Whats the most hp ever made from a stock bottom end lt1 with power adder??
i love it!!! 
03-30-2013, 03:47 PM
#26
She was fun to tune. Had about 5 hours of tuning time on her.
SD tune w/3Bar Map sensor working the old OBD1 CATS program = not much room on that little 105kpa map for 3bar
, takes a little time to dial her in entering each cell by hand for the most part. Boost comes in quickly at 3800 Oooooooo. form 5psi to 20 psi in 1k rpms, gets a little harry 
Here is the Graph she left the shop in.. 19psi little more conservative on the timing.
All in the name of horsepower !
Clint
SD tune w/3Bar Map sensor working the old OBD1 CATS program = not much room on that little 105kpa map for 3bar
, takes a little time to dial her in entering each cell by hand for the most part. Boost comes in quickly at 3800 Oooooooo. form 5psi to 20 psi in 1k rpms, gets a little harry Here is the Graph she left the shop in.. 19psi little more conservative on the timing.
All in the name of horsepower !
Clint
Last edited by HUGGER ORANGE SS; 03-30-2013 at 03:56 PM.
03-30-2013, 06:50 PM
#27
Nice, glad to see what a stock LT1 can do, too many people jump the gun about how "BAD" the LT1 is, and its really not.
How much timing, I do around 27-30 on my boosted LT's, on a stock LB never played with one boosted so just curious?
How much timing, I do around 27-30 on my boosted LT's, on a stock LB never played with one boosted so just curious?
03-30-2013, 09:45 PM
#30
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https://ls1tech.com/forums/lt1-lt4-m...turbo-lt1.html
i dont seem to have pics of the motor build i swore i did, but its a 95 block, .030 over, callies 4 bolt splayed main caps. callies 3.75 stroke crank, oliver 6 inch I beams, diamond 32cc dish pistons, zero decked, lt4 casting heads max effort ported by me 323 cfm @ .700 lift, 2.23 sq/in cross section, 235 cc port, exhaust was raised .300 flow 211 @ .700 lift 2.080 1.6 valves 60cc chambers, cometic MLS .040 gaskets. custom grind comp 240 244 @ .050 on a 114 spread, .630 .644 lift with 1.6 gold series rockers. installed on a 112 centerline. 8.32:1 compression. the intake i ported my self also with an average 301cfm runner flow, a litte pit of plenum work but nothing crazy, tb opening matched to the holley twin 58mm. 60 pound injectors.
the turbo in the pics is an ebay "t70" i used for mock up. i did run it but a 50mm turbo and a 48mm hotside well she didnt last long, saw 9 pounds by 3000 rpm then she locked up ha ha ha
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the turbo in the pics is an ebay "t70" i used for mock up. i did run it but a 50mm turbo and a 48mm hotside well she didnt last long, saw 9 pounds by 3000 rpm then she locked up ha ha ha
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03-31-2013, 12:53 AM
#32
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Is this the same build were talking about? You have a thread with an all rebuilt bottom end. Or is this a different motor?
https://ls1tech.com/forums/lt1-lt4-m...turbo-lt1.html
https://ls1tech.com/forums/lt1-lt4-m...turbo-lt1.html
that was a loooooooong time ago lol long long time ago, that motor is long gone lol.
this one is BONE stock besides a cam and better springs. never touched the bottom end, pulled heads to check piston tops then sealed her back up with stock rod bolts and head gaskets . . . .
i am just sick of hearing LS1 guys saying the LT1 is a pile of **** and wont take high boost or high power. now as far as i am now i cant say it has lasted, but so far so good no issues.
ALTHOUGH, today i pulled the trans to check out the clutch because of a goofy noise, and found the clutch is toasted . . . a F@#king twin disc got me a whopping 40 pulls and went to ****?????
so i bit the bullet and got a Coan pro 400. no more stick shift for me.
track opens the 13th of april so i have some work to do to convert to the auto. ill be back to the dyno for a retune and final dial in next week.
03-31-2013, 12:29 PM
#35
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Mcleod rxt twin . . . . not sure what the hell happened but its toast . . . .
i really wasnt expecting to run the stick for very long so i figure going auto early cant hurt. cant go very fast and consistent with a stick and a big turbo anyways lol
So can i officially say i set a new record for highest hp on a stock long block with cam only?
the dyno graph above isnt my highest pull, thats the graph after we came down a bit and got it on a safe tune.
heres the 784/820 graph, not a ton of tuning was done on this pull, picked up a lot of power under the curve from this one.
i really wasnt expecting to run the stick for very long so i figure going auto early cant hurt. cant go very fast and consistent with a stick and a big turbo anyways lol
So can i officially say i set a new record for highest hp on a stock long block with cam only?
the dyno graph above isnt my highest pull, thats the graph after we came down a bit and got it on a safe tune.
heres the 784/820 graph, not a ton of tuning was done on this pull, picked up a lot of power under the curve from this one.
03-31-2013, 12:43 PM
#37
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03-31-2013, 06:30 PM
#40
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