Will a 383LT1 make over 400rwhp??
08-28-2002, 11:56 PM
#1
Member
Thread Starter
Join Date: Feb 2002
Location: WI
Posts: 316
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 GTA
Engine: LS1
Transmission: T56
Axle/Gears: 9bolt 3.27s
Will a 383LT1 make over 400rwhp??
I have a little extra money to spend on my GTA, so I am trying to figure out what to buy. I was on an LT1 forum and there was a guy with an LT1 making 397rwhp and 368rwtq and ran 11.98@117mph w/ a stock bottom end, stage2 heads, Comp Cams Extreme 230/236 cam, and the normal bolt-ons. There was another guy with a 97 Camaro SS with the same cam and similar mods that made 406rwhp and 375rwtq. the cars with 383's were making atleast 450rwhp, so I would think I could make similar numbers on my car. I was wondering if I could make 400-450rwhp and rwtq with out of the box AFR195 heads, LT1 intake, LT headers, and the right cam on my 383 stroker if I only revved it to 6000-6250rpm and still be able to drive in stop and go traffic all day? Any replys would be helpfull. Thanks
08-29-2002, 12:17 AM
#2
Member
YES a 383 LT1 with AFR's will easy clear 400 RWHP,
if he right parts are used :lala:
if he right parts are used :lala:
08-29-2002, 08:38 AM
#3
Supreme Member
iTrader: (1)
Join Date: Jan 2001
Location: Quakertown, PA
Posts: 2,117
Likes: 0
Received 18 Likes
on
7 Posts
Car: 1992 Camaro Z28 Convertible Z03
Engine: 383 SuperRam
Transmission: 700R4
Axle/Gears: 2.73
After being jerked around to long building my engine, it is getting done by someone else. It'll be done real soon, but now the heads will be completely stock.
What HP do you think I'll be putting out, it will be 383 LT1 intake, inside of intake is all smoothed out,
the cam is the Crane Compucam 2032. 214 / 220, .452 / .465__112 LSA
Edelbrock T.E.S Headers, Borla 3" adjustable Cat-back, catco high flow cat, , custom Cold air intake, burnt chip. stock heads ( ...I know I know)
I also have a totally rebuilt tranny with kevlar bands, servo, etc, 2100 stall converter. and 3.42 posi 4th gen rear.
what power do you think I'll put out at wheels, at crank?
also, will I be able to hang with/beat 4th gens LS1's?????? I hope so.
What HP do you think I'll be putting out, it will be 383 LT1 intake, inside of intake is all smoothed out,
the cam is the Crane Compucam 2032. 214 / 220, .452 / .465__112 LSA
Edelbrock T.E.S Headers, Borla 3" adjustable Cat-back, catco high flow cat, , custom Cold air intake, burnt chip. stock heads ( ...I know I know)
I also have a totally rebuilt tranny with kevlar bands, servo, etc, 2100 stall converter. and 3.42 posi 4th gen rear.
what power do you think I'll put out at wheels, at crank?
also, will I be able to hang with/beat 4th gens LS1's?????? I hope so.
08-29-2002, 09:47 AM
#4
Senior Member
Join Date: Oct 1999
Location: New Britain, CT, U.S.A
Posts: 566
Likes: 0
Received 0 Likes
on
0 Posts
Car: '87 IROC
Engine: LT1 350
Transmission: 700-R4
Those LT1s with the 400 RWHP spin their motors to 6500 at least. With a 383, yo'd make about 25 more HP at the wheels with the same cam. But you can't be afraid to spin the motor. If you're looking at spinning only to 6000, a Hot cam may be the max for you...but then you won't come close to 400 RWHP.
Trending Topics
01-09-2003, 05:20 AM
#8
Member
Join Date: Dec 2002
Location: virginia
Posts: 122
Likes: 0
Received 0 Likes
on
0 Posts
01-09-2003, 08:19 AM
#9
Senior Member
iTrader: (3)
Join Date: May 2001
Location: FL
Posts: 784
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Z28 - 2000 Z28
Engine: L98 - LS4
Transmission: 700R4 - 4L60E
Axle/Gears: 3.23's - 3.73's
Originally posted by 86FyrBrd
After being jerked around to long building my engine, it is getting done by someone else. It'll be done real soon, but now the heads will be completely stock.
What HP do you think I'll be putting out, it will be 383 LT1 intake, inside of intake is all smoothed out,
the cam is the Crane Compucam 2032. 214 / 220, .452 / .465__112 LSA
Edelbrock T.E.S Headers, Borla 3" adjustable Cat-back, catco high flow cat, , custom Cold air intake, burnt chip. stock heads ( ...I know I know)
I also have a totally rebuilt tranny with kevlar bands, servo, etc, 2100 stall converter. and 3.42 posi 4th gen rear.
what power do you think I'll put out at wheels, at crank?
also, will I be able to hang with/beat 4th gens LS1's?????? I hope so.
