[Z06] 450CI HC LS7 RHS Build hp guess
#1
Instructor
Thread Starter
450CI HC LS7 RHS Build hp guess
Whats yalls guess on HP and tq
450ci 11.8cr
Block: RHS
Bottom end: callies & weisco pistons
Cam: 247/263 624 lift, PBM lifters, stock lifters with upgrade
Heads: Mast black lable 305
Intake: NW 102mm, Ported fast lsxr
Misc: LS9 oil pump, AtI super damper
Exhaust: Stainless works 2" header, off road mids and cross cat back
Clutch: Monster stage 3 clutch
Built by Wes Choate and Art at Sho-Me speed in Nixa No.
450ci 11.8cr
Block: RHS
Bottom end: callies & weisco pistons
Cam: 247/263 624 lift, PBM lifters, stock lifters with upgrade
Heads: Mast black lable 305
Intake: NW 102mm, Ported fast lsxr
Misc: LS9 oil pump, AtI super damper
Exhaust: Stainless works 2" header, off road mids and cross cat back
Clutch: Monster stage 3 clutch
Built by Wes Choate and Art at Sho-Me speed in Nixa No.
Last edited by Daniel Hoffele; 04-24-2014 at 04:54 PM.
#7
Melting Slicks
Depending on lobe selection at least it shouldn't be hard on valve springs but it's gunna be hard to drive at under 2000 rpm with light throttle input...assuming you're into that sort of thing
Should be a great road race set-up though, lots of top end pull.
Cheers, Paul.
Should be a great road race set-up though, lots of top end pull.
Cheers, Paul.
#10
i would think more...??
i made 612rwhp/565rwtq with a stock shortblock and stock compression. fast 102/102 setup 1 7/8 kooks, no cats, npp mufflers, wcch st 2 heads stock compression, lg x4 cam, iw 10% dampner. seems like some of these big cubes, high compression, bigger cam setups would be making 700+rwhp.
i made 612rwhp/565rwtq with a stock shortblock and stock compression. fast 102/102 setup 1 7/8 kooks, no cats, npp mufflers, wcch st 2 heads stock compression, lg x4 cam, iw 10% dampner. seems like some of these big cubes, high compression, bigger cam setups would be making 700+rwhp.
#11
i would think more...??
i made 612rwhp/565rwtq with a stock shortblock and stock compression. fast 102/102 setup 1 7/8 kooks, no cats, npp mufflers, wcch st 2 heads stock compression, lg x4 cam, iw 10% dampner. seems like some of these big cubes, high compression, bigger cam setups would be making 700+rwhp.
i made 612rwhp/565rwtq with a stock shortblock and stock compression. fast 102/102 setup 1 7/8 kooks, no cats, npp mufflers, wcch st 2 heads stock compression, lg x4 cam, iw 10% dampner. seems like some of these big cubes, high compression, bigger cam setups would be making 700+rwhp.
#12
Instructor
Thread Starter
Pretty sure it has 114LSA
Its a weekend street car so I don't mind some bucking and what not...just wanted a nasty n/a motor that would be fun
QUOTE=MTIRC6Z;1586743347]Depending on lobe selection at least it shouldn't be hard on valve springs but it's gunna be hard to drive at under 2000 rpm with light throttle input...assuming you're into that sort of thing
Should be a great road race set-up though, lots of top end pull.
Cheers, Paul.[/QUOTE]
Its a weekend street car so I don't mind some bucking and what not...just wanted a nasty n/a motor that would be fun
QUOTE=MTIRC6Z;1586743347]Depending on lobe selection at least it shouldn't be hard on valve springs but it's gunna be hard to drive at under 2000 rpm with light throttle input...assuming you're into that sort of thing
Should be a great road race set-up though, lots of top end pull.
Cheers, Paul.[/QUOTE]
#13
Melting Slicks
Pretty sure it has 114LSA
Its a weekend street car so I don't mind some bucking and what not...just wanted a nasty n/a motor that would be fun
QUOTE=MTIRC6Z;1586743347]Depending on lobe selection at least it shouldn't be hard on valve springs but it's gunna be hard to drive at under 2000 rpm with light throttle input...assuming you're into that sort of thing
Should be a great road race set-up though, lots of top end pull.
