383s Why is every LT1 I see a Complete Turd?
Registered User
Joined: Jun 1999
Posts: 329
From: TEXAS
No its not NA.....its D1SC force fed.....sorry it didn't say NA on the topic heading....guess I was just kind of scanning over the topic.
500 rwhp shouldn't be that hard to do with a good set of 18 degree heads and a custom intake though. Hell look at Jim's motor he made over 650 flywheel hp with his NA 396.
500 rwhp shouldn't be that hard to do with a good set of 18 degree heads and a custom intake though. Hell look at Jim's motor he made over 650 flywheel hp with his NA 396.
Registered User
Joined: Sep 2000
Posts: 550
From: KC; Where grandma drives in the left lane
Originally posted by FASTFATBOY
Nitrous has a cooling effect that boost does not have, pro mod motors run 15 or more to 1 and spray god knows how much to those engines.
David
Nitrous has a cooling effect that boost does not have, pro mod motors run 15 or more to 1 and spray god knows how much to those engines.
David
. How much spray????!?!?
Registered User
Joined: Jan 2001
Posts: 293
From: houston, Tx
The 383/396 will make more power and beat the 355 any day all else being equal. Just running a 383/396 with all the same stuff will not result in much power increase over the 355. However you can run more head and cam before running out of rpm or streetability with the larger engines than you can with the smaller ones.
A well built 327 with great heads and intake with a big cam can blow away a 406 without that stuff but if you have the 406 in a similar state of tune it will again be faster. The 383/396 can run a more radical combination before "seeming" radical so it's nicer for the street than a 355 for most people. It's also a little extra free low end from the larger displacement.
A well built 327 with great heads and intake with a big cam can blow away a 406 without that stuff but if you have the 406 in a similar state of tune it will again be faster. The 383/396 can run a more radical combination before "seeming" radical so it's nicer for the street than a 355 for most people. It's also a little extra free low end from the larger displacement.
Registered User
Joined: Oct 2001
Posts: 401
From: VA
I havnt made a full pull on a dyno,and to be honest i have no reason to...Track is where I like to string her out ,not on a dyno..however I did make half a pull before it hazed the slicks on the rollers at 4200 rpm is put down 468 rwhp torque was 652ft lbs at lil under 3000.. I will try to dyno it again in a month or so just to find out how much she is putting down...but if its any concellation my shift points are 7600 rpm...
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
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Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
Originally posted by Joes94TA
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
congrats joe!.......show those LS1's we still have some ***** left.
Registered User
Joined: Jun 2002
Posts: 471
From: Evansville,IN,USA
Originally posted by Joes94TA
I havnt made a full pull on a dyno,and to be honest i have no reason to...Track is where I like to string her out ,not on a dyno..however I did make half a pull before it hazed the slicks on the rollers at 4200 rpm is put down 468 rwhp torque was 652ft lbs at lil under 3000.. I will try to dyno it again in a month or so just to find out how much she is putting down...but if its any concellation my shift points are 7600 rpm...
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
I havnt made a full pull on a dyno,and to be honest i have no reason to...Track is where I like to string her out ,not on a dyno..however I did make half a pull before it hazed the slicks on the rollers at 4200 rpm is put down 468 rwhp torque was 652ft lbs at lil under 3000.. I will try to dyno it again in a month or so just to find out how much she is putting down...but if its any concellation my shift points are 7600 rpm...
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
Nuthin but respect here.....
Registered User
Joined: Aug 2002
Posts: 164
From: Pleasanton, CA USA
<spam>
I'm selling the LT1 heads that went 9.82/145 with my ys-trim on a lazy launch and 9.94/139 with the s-trim.
http://para.noid.org/~lj/ForSale/ForSale.htm
They are 100% fresh, clean, bagged, and ready to bolt on.
</spam>
I'm selling the LT1 heads that went 9.82/145 with my ys-trim on a lazy launch and 9.94/139 with the s-trim.
http://para.noid.org/~lj/ForSale/ForSale.htm
They are 100% fresh, clean, bagged, and ready to bolt on.
</spam>
Registered User
Joined: Dec 2003
Posts: 2,724
From: Oklahoma where trees are made of wood.
Originally posted by Joes94TA
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
Just a side note though this n/a lt1 got beat on the tree at the thunder shootout..it did however out ET the fastest n/a ls1 in the country side by side in the finals..