After being jerked around to long building my engine, it is getting done by someone else. It'll be done real soon, but now the heads will be completely stock.
What HP do you think I'll be putting out, it will be 383 LT1 intake, inside of intake is all smoothed out,
the cam is the Crane Compucam 2032. 214 / 220, .452 / .465__112 LSA
Edelbrock T.E.S Headers, Borla 3" adjustable Cat-back, catco high flow cat, , custom Cold air intake, burnt chip. stock heads ( ...I know I know)
I also have a totally rebuilt tranny with kevlar bands, servo, etc, 2100 stall converter. and 3.42 posi 4th gen rear.
what power do you think I'll put out at wheels, at crank?
also, will I be able to hang with/beat 4th gens LS1's?????? I hope so.
01-09-2003, 10:07 AM
#12
Supreme Member
iTrader: (1)
Join Date: Jan 2001
Location: Quakertown, PA
Posts: 2,117
Likes: 0
Received 18 Likes
on
7 Posts
Car: 1992 Camaro Z28 Convertible Z03
Engine: 383 SuperRam
Transmission: 700R4
Axle/Gears: 2.73
Well after everything that went on I ended up doin the 350 instead as you all probobly know.
But I still have all the 383 parts, but I got the 2032 basically cause thats what everyone on the boards told me.
the 2032 is in the 350 now though. Whats this other came, I'll look into it for the 383 when I build it.
But I still have all the 383 parts, but I got the 2032 basically cause thats what everyone on the boards told me.
the 2032 is in the 350 now though. Whats this other came, I'll look into it for the 383 when I build it.
01-09-2003, 10:47 AM
#13
Member
Join Date: Dec 2002
Location: virginia
Posts: 122
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by 86FyrBrd
Well after everything that went on I ended up doin the 350 instead as you all probobly know.
But I still have all the 383 parts, but I got the 2032 basically cause thats what everyone on the boards told me.
the 2032 is in the 350 now though. Whats this other came, I'll look into it for the 383 when I build it.
Well after everything that went on I ended up doin the 350 instead as you all probobly know.
But I still have all the 383 parts, but I got the 2032 basically cause thats what everyone on the boards told me.
the 2032 is in the 350 now though. Whats this other came, I'll look into it for the 383 when I build it.
CCA-07-306-8 Competition Cams LT1 Magnum Camshaft
Dur@.050 230-244 | Lift .540" - .576" (1.6 RR) |LSA 112 | RPM Range 1800-5800 $239.95
01-09-2003, 10:56 AM
#14
nope
dude go witha comp custom hyd roller like i did......
mine is a xe282hr cam that has a 112*lsa and small base circle for cam clearence......
i went through pure hell with mine, but i stayed with it and i'm glad i did.. because the first time you hear it loping it makes you feel somthing of proudness knowing you built somthing so great......
yeah, you'll defanantly run into obsticles like cam selection, etc but just sit down and do your math.......... you'll get it...
and the cam that i have has damn good vaccum and brakes are as they was before with the stock cam.... mine is suppose to thump out 475hp and well over 500lbfts of torque..... stealth rammed of course..... so the lt1 intake with easily support that kinda power....
good luck with it and if i can be of any help let me know!!
later adam
mine is a xe282hr cam that has a 112*lsa and small base circle for cam clearence......
i went through pure hell with mine, but i stayed with it and i'm glad i did.. because the first time you hear it loping it makes you feel somthing of proudness knowing you built somthing so great......
yeah, you'll defanantly run into obsticles like cam selection, etc but just sit down and do your math.......... you'll get it...
and the cam that i have has damn good vaccum and brakes are as they was before with the stock cam.... mine is suppose to thump out 475hp and well over 500lbfts of torque..... stealth rammed of course..... so the lt1 intake with easily support that kinda power....
good luck with it and if i can be of any help let me know!!
later adam
01-09-2003, 12:15 PM
#15
Supreme Member
Join Date: Sep 1999
Location: Manassas VA
Posts: 3,197
Likes: 0
Received 6 Likes
on
5 Posts
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
FyrBird, those stock heads will indeed kill you on that combo. Odds are not good that you'd run much more than mid 13s with sucha beast. Done perfect, sure it could do better. But odds are, you're not going to be anywhere near perfect, at least near the start. That cam is obviously small too, but with stock heads, much more would likely be overkill anyway.
385LT1. Noticed the head studs and wanted to add that from what i've always heard, head studs make it impossible to pull/install heads in the car on a thirdgen. Then again, looks like a well done set-up, so maybe yanking an engine isn't a big deal to you for a head gasket. In the grand scheme of things, it really isnt that hard after all.
