Building an 8000 rpm LT1 - Page 3 - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #31 of 42 (permalink) Old 03-18-2010, 05:10 AM Thread Starter
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thanks bro, i would think it will need a small bore as it has 146,ooo or so on it so it will need a little cleaning up im sure... and also i am no fast and furiouse driver..lol, but it is fun to hang the ass end out there and hear it wind up!

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post #32 of 42 (permalink) Old 03-18-2010, 05:29 AM
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It might not need a bore. I tore my motor apart with 190,000 and there was no ridge in it at all, well it was .0005, gotta love gm light tension rings, at least they were good for something.
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post #33 of 42 (permalink) Old 03-18-2010, 05:37 AM Thread Starter
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thats great, i am not sure what the iron head motor looks like yet,i hope its clean in there, my car is the one with the high miles, that motor will go in the garage and be built at a later date, money money money...lol

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post #34 of 42 (permalink) Old 03-18-2010, 10:18 AM
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Quote:
Originally Posted by Edward-T View Post
yea i know! a bunch of us down here like to go out at night and do some drifting at this abandoned factory down the road, just want a stout bottom end that wont fly apart, my car is not where it needs to be yet but it drifts fairly good, need more suspension and a stroger motor, possibly a better rear end as the 10 bolts are not that strong, but for now it is holding, so a 355 or a 396 or a stock bore with forged internals?? i am open to suggestions!

dude you aren't whippin around a vtec honda. get some low end torque and really let the rear loose


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this is the internet, take it to seriously and you won't get out alive.
http://www.youtube.com/watch?feature...&v=iPMmW3giQQc
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post #35 of 42 (permalink) Old 03-18-2010, 11:02 AM Thread Starter
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oh yea i know, trust me i hang it out, its mostly imports there, and a few stangs, me an a buddy (96 SS) go down and beat on them on occasion, lol!!!

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post #36 of 42 (permalink) Old 03-18-2010, 11:39 AM
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edit: (google is my friend)
"When we say that something "bears repeating" we are saying that it is important enough to say (or write) again, in the hope that the statement is understood by the audience. This would usually not be used in good quality formal writing"


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post #37 of 42 (permalink) Old 05-15-2010, 11:14 AM
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Quote:
Originally Posted by BLK WS6 View Post
The LT1 tables actually max out at 7000 rpm...but maybe with stock tach or shift extensions it appears more.
Are you sure about the 7K limit
My 355 uses the stock PCM with ED Wright tune and according to my datalogs it regulary spins above 7K rpm....

Maybe my datalogs are wrong?

As for the OP 7K shortblock is easy as for 8K I'd use a totally forged rotating assembly.....shortblock assembled and balanced by a (GOOD MACHINIST) and it won't be cheap....7K shortblock stock crank, forged rods and pistons....and once again balanced and assembled by a Good machinist will provide a reliable base for your engine.


However, the limiting factor of your build is going to be valve train....


Cheap, Fast, Reliable.......choose two....



Mike

1995 Corvette, AI 200CC heads, EM LTs, D44 w/3.45s, 3500vig, 58CC TB, Mez HD EWP etc.

Last edited by aboatguy; 05-15-2010 at 11:21 AM.
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post #38 of 42 (permalink) Old 05-15-2010, 12:57 PM
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Are you sure about the 7K limit
My 355 uses the stock PCM with ED Wright tune and according to my datalogs it regulary spins above 7K rpm....

Maybe my datalogs are wrong?

What datalogging software are you using? I know Datamaster stops logging at ~6375 but the RPM line keeps going but doesn't tell you what it is.

Every LT1 OBDI PCM i've tinkered with the values stop at 7050. I've heard that OBDII can squeak past 7050.
post #39 of 42 (permalink) Old 01-17-2013, 06:54 AM
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Sorry for resurrecting a dead thread.... If you're using data master selecting RPM16 will show RPM above 6375

Mike

1995 Corvette, AI 200CC heads, EM LTs, D44 w/3.45s, 3500vig, 58CC TB, Mez HD EWP etc.
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post #40 of 42 (permalink) Old 02-05-2013, 05:15 PM
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only 2.7 years too late......................
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post #41 of 42 (permalink) Old 02-06-2013, 07:24 PM
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Zombie thread....... Grnnnnnnndddd brains.....



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Originally Posted by ShowNoMercy
You have a automatic, a dyno will only hurt feelings.
Go race your car
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post #42 of 42 (permalink) Old 02-06-2013, 08:42 PM
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Originally Posted by SlowAss94LT1 View Post
The first thing that came to mind was the rpm restriction with a stock lt1 computer. The max you can have it tuned to is 7200-7250rpm. You're only choice would be a full stand alone engine mangement system. $$$$$
Megasquirt.
300 bucks. Full stand alone fuel/spark.
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