Bolt-On Mods RPM Shift Points
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Bolt-On Mods RPM Shift Points List your mods and at what shift RPM do you get your best ET and MPH at? If you have have them, list comparative runs with different shift points so others have something to compare with what their cars are doing.
Joe
PS. I haven't been to the track with my car and I'm curious what to expect with different shift points. I CAN'T do a Title change on the thread but let's just open this up to all LT1 engined cars regardless of your mods! Just give a thorough description of your modifications if they aren't in your Signature!
Joe
PS. I haven't been to the track with my car and I'm curious what to expect with different shift points. I CAN'T do a Title change on the thread but let's just open this up to all LT1 engined cars regardless of your mods! Just give a thorough description of your modifications if they aren't in your Signature!
Last edited by StraightTimeStirrups; Aug 20, 2012 at 08:25 PM.
On stock valvesprings and rockers I shift at 6000-6100 by the factory tach for best ET and mph. If I shift at 5200 which is stock I lose a half second. I definitely feel the valve float though, and am excited to test my new 918s and 1.6 NSA cranes
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To get this back on track so to speak. Can you list your mods and what your best shift points are through testing them on the track?
Every car and combination are going to have a "Best RPM to Shift At" and I am curious what yours are not debate why this that or the other!
Joe
Every car and combination are going to have a "Best RPM to Shift At" and I am curious what yours are not debate why this that or the other!
Joe
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To get this back on track so to speak. Can you list your mods and what your best shift points are through testing them on the track?
Every car and combination are going to have a "Best RPM to Shift At" and I am curious what yours are not debate why this that or the other!
Joe
Every car and combination are going to have a "Best RPM to Shift At" and I am curious what yours are not debate why this that or the other!
Joe
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It's all subjective depending on the car...somebody with a 6spd, 3200lb Corvette, with 4.10 gears is going to have different optimal shift points than auto, 4000lb Caprice, with 3.23's......even more so when you start changing valve springs, roller rockers allowing it to rev a few hundred RPM more without terrible valve float. You need to be more specific or it's an apple to oranges comparison.
It continues to amaze me why people never respond to the intent of a thread and/or question posed and have to respond with the obvious statement that you can't compare apples to oranges!
Quite possibly if people would post their mods and what shift points gave them their best times someone with a similar set up they could compare their apple to another apple so to speak!
Joe
NO KIDDING!
It continues to amaze me why people never respond to the intent of a thread and/or question posed and have to respond with the obvious statement that you can't compare apples to oranges!
Quite possibly if people would post their mods and what shift points gave them their best times someone with a similar set up they could compare their apple to another apple so to speak!
Joe
It continues to amaze me why people never respond to the intent of a thread and/or question posed and have to respond with the obvious statement that you can't compare apples to oranges!
Quite possibly if people would post their mods and what shift points gave them their best times someone with a similar set up they could compare their apple to another apple so to speak!
Joe
lol...5900 rpm no matter what...that what you wanted to hear?
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No, What I wanted to read are peoples real world experiences with their cars not some comments that are so obvious that they don't need to be said! 
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From: centerville, ohio
1-2 6250 2-3 6100............... Cant really give much info on before when shifts were slightly less do the fact it was 50ish out verses 79 or so when I ran some 12.8-12.9's at 106ish with lower shift points. Also my best times were with my trans having somewhat of a lazy 2-3 shift.
I hope this helps. Many many years ago when my 94 Formula was just bolt ons (AS&M Headers, CAI, 3.73 gears, 2400 Stall) I was shifting about 6100 RPM. It's a full weight car and was cutting 1.9-2.0 60' times on street tires, I was running 13.3 @ 105. I was told by numerous people that I was shifting too high. I put it back to stock shift points and ran a 14.0 @ 100. I tweaked each shift point and ended back at the 6100 I was at before. I'm not saying that is best but it was best in my situation.
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As far as the fastest Bolton guys who frequently post here (me, camaroracing12, lt1 xjs etc) we all shift around 6000-6100. I don't think any of us have hit a dyno but we have all made a lot of track passes. Common knowledge is now that a full bolton lt1 shifting at 6000 rpm with good tires and a good driver WILL run mid to high 12s in under 2000 DA. If you can't run 12s in under 2000 DA with full boltons, your opti is broken.