Good job, were you sleeping....lol
That is one bad car you have!!!
Registered User
Joined: Aug 2001
Posts: 287
From: jacksonville, fl usa
one of our "turds" made 457 rwhp at 6000 rpm and 433 rwtq at 5000 rpm uncorrected last saturday; the corrected numbers were 445/422. this is a 383 LT1 (5.7" rods) M6, stock heads done by combination motorsports, 236/242 XE hydraulic roller, 36# injectors, long tubes and an open cutout. a/f was 11.8:1 on the last pass. this engine was built for nitrous and should make 600 to the wheels with a conservative tune-up on a single stage hit of the giggle gas.
my car hasn't been on the dyno yet, but it is very similar to this one. only differences are 6" rods, a little smaller (230/236) cam (mine has more lift though) and my heads might flow 13-15 cfm less at higher lift (.650). i won't have my car on the dyno in the near future, but it went 93 mph in the 1/8 a couple of saturdays ago. this was with a dead PCM (flashing SES light), no tuning for the stroker and a dead driver's side O2 sensor. PCM and O2 will be replaced this week, and i'll have the same program flashed that was in the other car before going to gainesville on thursday afternoon. i'm hoping to see 94-95 mph in the 1/8 and 118-120 on the big end if the conditions are favorable and it doesn't break. i'll post results thursday night.
my car hasn't been on the dyno yet, but it is very similar to this one. only differences are 6" rods, a little smaller (230/236) cam (mine has more lift though) and my heads might flow 13-15 cfm less at higher lift (.650). i won't have my car on the dyno in the near future, but it went 93 mph in the 1/8 a couple of saturdays ago. this was with a dead PCM (flashing SES light), no tuning for the stroker and a dead driver's side O2 sensor. PCM and O2 will be replaced this week, and i'll have the same program flashed that was in the other car before going to gainesville on thursday afternoon. i'm hoping to see 94-95 mph in the 1/8 and 118-120 on the big end if the conditions are favorable and it doesn't break. i'll post results thursday night.
Banned
Joined: Jan 2002
Posts: 1,935
From: Mobile, Ala..USA
Originally posted by Zepher
What gets me is that 2 of my friends have stock bottom ended LT1's and they are pushing 430+ and 452rwhp.
The highest RWHP for a stock bottom ended LT1 that I know of is SAR2K's Trans Am that made 450 or so with the cutout open, drive belt off, and converter locked with a BIG hydraulic roller. Normally aspirated.
I am hoping for 500 RWHP with mine, Its not gonna be your average solid roller 383.
David
What gets me is that 2 of my friends have stock bottom ended LT1's and they are pushing 430+ and 452rwhp.
The highest RWHP for a stock bottom ended LT1 that I know of is SAR2K's Trans Am that made 450 or so with the cutout open, drive belt off, and converter locked with a BIG hydraulic roller. Normally aspirated.
I am hoping for 500 RWHP with mine, Its not gonna be your average solid roller 383.
David
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Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
Originally posted by FASTFATBOY
The highest RWHP for a stock bottom ended LT1 that I know of is SAR2K's Trans Am that made 450 or so with the cutout open, drive belt off, and converter locked with a BIG hydraulic roller. Normally aspirated.
The highest RWHP for a stock bottom ended LT1 that I know of is SAR2K's Trans Am that made 450 or so with the cutout open, drive belt off, and converter locked with a BIG hydraulic roller. Normally aspirated.
one of joe overtons customers (board name 97 WS6 T/A Conv)made 452.0 RWHP and 398 RWTQ on stock bottom in street trim (no belt off) n/a in an M6.
i think those are the two highest rwhp stock bottom n/a lt1's.
Last edited by got_hp?; Jan 26, 2004 at 08:05 PM.
Registered User
Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
Originally posted by LT4POWR
Please show dynojet SAE graphs for these cars
Please show dynojet SAE graphs for these cars
97 WS6 T/A Conv dyno sheet
Registered User
Joined: Oct 2001
Posts: 401
From: VA
Originally posted by WS Sick
Do you have a site or somewhere we ca look at that beast at?
Good job, were you sleeping....lol
That is one bad car you have!!!
Do you have a site or somewhere we ca look at that beast at?
Good job, were you sleeping....lol
That is one bad car you have!!!
Lethal EFI/Joe Overton
link to ls1 vs lt1 n/a race:
mikey vs Joe