385LT1. Noticed the head studs and wanted to add that from what i've always heard, head studs make it impossible to pull/install heads in the car on a thirdgen. Then again, looks like a well done set-up, so maybe yanking an engine isn't a big deal to you for a head gasket. In the grand scheme of things, it really isnt that hard after all.
01-09-2003, 12:16 PM
#16
Member
iTrader: (9)
Join Date: Nov 2002
Location: Detroit Suburbs
Posts: 439
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 IROC
Engine: 5.3L
Transmission: Jerico
Axle/Gears: Aluminum 8.6 w/ T2R
I have the same goals: 383 w/ 450-500 FWHP w/ lt1 intake. I already have the intake, and that's about it.
Anyway, I'm seeing that the LT1 guys use cams w/ alot more exhaust duration than intake (230/244 for example). This must be because the exhaust port doesn't flow as relitively well as the intake port. I don't think that all that exhaust duration is needed if your building a NA gen 1 sbc.
I plan on using AFR heads w/ the Lt1 intake. AFR heads have good exhaust flow, so extra exhaust duration isn't needed for NA applications. That's why I say go w/ a comp 330/336 or 336/342 or maybe a custom 336/336. There is a similar post about this in the DIY Prom page right now ("cam selection" or something).
Anyway, I'm seeing that the LT1 guys use cams w/ alot more exhaust duration than intake (230/244 for example). This must be because the exhaust port doesn't flow as relitively well as the intake port. I don't think that all that exhaust duration is needed if your building a NA gen 1 sbc.
I plan on using AFR heads w/ the Lt1 intake. AFR heads have good exhaust flow, so extra exhaust duration isn't needed for NA applications. That's why I say go w/ a comp 330/336 or 336/342 or maybe a custom 336/336. There is a similar post about this in the DIY Prom page right now ("cam selection" or something).
01-09-2003, 05:11 PM
#17
Member
Join Date: Dec 2002
Location: virginia
Posts: 122
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Ed Maher
FyrBird, those stock heads will indeed kill you on that combo. Odds are not good that you'd run much more than mid 13s with sucha beast. Done perfect, sure it could do better. But odds are, you're not going to be anywhere near perfect, at least near the start. That cam is obviously small too, but with stock heads, much more would likely be overkill anyway.
385LT1. Noticed the head studs and wanted to add that from what i've always heard, head studs make it impossible to pull/install heads in the car on a thirdgen. Then again, looks like a well done set-up, so maybe yanking an engine isn't a big deal to you for a head gasket. In the grand scheme of things, it really isnt that hard after all.
FyrBird, those stock heads will indeed kill you on that combo. Odds are not good that you'd run much more than mid 13s with sucha beast. Done perfect, sure it could do better. But odds are, you're not going to be anywhere near perfect, at least near the start. That cam is obviously small too, but with stock heads, much more would likely be overkill anyway.
385LT1. Noticed the head studs and wanted to add that from what i've always heard, head studs make it impossible to pull/install heads in the car on a thirdgen. Then again, looks like a well done set-up, so maybe yanking an engine isn't a big deal to you for a head gasket. In the grand scheme of things, it really isnt that hard after all.
although, the new studs make it easier to remove, in order to clean the deck...
(BTW: the studs were removed after the heads came off....)
01-09-2003, 05:21 PM
#18
Senior Member
iTrader: (3)
Join Date: May 2001
Location: FL
Posts: 784
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Z28 - 2000 Z28
Engine: L98 - LS4
Transmission: 700R4 - 4L60E
Axle/Gears: 3.23's - 3.73's
AFR heads have good exhaust flow, so extra exhaust duration isn't needed for NA applications.
01-09-2003, 06:52 PM
#19
Junior Member
Join Date: Nov 2002
Location: Surrey, BC
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 GTA
Engine: L98 350, dual cats
Transmission: 700R-4
Noticed the head studs and wanted to add that from what i've always heard, head studs make it impossible to pull/install heads in the car on a thirdgen.
I haven't tried this, just something I heard a few years ago.
Dave
01-09-2003, 07:00 PM
#20
Member
Join Date: Dec 2002
Location: virginia
Posts: 122
Likes: 0
Received 0 Likes
on
0 Posts
Look close at these studs.... they are ARP's new product line...
No screwdriver trick needed here...
3/8" Air Ratchet and they will be out quicker than you installed them.
No screwdriver trick needed here...
3/8" Air Ratchet and they will be out quicker than you installed them.
Thread
Thread Starter
Forum
Replies
Last Post
mustangman65_79
Body
3
08-11-2015 03:17 PM
