RHS 450cid with AllPro Heads - 2days to Install
12-30-2012, 05:52 PM
#1
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RHS 450cid with AllPro Heads - 2days to Install Special thanks to Chad at Golen Racing Engines for all of your detail work and extra time spent on the dyno testing several cam grinds. Also want to thank Richard over at West Coast Cylinder Heads for taking the time to review the dyno numbers for each of the four cams tested. This really helped me in the final cam selection and I am pretty sure this cam choice will meet my needs - mainly shaking the fillings out of my teeth at idle.
Once engine is installed and tuned - Idle video will follow along with Chassis Dyno Results - goal is 600hp to the tire.
RHS Block 450CID
• Callies Dragon Slayer 4.165" x 4.125"
• Callies HD I-Beam Rods
• Diamond Pistons 11.5:1 with lateral gas ports, ceramic top & moly skirts
• All Pro Heads - 12degree, 277cc, titanium 2.25" in, stainless 1.615" ex, Manley 1.350" dual w/Viton valve seals, CHE Precision rockers
• Comp Cam LSR 247in, 263ex, 107lsa 660"
• Comp Retro-Fit Link Bar
• FAST LSXR 102
• Nick Williams 102 - black anodized
• ATI Super 10% Underdrive
• 17/8” Kooks w/ 3” center
Dyno Video
https://www.youtube.com/watch?v=YB2m...ature=youtu.be
Results
680hp at 6,550rpm
602tq at 5,600rpm
Exhaust
3” Axle Back B&B C5 Fusion exhaust - a few pictures comparing my old Corsa Indy to the new B&B
Drivetrain
• RPS LSX BC2 Twin Disk Carbon
• MGW Shifter
• RPM TR6060 Level VI conversion
• RPM C6 Z06 Stage 4 conversion
Fluids
Valvoline 75W90 - rear end
Royal Purple Syncromax - transmission
Royal Purple XPR 5W30 - engine
Once engine is installed and tuned - Idle video will follow along with Chassis Dyno Results - goal is 600hp to the tire.
RHS Block 450CID
• Callies Dragon Slayer 4.165" x 4.125"
• Callies HD I-Beam Rods
• Diamond Pistons 11.5:1 with lateral gas ports, ceramic top & moly skirts
• All Pro Heads - 12degree, 277cc, titanium 2.25" in, stainless 1.615" ex, Manley 1.350" dual w/Viton valve seals, CHE Precision rockers
• Comp Cam LSR 247in, 263ex, 107lsa 660"
• Comp Retro-Fit Link Bar
• FAST LSXR 102
• Nick Williams 102 - black anodized
• ATI Super 10% Underdrive
• 17/8” Kooks w/ 3” center
Dyno Video
https://www.youtube.com/watch?v=YB2m...ature=youtu.be
Results
680hp at 6,550rpm
602tq at 5,600rpm
Exhaust
3” Axle Back B&B C5 Fusion exhaust - a few pictures comparing my old Corsa Indy to the new B&B
Drivetrain
• RPS LSX BC2 Twin Disk Carbon
• MGW Shifter
• RPM TR6060 Level VI conversion
• RPM C6 Z06 Stage 4 conversion
Fluids
Valvoline 75W90 - rear end
Royal Purple Syncromax - transmission
Royal Purple XPR 5W30 - engine
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12-30-2012, 09:53 PM
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The first cam tested was the 'big' cam and it made 711hp, however, the torque curve was not what we looking for. We experimented with a wide range of cams with lsa's that varied from 112 to 107 degrees. It was cool to see the power differences. The final cam choice was a result of Richard at West Coast Cylinder Heads and Chad at Golen Racing Engines matching the heads and air flow to my specific requirements.
Last edited by TheCapo; 12-30-2012 at 09:58 PM.
12-31-2012, 09:25 AM
#11
TECH Fanatic
Amazing! I love all the pictures.
I see you are also using non-roller rockers with bronze valve guides, have you ever had wear issues with this before? I'm doing the same thing, but less peak lift than you have.
I see you are also using non-roller rockers with bronze valve guides, have you ever had wear issues with this before? I'm doing the same thing, but less peak lift than you have.
12-31-2012, 08:02 PM
#13
The first cam tested was the 'big' cam and it made 711hp, however, the torque curve was not what we looking for. We experimented with a wide range of cams with lsa's that varied from 112 to 107 degrees. It was cool to see the power differences. The final cam choice was a result of Richard at West Coast Cylinder Heads and Chad at Golen Racing Engines matching the heads and air flow to my specific requirements.
12-31-2012, 08:29 PM
#14
The first cam tested was the 'big' cam and it made 711hp, however, the torque curve was not what we looking for. We experimented with a wide range of cams with lsa's that varied from 112 to 107 degrees. It was cool to see the power differences. The final cam choice was a result of Richard at West Coast Cylinder Heads and Chad at Golen Racing Engines matching the heads and air flow to my specific requirements.
01-01-2013, 12:34 AM
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To make 800hp you need at least 13:1 pistons with E85 and a sheet metal intake with Jesel roller rockers spinning at 8500rpm. Great for the track but the no good for the street. It also costs $3K to $5K more for a sheet metal intake plus another $2K for solid roller cam with Jesel rockers. Now you go from $27K to $34K. If you want 700hp to 800hp for $20k your gonna have to cheat with an FI setup.
01-01-2013, 11:54 AM
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255/271 .660/.660 on a 112LSA
247/263 .660/.660 on a 109LSA
247/263 .660/.660 on a 107LSA
239/255 .660/.660 on a 108LSA
Richard at WCCH says these large cube LS engines are very happy with a 105 to 107LSA. That being said, most drivers will likely not be so happy with the drivablility and rough idle that comes with a narrow LSA. The narrow LSA allows a larger duration cam while maintaining good torque at lower rpm and throughout the rpm range. The cam testing we did certainly supports that. The tight LSA provides a really rough idle and unique race car sound at wot which was one of my goals.
Last edited by TheCapo; 01-01-2013 at 12:23 PM.
01-01-2013, 01:57 PM
#20
Personally out of those choices I'd run the 255/271 112lsa and you even said it made the most power. I'd actually put it on a 114 or 115lsa even. If I can get a graph of another 454 with tfs245s I'll post it up later for comparison. Very nice build though!