71 Chevelle+LY6+T56,
#461
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New cam for boost. Exhaust vs intake lobes.
![Name: 8EC7D3DE-F043-4DD3-AA0E-84EE1273C3E0_zpsfm1ewgln.jpg
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Pulling the old cam, found some wear on two lobes that made me think I had bad lifters, so that snowballed into new CNC ZR1 Ls9 heads, ls9 gaskets and studs
![Name: 26A2C091-2A34-447F-9254-769628C5AD8C_zpsaqqhwmla.jpg
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Only 16k miles on this cam
![Name: 5F321639-6F1A-44CD-8979-DBA193A407AC_zpsgjhgii3z.jpg
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New cam
![Name: 86D8727E-48E2-4728-A077-EF2344CD2EE9_zpsgfbbqphn.jpg
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2.5 bar ZR1 map sensor
![Name: DD64A069-A500-43E1-88A5-27482795F2BE_zps2pqb9cca.jpg
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Exhaust port work
![Name: 17CA303C-6E39-4400-AD01-7F1D07049089_zpsgg8iuxpw.jpg
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Intake port work
![Name: BFE1997B-8B52-4C68-9644-C0163AE064D5_zpswe4wny0r.jpg
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6061-t6 casting made using the 'rotocast' method
![Name: 68779836-C35B-490D-B828-8BBAB3A59902_zpsv4rsn8tu.jpg
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Titanium intake valves and inconel 'high heat' exhaust valves were added
![Name: 8EC7D3DE-F043-4DD3-AA0E-84EE1273C3E0_zpsfm1ewgln.jpg
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Size: 137.1 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648767d1501487527-71-chevelle-ly6-t56-8ec7d3de-f043-4dd3-aa0e-84ee1273c3e0_zpsfm1ewgln.jpg)
Pulling the old cam, found some wear on two lobes that made me think I had bad lifters, so that snowballed into new CNC ZR1 Ls9 heads, ls9 gaskets and studs
![Name: 26A2C091-2A34-447F-9254-769628C5AD8C_zpsaqqhwmla.jpg
Views: 313
Size: 245.6 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648768d1501487527-71-chevelle-ly6-t56-26a2c091-2a34-447f-9254-769628c5ad8c_zpsaqqhwmla.jpg)
Only 16k miles on this cam
![Name: 5F321639-6F1A-44CD-8979-DBA193A407AC_zpsgjhgii3z.jpg
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New cam
![Name: 86D8727E-48E2-4728-A077-EF2344CD2EE9_zpsgfbbqphn.jpg
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Size: 158.8 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648770d1501487527-71-chevelle-ly6-t56-86d8727e-48e2-4728-a077-ef2344cd2ee9_zpsgfbbqphn.jpg)
2.5 bar ZR1 map sensor
![Name: DD64A069-A500-43E1-88A5-27482795F2BE_zps2pqb9cca.jpg
Views: 288
Size: 176.7 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648771d1501487527-71-chevelle-ly6-t56-dd64a069-a500-43e1-88a5-27482795f2be_zps2pqb9cca.jpg)
Exhaust port work
![Name: 17CA303C-6E39-4400-AD01-7F1D07049089_zpsgg8iuxpw.jpg
Views: 354
Size: 280.0 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648772d1501487527-71-chevelle-ly6-t56-17ca303c-6e39-4400-ad01-7f1d07049089_zpsgg8iuxpw.jpg)
Intake port work
![Name: BFE1997B-8B52-4C68-9644-C0163AE064D5_zpswe4wny0r.jpg
Views: 304
Size: 91.0 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648773d1501487527-71-chevelle-ly6-t56-bfe1997b-8b52-4c68-9644-c0163ae064d5_zpswe4wny0r.jpg)
6061-t6 casting made using the 'rotocast' method
![Name: 68779836-C35B-490D-B828-8BBAB3A59902_zpsv4rsn8tu.jpg
Views: 273
Size: 260.8 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648774d1501487527-71-chevelle-ly6-t56-68779836-c35b-490d-b828-8bbab3a59902_zpsv4rsn8tu.jpg)
Titanium intake valves and inconel 'high heat' exhaust valves were added
![Name: E3F9DF5D-9478-458E-9286-2FB75747FA9F_zps6olfryoq.jpg
Views: 291
Size: 177.6 KB](https://ls1tech.com/forums/attachments/conversions-swaps/648775d1501487527-71-chevelle-ly6-t56-e3f9df5d-9478-458e-9286-2fb75747fa9f_zps6olfryoq.jpg)
#467
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WHo cnc;d the heads? They don't come that way do they?
What cam did you go with? Any chance of posting the dyno sheet? Those #s sound great IMO...
Keep up the great work.
What cam did you go with? Any chance of posting the dyno sheet? Those #s sound great IMO...
Keep up the great work.
#468
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My god... What the heck happened? I went a couple months not paying attention to the site and now your car has gone from an ls swapped primered chevelle to a show winning, track winning, street winning monster. I'm jealous! I now frown when I look at my car. Great job though!
