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Any 400+ ci NA E85 Hi Comp Builds?

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Old 10-28-2020, 06:13 PM
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Originally Posted by Austinma62
Looking for any info or links for builds of 400+ cubic inch naturally aspirated, E85, 13 to 1+ high compression builds, possibly using nitrous too. Just wondering if anyone out there is running anything like this. Curious to see if so! The search feature didn't bring up much. Thanks!
408 300 shot 5.6s at 3300 lbs.
550 whp.
62cc prc cathedral heads. All kinda budget stuff. 6.0 block. Off the shelf assembly. 260/270 hydraulic cam. 14.1

fyi dont buy weisco pistons if going e. The coating on the piston flakes off and plugs the pickup tube. Call weisco for coating choices.
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Old 10-28-2020, 06:18 PM
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Originally Posted by Fishmasterdan
408 300 shot 5.6s at 3300 lbs.
550 whp.
62cc prc cathedral heads. All kinda budget stuff. 6.0 block. Off the shelf assembly. 260/270 hydraulic cam. 14.1

fyi dont buy weisco pistons if going e. The coating on the piston flakes off and plugs the pickup tube. Call weisco for coating choices.

Dang sounds rowdy, any videos of that 14.1 408? Has to sound good and probably pretty responsive. How’s its manners on the street?
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Old 10-28-2020, 07:23 PM
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I do have some videos I can send you privately.
it's not very street friendly. Has 5500 stall and doesn't run very well till about 3k rpm. Lol. I do love driving it around on the street, but would not drive very far. Tranny gets warm with the big stall.


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Old 10-28-2020, 07:39 PM
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Originally Posted by Fishmasterdan
I do have some videos I can send you privately.
it's not very street friendly. Has 5500 stall and doesn't run very well till about 3k rpm. Lol. I do love driving it around on the street, but would not drive very far. Tranny gets warm with the big stall.

Yeah that’s a big can for a 408 and on the street, with that much compression does it run hot at all? I bet it’s fun on the street still.
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Old 10-28-2020, 09:39 PM
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455, 12.75:1 ls3 heads ect.

https://ls1tech.com/forums/single-di...166-9-s-n.html
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Old 10-28-2020, 09:53 PM
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I’m building a 418CI 15+ CR with Solid roller and 11* LS3 heads. Cam is a 277-288@.050 .800-.775 lift. Wanting to take it to LME to see what it will do. Shooting for 2HP per CI.
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Old 01-23-2021, 03:42 AM
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Originally Posted by Austinma62
Looking for any info or links for builds of 400+ cubic inch naturally aspirated, E85, 13 to 1+ high compression builds, possibly using nitrous too. Just wondering if anyone out there is running anything like this. Curious to see if so! The search feature didn't bring up much. Thanks!
just completed a 434ci ls3 iron block 803 hp 623 ftlbs of torque on engine dyno hydraulic cam, cid intake still a couple more ponies to chase once in the car
Last edited by Svls3; 01-23-2021 at 03:49 AM.
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Old 01-24-2021, 12:47 PM
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Hell yeah dude let's hear some details!
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Old 01-31-2021, 02:55 AM
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Originally Posted by spanks13
Hell yeah dude let's hear some details!
hydraulic cam 250ish/260ish Brodix br7 heads Higgins port matched manifold single plane,
texas speed roller rockers comp is about 13-1
on race fuel with vac pump on 434ls3 iron block cp pistons comp star crank and rods
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Old 01-31-2021, 03:01 AM
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Originally Posted by Svls3
hydraulic cam 250ish/260ish Brodix br7 heads Higgins port matched manifold single plane,
texas speed roller rockers comp is about 13-1
on race fuel with vac pump on 434ls3 iron block cp pistons comp star crank and rods

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Old 01-31-2021, 03:08 AM
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Stop calling it an LS3. An LS3 is an aluminum block.
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Old 01-31-2021, 10:03 AM
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Originally Posted by Sacrilege
Stop calling it an LS3. An LS3 is an aluminum block.
Right! Bored out LQ4... or Gen IV equivalent...
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Old 01-31-2021, 12:11 PM
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Originally Posted by Sacrilege
Stop calling it an LS3. An LS3 is an aluminum block.
“ls3 based” , ls3 design, ls3 copy with upgrades same **** different smell
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Old 02-05-2021, 10:18 AM
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Originally Posted by Svls3
“ls3 based” , ls3 design, ls3 copy with upgrades same **** different smell

Google Ls3 iron Block?

It's a 6.0 that's Bore to a LS3. So there is No iron block Ls3. Besides that name a LS iron Block non Lsx that comes with a bore size of .060 from the factory?

Hello.
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Old 02-05-2021, 01:44 PM
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If something is custom built and has LS3 heads 99% of the time people are going to call it an LS3 lol.
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Old 02-05-2021, 08:17 PM
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Originally Posted by spanks13
If something is custom built and has LS3 heads 99% of the time people are going to call it an LS3 lol.😇
🤣😂
Ok I'll run with it.... 😂
I've got a Iron Block Ls7 🤣😂
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