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Old 10-21-2019, 01:24 PM   #1
WHAMMO


 
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PRC 260 PTV clearance with huge solid roller cam?

Anyone got a huge cam with PRC heads 255-260 heads?

I'd get them with 67-66 cc chambers.

I want to run a solid roller llsr like 244 / 257 with around 670 lift.

I was planning to run ported LS3 heads and flycut but I might want to not flycut so looking at custom heads and looking for 11.0-11.2:1 compression.
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13' 1LE, TSP 231-236/Tick 660/.105 PR, UDP, SW LT 2'' & HFC, stock NPP & H pipe, VR-DRX CAI, air scoop, Goertz1 manifold, 102mm BBK, 26" Toyo DRs, Forgestars R17x10 & F18x8, rear seat delete, remote Pat G tune Autocal, 7400 limiter, Spec Mini Twin. 91oct.

11.90@122.3, 0-60ft 2.0 / 11.99@123.6, 0-60ft 2.1 DA+819
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FED TFS 262cc & LLSR build ahead
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Old 10-21-2019, 02:48 PM   #2
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Mine were 65cc. Milled them .035" to get around 60cc for 12:1
I run a 243/255 hyd. and had to flycut.
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Old 10-21-2019, 03:06 PM   #3
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Quote:
Originally Posted by Bo White View Post
Mine were 65cc. Milled them .035" to get around 60cc for 12:1
I run a 243/255 hyd. and had to flycut.
Thanks
Did you flycut much?

A solid would be like 240 253 and I wouldn't mill cause I run on 91oct...

Any update on your times?
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13' 1LE, TSP 231-236/Tick 660/.105 PR, UDP, SW LT 2'' & HFC, stock NPP & H pipe, VR-DRX CAI, air scoop, Goertz1 manifold, 102mm BBK, 26" Toyo DRs, Forgestars R17x10 & F18x8, rear seat delete, remote Pat G tune Autocal, 7400 limiter, Spec Mini Twin. 91oct.

11.90@122.3, 0-60ft 2.0 / 11.99@123.6, 0-60ft 2.1 DA+819
...519RWHP SAE


FED TFS 262cc & LLSR build ahead
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Old 10-21-2019, 05:55 PM   #4
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My stock heads were 64.5 cc with Manley valves.
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Old 10-21-2019, 10:37 PM   #5
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Quote:
Originally Posted by CFD View Post
My stock heads were 64.5 cc with Manley valves.
Soo stock LS3 heads milled and what cam? Not PRC custom?

..or just a solid roller ?
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13' 1LE, TSP 231-236/Tick 660/.105 PR, UDP, SW LT 2'' & HFC, stock NPP & H pipe, VR-DRX CAI, air scoop, Goertz1 manifold, 102mm BBK, 26" Toyo DRs, Forgestars R17x10 & F18x8, rear seat delete, remote Pat G tune Autocal, 7400 limiter, Spec Mini Twin. 91oct.

11.90@122.3, 0-60ft 2.0 / 11.99@123.6, 0-60ft 2.1 DA+819
...519RWHP SAE


FED TFS 262cc & LLSR build ahead
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Old 10-21-2019, 10:44 PM   #6
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Stock LS3, not milled.
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Old 10-22-2019, 02:41 AM   #7
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I flycut the pistons .100" just because
I run pump 93 but keep timing at 24*
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Old 01-16-2020, 11:09 AM   #8
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Quote:
Originally Posted by Bo White View Post
I flycut the pistons .100" just because
I run pump 93 but keep timing at 24*
I have a question for you. What’s harder fly cutting the pistons or a full cam install on a LS3 down to the oil pump?
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Old 01-16-2020, 11:59 PM   #9
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What fly cutters are guys using?
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Old 01-17-2020, 12:33 PM   #10
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Fly cutting isnt hard just time consuming
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Old 01-19-2020, 06:41 PM   #11
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Bo care to share which cutters you used? I've looked at the isky ones and they dont appear too have proper sizes. Unless I'm looking wrong.
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Old 01-19-2020, 08:55 PM   #12
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I use cutters from Lindy Tools.
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Old 01-20-2020, 07:14 AM   #13
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I second Lindy
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Old 01-20-2020, 07:38 PM   #14
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Thanks!
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