Building 396 lt1

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Jan 11, 2018 | 06:38 PM

Lsp Przy

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Staging Lane

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Building 396 lt1

This so far the build

3.875 crank forged
6.0 h beam forged forged
-34 pistons

Stock heads so far

Anyone know the what compression will be

Jan 11, 2018 | 08:49 PM

SS RRR

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From: Jackstandican

can’t know without cc of your combustion chambers, head gasket thickness and deck height.

Jan 11, 2018 | 11:33 PM

Lsp Przy

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Well

The deck height very little is being taken. More say just even it up make it even and flat.. the heads should be 54.5 whatever stocks heads. The gasket I want keep this car around 8.8 to 9.0 as it will be running 16 pounds of boost

Sto I remember what deck height will be I know it will be hard to say

Jan 12, 2018 | 11:22 AM

SS RRR

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From: Jackstandican

According to this calculator with a stock deck height you'd be right around 9:1 with a .040 head gasket:

http://www.wallaceracing.com/cr_test2.php

Jan 12, 2018 | 11:36 AM

Lsp Przy

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Staging Lane

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Would Happen to know what vavle size I should go with for optima power

Jan 12, 2018 | 12:21 PM

SS RRR

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From: Jackstandican

Nnnnnnnnnnnope. I've never done a FI engine. Two blokes that have are Blackbirdws6 and ShownoMercy who are sometimes on this forum.

Jan 12, 2018 | 12:30 PM

Lsp Przy

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Staging Lane

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9.1 still little high maybe cometic has 50 inch gasket I want 8.8

The valves I. Running titiaum intake and stainless exhaust I just need to know what size I should buy to get all power possible

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Jan 12, 2018 | 01:36 PM

moehorsepower

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9.1 isnt high, I run 9.4.1 with LT4 heads and at 12lbs of boost my motor makes 806HP...

Jan 12, 2018 | 01:57 PM

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Lsp Przy

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The piston I got are rated at 20 pounds they are diamond blow through pistons i got them gapped at 16 that's the reason why I want it little lower then 9.0 just for peace of mind plus it's going be street /strip car still running intercooled and stage 2 snow system oil cooler. Rated at 650 HP 160 pound injectors

I just need to know a good vavle size to go with
My t56 will probably blow up. But will worry about that when it does
500+ fuel pump

Also what what supercharger crank dampener I called ATI
they werent sure if it works with vortec super charger

Jan 12, 2018 | 03:40 PM

#11

SS RRR

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From: Jackstandican

Quote:

Originally Posted by Lsp Przy

What your motor putting out

Heads/cam 396. Nothing special.

Quote:

Originally Posted by Lsp Przy

9.1 still little high maybe cometic has 50 inch gasket I want 8.8

Keep your quench as tight as possible. If you are wanting less CR then use a different piston or get the chambers worked over.

Quote:

Originally Posted by moehorsepower

9.1 isnt high, I run 9.4.1 with LT4 heads and at 12lbs of boost my motor makes 806HP...

And yeah, this ******' guy knows some ****.

Jan 12, 2018 | 05:26 PM

#12

Lsp Przy

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Yea I'm talking to Loyd on his trick flow heads ported for stroker blower app let him do the cam too

I have 1.7 rockers scropion hopefully Loyd can put the heads and bigger vavles where I like it

Jan 13, 2018 | 01:59 AM

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KW Baraka

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Quote:

Originally Posted by Lsp Przy

..........I want keep this car around 8.8 to 9.0 as it will be running 16 pounds of boost..........

With that much boost, I would do a 383ci (maybe even a 355) before going with a 396ci.

But that's just me.

Jan 13, 2018 | 04:50 PM

#14

Purple Poncho

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I had a budget cast boosted 383 that went 137+mph in the 1/4 at 3850lb with stock (cleaned casting flash) heads with stock sized Manley valves. I was told a good 5 angle valve job was as important as valve size.
I'd just let Loyd decide. He is a master.