#469
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looks so bad$$ man great job love the car! an the build great much love
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#472
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Any comments about the questions?
I've been constantly checking this thread
to see when you might chime back in and answer all the questions everybody have.
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
#473
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Any comments about the questions?
I've been constantly checking this thread
to see when you might chime back in and answer all the questions everybody have.
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
#474
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The heads are Ls9 rotocast material that I started having cleaned up here locally. They are really Silmilar to Lingenfelter Ls9 heads. I may build a few more sets, I'm working on some now for my wife's 70' and may start selling them if there's interest. The cam is 227/248 17+6 111CL .598/.595 (more road race VS max effort) I spec'd this grind for the Chevelles Trans, weight, and for durability on autocross or big tracks. I need to upload the graph and I'll post it.
Last edited by lownfast; 12-29-2015 at 11:37 AM.
#476
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Ran the car at good guys and the 1/2 mile shoot out this fall. It kicked *** at both events. Finally getting to know the car and its limits. I had a blast at the autocross even did some donuts.. The announcer didn't approve lol. I'm looking forward to running circuit of Americas this summer at optima street car challenge.
Click the links for videos !!
![](http://i101.photobucket.com/albums/m51/lownfastsonoma/th_6F7481E8-002A-48B5-BC98-ACB4B8F52BDB_zpszv5l5sgt.jpg)
http://s101.photobucket.com/user/low...l5sgt.mp4.html
![](http://i101.photobucket.com/albums/m51/lownfastsonoma/th_F9C0D773-FDA8-4EE5-BF4D-C32FF9CD437E_zpsguuveeip.jpg)
http://s101.photobucket.com/user/low...veeip.mp4.html
![](http://i101.photobucket.com/albums/m51/lownfastsonoma/th_6697DFE0-3C75-4426-9550-83C4D86E913B_zpskikaugul.jpg)
http://s101.photobucket.com/user/low...augul.mp4.html
Click the links for videos !!
![](http://i101.photobucket.com/albums/m51/lownfastsonoma/th_6F7481E8-002A-48B5-BC98-ACB4B8F52BDB_zpszv5l5sgt.jpg)
http://s101.photobucket.com/user/low...l5sgt.mp4.html
![](http://i101.photobucket.com/albums/m51/lownfastsonoma/th_F9C0D773-FDA8-4EE5-BF4D-C32FF9CD437E_zpsguuveeip.jpg)
http://s101.photobucket.com/user/low...veeip.mp4.html
![](http://i101.photobucket.com/albums/m51/lownfastsonoma/th_6697DFE0-3C75-4426-9550-83C4D86E913B_zpskikaugul.jpg)
http://s101.photobucket.com/user/low...augul.mp4.html
Last edited by lownfast; 12-29-2015 at 11:57 AM.
#478
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And some fubar from all the fun.. The smaller dorman pulley I used for the steering pump to clear the box exploded and took out the glass radiator hose and damaged some paint under the hood. I may or may not have under full boost on the highway
that turned into a roadside party waiting on a trailer.. Reminded me of power tour.. It's a party no matter what.
![Name: D9FE9009-3EDA-45BC-AB07-9919AFE5AD8A_zps68szknrv.jpg
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My wife jinxed us with the roadkill shirt..
![Name: C9952FDD-7EC3-4FF3-9FE5-AD62358E80EC_zpscvumszeo.jpg
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It took some time but I have a steel pulley solution!
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
![Name: D9FE9009-3EDA-45BC-AB07-9919AFE5AD8A_zps68szknrv.jpg
Views: 291
Size: 122.9 KB](https://ls1tech.com/forums/attachments/conversions-swaps/640073d1501462044-71-chevelle-ly6-t56-d9fe9009-3eda-45bc-ab07-9919afe5ad8a_zps68szknrv.jpg)
![Name: 3597BA46-821F-4D6A-A374-1BC37EBC2C58_zpsplzqqvk0.jpg
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Size: 173.2 KB](https://ls1tech.com/forums/attachments/conversions-swaps/640074d1501462044-71-chevelle-ly6-t56-3597ba46-821f-4d6a-a374-1bc37ebc2c58_zpsplzqqvk0.jpg)
My wife jinxed us with the roadkill shirt..
![Name: C9952FDD-7EC3-4FF3-9FE5-AD62358E80EC_zpscvumszeo.jpg
Views: 280
Size: 143.8 KB](https://ls1tech.com/forums/attachments/conversions-swaps/640075d1501462044-71-chevelle-ly6-t56-c9952fdd-7ec3-4ff3-9fe5-ad62358e80ec_zpscvumszeo.jpg)
It took some time but I have a steel pulley solution!
![Name: 26015A93-31F5-4CE3-814B-8C24F3CA4A77_zpssebx2z32.jpg
Views: 288
Size: 112.9 KB](https://ls1tech.com/forums/attachments/conversions-swaps/640076d1501462044-71-chevelle-ly6-t56-26015a93-31f5-4ce3-814b-8c24f3ca4a77_zpssebx2z32.jpg)
Last edited by lownfast; 12-27-2015 at 10:08 PM.