Daniel Hoffele

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.

EnginerdVT

mid 600's... Sounds vicious!

Daniel Hoffele

We were thinking around 640hp to the wheels

Undy

A lot of duration, not much lift?

C6 Curtis

635whp

JMB

MTIRC6Z

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.

swordsman

I have very similar spec motor
LPE built
450ci
RHS block
All Pro 285/Jesel heads
Fast 102
NW102
AR 1 7/8/Corsa
RPM 6060
RPM 3:90 diff
Motor made 705/620 crank
627/545 RW

swordsman

TT32VGT

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.

Blackonblacksls

I think the forged motors kill a bit of power compared to the stock titanium rods and cast pistons

Daniel Hoffele

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]

MTIRC6Z

That's cool, same LSA as my 240/250 .620 cam...so you have 27 degrees of overlap compared to my 17. If the tune is good the surging shouldn't be horrendous. I was thinking your cam might have the LSA at something like 110 which likely would have made the surging bad given how much duration you have as well.

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.

swordsman

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.

swordsman

Forgot to mention a huge thanks to Lingenfelter for the build and Richard and company at WCCH for the heads!!!!!!!!!!

MTIRC6Z

I'm curious, did you notice any improvement in traction when going from PS2 to PSS tires? I did that on my 750 rwhp CTS-V and thought the difference was significant but so far haven't done the same on my 600 rwhp C6Z because the PS2s ain't worn out yet. Given there's a 1220+ lbs difference between my cars I wasn't sure if a change in tires would provide the same result.

Cheers, Paul.

lane_change

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.

Unreal

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.

venomws7

+1 I was about to say fast intake will always kill the big ci setups specially after 6k

Best of luck man and keep us posted gonna be a monster either way I say 630rwhp 565rwtq

SlickShoes

Optimistic dyno.


What does the car trap?