where do you shift?
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From: milwaukee wi
where do you shift?
I have an 86 4+3.. i just had a tune done... and apparently my car has no rev limiter? so i guess my question is where do most of you shift when getting on it.. the Tuned port definately seems to fall off in the high rpms..
im not a fan of not haing a rev lmiter... what if you mis-shift.... yeesh. i might ask my tuner if they can add via tune.
so i guess my question is how high do you normally take your engine when getting on it? and how high is "safe" with a stock tuned port?
im not a fan of not haing a rev lmiter... what if you mis-shift.... yeesh. i might ask my tuner if they can add via tune.
so i guess my question is how high do you normally take your engine when getting on it? and how high is "safe" with a stock tuned port?
Le Mans Master
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From: South-central Missouri
Depends on the peak (rpm) of the power curve, reaction time, whether or not the driver "lifts" the accelerator or power shifts...AND experience (trial and error - see what works best.
Shift point and rev-limiter rpm are not usually the same. Shift points optimize acceleration. Rev limiters are set at the rpm where useful power ends; no practical benefit to rpm exists beyond that point, AND, secondarily to keeps the rpm below the self destruct "threshold".
Specific rpm references depend on mods...IF any. Stock shift and rev limits for an L98 car might be around 4200 for shift and 4500 for rev limit. An LT1 around 5300 and 5800, respectively, & LT4 about 500 rpm higher, & LT5 is 6300/7100 (stock 1990).
So, it depends on the mods or lack there of too.
Shift point and rev-limiter rpm are not usually the same. Shift points optimize acceleration. Rev limiters are set at the rpm where useful power ends; no practical benefit to rpm exists beyond that point, AND, secondarily to keeps the rpm below the self destruct "threshold".
Specific rpm references depend on mods...IF any. Stock shift and rev limits for an L98 car might be around 4200 for shift and 4500 for rev limit. An LT1 around 5300 and 5800, respectively, & LT4 about 500 rpm higher, & LT5 is 6300/7100 (stock 1990).
So, it depends on the mods or lack there of too.
Last edited by Paul Workman; Sep 16, 2016 at 08:39 AM. Reason: tpyos...
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From: milwaukee wi
thanks paul.. that what i was looking for.. my car is fairly stock, with a tune and exhaust only.
yeah i know shift and rev limiter are diff.. 42 and 45 make sense espically since it does seem to have less power that high.. crazy to me that these wind out so fast.. im so used to my small block v8s winding out in the mid 5's.
Yeah im not power shifting, just normal on it, beating around town kinda stuff.
yeah i know shift and rev limiter are diff.. 42 and 45 make sense espically since it does seem to have less power that high.. crazy to me that these wind out so fast.. im so used to my small block v8s winding out in the mid 5's.
Yeah im not power shifting, just normal on it, beating around town kinda stuff.
Melting Slicks
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From: Langley BC
Even with my new engine, I don't really want to risk pushing it to high RPM's, so usually shift at 4600 ish.
Even before I built my new motor I missed some shifts, but it never hurt the engine. I could be wrong on this but from what I've heard the L98 should be safe to rev to 5500 (MAX), but you won't make any power revving that high.
Even before I built my new motor I missed some shifts, but it never hurt the engine. I could be wrong on this but from what I've heard the L98 should be safe to rev to 5500 (MAX), but you won't make any power revving that high.
Last edited by DMITTZ; Sep 16, 2016 at 12:54 AM.
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Le Mans Master
Joined: Oct 2004
Posts: 6,314
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From: South-central Missouri
60% of ZR-1 respondents to a survey to see how many had ever hit the rev limiter (7100 rpm), NEVER had hit it. Furthermore most of those seldom inched over the 6000 rpm mark!
"WAXERS vs. WARRIORS"... We all know that Corvette owners gravitate to one or the other, but I was astounded to by the data that suggests that even among ZR-1 owners; a car specifically born to perform well, that perhaps the majority of the owners never realized the car's potential!
If one can transfer this phenomenon to include other Corvettes (C-whatever), it kinda tells me why GM appears to drag its feet when developing something more advanced (i.e., faster). After all, the majority of their buyers purchase the Vette NOT because of its performance, but for reasons they would have to explain, cuz I can't!!
Shift points? Rev limit? Apparently, these values mean nothing to MOST Corvette owners. Those of us that do concern ourselves with such trivia are apparently in the minority...for what that's worth - and the marketing ppl know it. Kinda puts new light on GM marketing (e.g., resistance to mid-engine(?) development) both past and present, huh?
"WAXERS vs. WARRIORS"... We all know that Corvette owners gravitate to one or the other, but I was astounded to by the data that suggests that even among ZR-1 owners; a car specifically born to perform well, that perhaps the majority of the owners never realized the car's potential!
If one can transfer this phenomenon to include other Corvettes (C-whatever), it kinda tells me why GM appears to drag its feet when developing something more advanced (i.e., faster). After all, the majority of their buyers purchase the Vette NOT because of its performance, but for reasons they would have to explain, cuz I can't!!
Shift points? Rev limit? Apparently, these values mean nothing to MOST Corvette owners. Those of us that do concern ourselves with such trivia are apparently in the minority...for what that's worth - and the marketing ppl know it. Kinda puts new light on GM marketing (e.g., resistance to mid-engine(?) development) both past and present, huh?
Last edited by Paul Workman; Sep 16, 2016 at 09:44 AM.
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From: milwaukee wi
tuner is going to set a rev limiter for me, im thinking ill say 5500,? i will plan on shifting in the low 4's.. but want to set a rev limiter to avoid any misshift damage..
5500 sound reasonable , or should i say lower?
5500 sound reasonable , or should i say lower?
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When the torque has peaked and rev advance slows.
Try experimenting and use different shift points. The timing ticket will tell the truth.
Le Mans Master
Joined: Oct 2004
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From: South-central Missouri
Reaction time...plays a role too: especially in the lower gears and 410 gears (or higher).