HP estimates?
Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 998
Likes: 8
HP estimates?
Hey fella's.
I plan doing a few more mods to the 93 this spring and wanted to get some feedback on what you guys think my rearwheel HP numbers will look like after the bolton's.
The car is a 93 6-speed, stock gears.
-ported stock heads with 3 angle valve job
-Comp Cam 503 cam, 224/230
-1.6RR with upgraded springs
-new opti
-Meziere electric water pump
-Double roller timing chain
-Pacesetter shorty headers
-Random Tech bullit cats
-Borla cat back
-Vortex air rammer intake
-Tuned by Alvin at PCM For Less
I think that's everything. The car pulled between 340-345 to the rear wheels last year. Since then I've added underdrive pulleys and will be adding long tube headers, porting the intake manifold, and 30# SVO injectors along with a mail away tune from Alvin.
I'm hoping for numbers in the 370 range. Let me here your thoughts.
I plan doing a few more mods to the 93 this spring and wanted to get some feedback on what you guys think my rearwheel HP numbers will look like after the bolton's.
The car is a 93 6-speed, stock gears.
-ported stock heads with 3 angle valve job
-Comp Cam 503 cam, 224/230
-1.6RR with upgraded springs
-new opti
-Meziere electric water pump
-Double roller timing chain
-Pacesetter shorty headers
-Random Tech bullit cats
-Borla cat back
-Vortex air rammer intake
-Tuned by Alvin at PCM For Less
I think that's everything. The car pulled between 340-345 to the rear wheels last year. Since then I've added underdrive pulleys and will be adding long tube headers, porting the intake manifold, and 30# SVO injectors along with a mail away tune from Alvin.
I'm hoping for numbers in the 370 range. Let me here your thoughts.
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Originally Posted by Ladimer
I'm hoping for numbers in the 370 range. Let me here your thoughts.
I personally would do a 58mm throttle body......along with intake manifold porting....
Remove screen in MAF....
Were your injectors maxed out on your last tune??? If not I am not sure how much you will gain there unless the existing ones are tired/dirty or ???
Good luck......hope you make it...you should be close.....
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Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 998
Likes: 8
Thanks Bud.
Correct, I do not have a MAF sensor.
My injectors were maxed out at the last tune. Alvin and Rottie suggested I go with the 30# SVO units.
I think I'll get at least 20 more with the long tubes and ported intake and underdrive pulleys, hoping for at least 30 though.
I think I'll call it quits for a minute after this last set of mods...that is, until I lose a race.
Correct, I do not have a MAF sensor.
My injectors were maxed out at the last tune. Alvin and Rottie suggested I go with the 30# SVO units.
I think I'll get at least 20 more with the long tubes and ported intake and underdrive pulleys, hoping for at least 30 though.
I think I'll call it quits for a minute after this last set of mods...that is, until I lose a race.
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
I'm guessing about 25-30hp or so..
Let us know..
ps. how were your injectors maxed out at only 345rwhp???
Don't LT1's come with 24lbs injectors stock?
On my '85 I was pushing over 400hp with the supercharger with 24lbs injectors from a '95 lt1..
Let us know..
ps. how were your injectors maxed out at only 345rwhp???
Don't LT1's come with 24lbs injectors stock?
On my '85 I was pushing over 400hp with the supercharger with 24lbs injectors from a '95 lt1..
Last edited by MrNuke; Mar 28, 2006 at 02:22 PM.
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by Ladimer
The car pulled between 340-345 to the rear wheels last year.
Let us know.
(I'm very surprised it didn't do better than the 340/345hp. That's only about 30hp more than my stock engine
)Larry
code5coupe
Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 998
Likes: 8
I believe they were 22# units. I think the LT4's come with the 24# injectors.
After about 5500 rpm it starts running lean and ends up at about 13.5 to 1 AFR at 6000 RPM. I would think more injector would allow me to run up to 6000-6200 safer and free up some more ponies.
After about 5500 rpm it starts running lean and ends up at about 13.5 to 1 AFR at 6000 RPM. I would think more injector would allow me to run up to 6000-6200 safer and free up some more ponies.
Melting Slicks
Joined: Mar 2003
Posts: 2,472
Likes: 0
From: Toronto ONTARIO
92 -93s were 22# but rated at 24. go figure how gm worked that out. 94 + has #24s. From what i remember readng LT4s had #26 but i can't be sure of that.
Im guessing you are asking about the longtubes, injectors and pullies. I like to be conservative about things (never get dissapointed that way).
I'd guess headers will add 10 rwhp, pullies 2-4, injectors + a tune maybe 5-10 more.
good luck !
Im guessing you are asking about the longtubes, injectors and pullies. I like to be conservative about things (never get dissapointed that way).
I'd guess headers will add 10 rwhp, pullies 2-4, injectors + a tune maybe 5-10 more.
good luck !
Last edited by DieL; Mar 28, 2006 at 04:31 PM.
Melting Slicks
Joined: Mar 2003
Posts: 2,472
Likes: 0
From: Toronto ONTARIO
Originally Posted by rocco16
With all that good stuff, LT headers should pick up 15-20hp. The pulleys maybe 2hp.
Let us know.
(I'm very surprised it didn't do better than the 340/345hp. That's only about 30hp more than my stock engine )
Larry
code5coupe
Let us know.
(I'm very surprised it didn't do better than the 340/345hp. That's only about 30hp more than my stock engine
)Larry
code5coupe
Thread Starter
Burning Brakes
Joined: Sep 2004
Posts: 998
Likes: 8
Originally Posted by DieL
92 -93s were 22# but rated at 24. go figure how gm worked that out. 94 + has #24s. From what i remember readng LT4s had #26 but i can't be sure of that.
Im guessing you are asking about the longtubes, injectors and pullies. I like to be conservative about things (never get dissapointed that way).
I'd guess headers will add 10 rwhp, pullies 2-4, injectors + a tune maybe 5-10 more.
good luck !
Im guessing you are asking about the longtubes, injectors and pullies. I like to be conservative about things (never get dissapointed that way).
I'd guess headers will add 10 rwhp, pullies 2-4, injectors + a tune maybe 5-10 more.
good luck !
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Originally Posted by Ladimer
I believe they were 22# units. I think the LT4's come with the 24# injectors.
After about 5500 rpm it starts running lean and ends up at about 13.5 to 1 AFR at 6000 RPM. I would think more injector would allow me to run up to 6000-6200 safer and free up some more ponies.
After about 5500 rpm it starts running lean and ends up at about 13.5 to 1 AFR at 6000 RPM. I would think more injector would allow me to run up to 6000-6200 safer and free up some more ponies.
........sounds like an injector upgrade is a good idea, but if you haven't I would also replace the fuel filter.......if it is the original it is getting pretty old....maybe gummed up a little......mine is new, just as a precaution...
Racer
Joined: Mar 2005
Posts: 399
Likes: 2
From: Newtown PA
Originally Posted by DieL
he has 340-345 to the 'Wheels'. 02-04 z06s put out the same and were rated at 405 flywheel. so thats 105 over your stocker