that with lower timing it didnt hurt the HP output...
08-16-2013
Oh he doesn't have sheets for that I don't think. Have to ask frosty
08-17-2013
Never bothered with sheets back when I was playing with that. Was mostly on the dyno to find what afr and timing the car was most happy at so I would know what to tune for. Butt dyno and the 1/4mile dyno both say that I go faster on 14* and a smaller pully (Less timing = I can run more boost) then with 18* and .2 bigger pulley.
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