Cheers, Paul.
Its a weekend street car so I don't mind some bucking and what not...just wanted a nasty n/a motor that would be fun
QUOTE=MTIRC6Z;1586743347]Depending on lobe selection at least it shouldn't be hard on valve springs but it's gunna be hard to drive at under 2000 rpm with light throttle input...assuming you're into that sort of thing
Should be a great road race set-up though, lots of top end pull.
Cheers, Paul.
I've heard from some corners that the lower lift longer duration cams just 'live' far better in these engines (something my experience does not dispute) compared to higher lift and shorter duration, while each will make similar power it's done in different ways.
Cheers, Paul.
#14
Going from an LPE 660 set up to a stroked RHS 450ci with all forged short block and Jesel Pro shaft rockers and SS exhaust valves, I was concerned it would not have that instantaneous rev I was used to. Not hardly, I had close to 36,000 miles on the 660 pkg.,so very familiar. The new motor acts identical except for extreme bump in power!!!! I can not imagine a funner car to drive, have over 10K miles on it now and I'm impressed every time I drive it. Over 700 hp in a light weight small block revving to 7500 ain't slumming. On PS2s hitting third gear on full boil breaks loose effortlessly at around 100. That on pump gas, getting groceries or road tripping, whatever! Never worrying of overheating, heat soak, etc. My opinion, it doesn't get better than that. Running street tires, new PSS, or any brand I don't worry of driveline breakage. If I was running drag radials it would be a major concern.
#16
Melting Slicks
Going from an LPE 660 set up to a stroked RHS 450ci with all forged short block and Jesel Pro shaft rockers and SS exhaust valves, I was concerned it would not have that instantaneous rev I was used to. Not hardly, I had close to 36,000 miles on the 660 pkg.,so very familiar. The new motor acts identical except for extreme bump in power!!!! I can not imagine a funner car to drive, have over 10K miles on it now and I'm impressed every time I drive it. Over 700 hp in a light weight small block revving to 7500 ain't slumming. On PS2s hitting third gear on full boil breaks loose effortlessly at around 100. That on pump gas, getting groceries or road tripping, whatever! Never worrying of overheating, heat soak, etc. My opinion, it doesn't get better than that. Running street tires, new PSS, or any brand I don't worry of driveline breakage. If I was running drag radials it would be a major concern.
Cheers, Paul.
#17
Melting Slicks
Very similar to my setup:
RHS 447ci - 11:8:1
MAST 305cc 70cc chambered heads
Cometic .045 head gasket
248/262 .651/.631 111 LSA cam
Diamond -4cc pistons w/ coated skirts
Callies H-beam rods
Callies Compstar crank
Wilson sheet metal intake
NW102 TB
ID1000 injectors
ARH 2" headers w/ ORX
Akrapovic Ti exhaust
RPS Carbon Twin clutch
ProEFI 128
Stand alone fuel system for nitrous
200hp wet plate system currently
Old motor setup made 617/575 n/a. Expectations are between 625-650whp n/a + a 200 shot. So ~ 850whp on nitrous. Should have it all back together here in a couple more weeks.
RHS 447ci - 11:8:1
MAST 305cc 70cc chambered heads
Cometic .045 head gasket
248/262 .651/.631 111 LSA cam
Diamond -4cc pistons w/ coated skirts
Callies H-beam rods
Callies Compstar crank
Wilson sheet metal intake
NW102 TB
ID1000 injectors
ARH 2" headers w/ ORX
Akrapovic Ti exhaust
RPS Carbon Twin clutch
ProEFI 128
Stand alone fuel system for nitrous
200hp wet plate system currently
Old motor setup made 617/575 n/a. Expectations are between 625-650whp n/a + a 200 shot. So ~ 850whp on nitrous. Should have it all back together here in a couple more weeks.
#18
Team Owner
Intake manifolds usually limits the power on these cars. Fast just doesn't flow that well at 600+ so big cubes usually see a nice mid range bump but not much on the high end. Unless someone does a different intake you aren't going to see 700+rwhp n/a z06 any time soon.
#19
Melting Slicks
Best of luck man and keep us posted gonna be a monster either way I say 630rwhp 565rwtq