LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Stock bottom end @ 6500RPM?

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Old Aug 3, 2003 | 08:20 PM
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magius231's Avatar
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From: Winston Salem, NC
Stock bottom end @ 6500RPM?

can the stock bottom end and lifters handle 6500RPM with any regularity? I'm thinking of going with a 230/236 cam but am bit scared by the 6500RPM need there. I'm wondering if I should go with a little tamer 224/230 or 218/224. I don't have the money for a rebuild. Anyone have any good insight into this?
Old Aug 3, 2003 | 08:30 PM
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i have taken mine to 7000!!! It stayed together, and I have the Datamaster run to prove it stayed there for a whole 3 seconds!! Killin my A4 but the stock bottom end stayed together w/90,000 Miles
Old Aug 3, 2003 | 08:32 PM
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Ive been upto 7k and back many times on the bottle

JOE96Z28SS: can u email me ur datamaster file ?! everytime i log my car datamaster's rpm cell stops reading past 6370 (or somewhere in that area) everything else logs fine except for the rpm readings wierd eh
Old Aug 3, 2003 | 08:39 PM
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Mine's seen 6800 a few times, on the stock cam, by accident.

IMO, if you want to see some longevity out of your bottom end, 6500 would be the limit. I'm shifting mine at 6400.
Old Aug 3, 2003 | 08:41 PM
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Originally posted by sideways_Into_3rd
JOE96Z28SS: can u email me ur datamaster file ?! everytime i log my car datamaster's rpm cell stops reading past 6370 (or somewhere in that area) everything else logs fine except for the rpm readings wierd eh
use rpm16. the regular rpm box is limited to 6375 due to the binary code. rpm16 is more accurate as well.
Old Aug 3, 2003 | 08:59 PM
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I'll get it off my laptop tomorrow! Mine has no settings different than default but I just installed it. also when the car hit's 7000 on the datalog, the stock rpm Gauge is past 7!
Old Aug 3, 2003 | 09:33 PM
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94 CAMRO Z28's Avatar
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I've had mine up to 6400 a number of times without any problems. These little SBs love to rev.. its just the valve train that limits the rpms...to an extent..

Aaron
Old Aug 3, 2003 | 09:35 PM
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Originally posted by sideways_Into_3rd
everytime i log my car datamaster's rpm cell stops reading past 6370 (or somewhere in that area) everything else logs fine except for the rpm readings wierd eh
Because the PCM wont read out more than I believe 6470 RPM, thats how fast the ALDL can put out period. You'd have to look at MPH to figure it out. OBD II should I believe be able to output faster.
Old Aug 3, 2003 | 10:02 PM
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nope, use rpm16 it will give you your correct value. pcm will give datamaster rpm value as far as you can rev it.
Old Aug 3, 2003 | 10:13 PM
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Originally posted by thewinner
nope, use rpm16 it will give you your correct value. pcm will give datamaster rpm value as far as you can rev it.
I'm gonna post my datamaster File, Is it correct? how do I check the RPM 16 thing??? is my dashgauge right? I set my Rev to 7025 it'll only hit 7 when I manually shift it though
Old Aug 3, 2003 | 10:22 PM
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i have a 230/236 cam on a stock bottom end with 120,000 miles and i spin to 6,500 at the track. be careful though, the load on the bearings past 6,500 is greatly increased.
Old Aug 3, 2003 | 11:32 PM
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cool thanks! Guess I'll go ahead with the 230/236 in anticipation of ported Lloyds heads later. Hoping for 117MPH out of that combo!
Old Aug 4, 2003 | 05:11 AM
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sent mine to 6500 numerous times......I think it likes it ......oh and it has 94000 on the clock
Old Aug 4, 2003 | 08:15 PM
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I shift mine at 6,500-6,600 regularly. Pulls to 6,900 on the dyno without a drop in hp.
Old Aug 4, 2003 | 09:13 PM
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lt4 fd's Avatar
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do you think a fluidamper would help much?



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