400 E Block lunati 60803 cam

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Old Jan 26, 2023 | 10:00 AM
  #1  
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400 E Block lunati 60803 cam

Short idle video of a 67 400 E block build I did last spring.

Old Jan 26, 2023 | 10:40 AM
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What's the compression ratio on that engine?
Old Jan 26, 2023 | 10:56 AM
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It's got flat tops in it and compression is 10.1.
Old Jan 26, 2023 | 02:03 PM
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Is the cam on a LSA of 110 or 108?
Old Jan 26, 2023 | 04:12 PM
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Cam has a lsa of 110. Engine is very snappy and responsive.
Old Feb 21, 2023 | 09:26 AM
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Sounds awesome, what are you using for valve springs and rockers?
Old Feb 21, 2023 | 09:15 PM
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what did dial the intake lobe to ? What did the cam card say to instal intake lobe to ?
Old Feb 22, 2023 | 06:31 AM
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Valve springs we're lunati and matched to the cam. Rockers are 1.7 scorpion roller rockers.
Old Feb 22, 2023 | 10:55 AM
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So if I'm doing my math correctly, 1.7 rockers will give you 5.88% more valve lift over the listed Lunati 1.6 rocker specs. .510/.522 becomes .540/.553. Are you using cast iron heads, did you need to be concerned with the valve to piston clearance.
The reason I'm asking is I currently have a 66 400E 4spd, 3.55 gear car with B heads with roller tip rockers and the 69 W30 328/328 cam in it. I would like something now that is more street friendly but still has that sound and makes good power for cruise night.

Thanks Jim
Old Feb 23, 2023 | 04:50 AM
  #10  
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I have speedmaster heads they were cut to 76 cc and cnc ported ported by Knowlton's Thunderheads. I did not have any piston to valve interference issues. This cam pulls 11 to 12 inches of vacuum @800 rpm idle.
Old Feb 24, 2023 | 05:33 PM
  #11  
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JRSL69, I would recommend the early W30/W31 (308/308) camshaft for your "E" block. It will provide adequate vacuum for power brakes, makes good power, is street friendly, sounds good, and will work with the 3.55 gear.
Old Feb 24, 2023 | 07:34 PM
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Originally Posted by 67oai
jrsl69, i would recommend the early w30/w31 (308/308) camshaft for your "e" block. It will provide adequate vacuum for power brakes, makes good power, is street friendly, sounds good, and will work with the 3.55 gear.
x 2
Old Feb 25, 2023 | 05:04 AM
  #13  
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Originally Posted by JRSL69
So if I'm doing my math correctly, 1.7 rockers will give you 5.88% more valve lift over the listed Lunati 1.6 rocker specs. .510/.522 becomes .540/.553. Are you using cast iron heads, did you need to be concerned with the valve to piston clearance.
The reason I'm asking is I currently have a 66 400E 4spd, 3.55 gear car with B heads with roller tip rockers and the 69 W30 328/328 cam in it. I would like something now that is more street friendly but still has that sound and makes good power for cruise night.

Thanks Jim
I do a previous grind from Crane. It’s 230/234@.050 with .496/.508 lift on a 110. Sounds great, very responsive and would work well in your build. Let me know if you’re interested in doing it.
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