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Old 11-13-2019, 12:24 PM   #1
weSS1LEy
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Is a 416 worth it?

Seems like so many options, varying components, varying compression ratios etc. Would like more NA power though. Kits seem cheap but labour is probably through the roof!! Opinions?
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Old 11-13-2019, 12:25 PM   #2
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I chose to build a 416 over a standard displacement LS3 for road racing purposes, the increased torque really helps our heavy cars move.
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Old 11-13-2019, 12:54 PM   #3
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I was just asking myself the same question. To make really good HP they need a larger head and a good intake.
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Old 11-13-2019, 01:06 PM   #4
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Quote:
Originally Posted by zz430camaro View Post
I was just asking myself the same question. To make really good HP they need a larger head and a good intake.
With more displacement you do need more airflow requirements, this is true. I used Katech CNC ported LS9 heads with our competition valve job setup. The next step up would be the LS7-styled cylinder heads with larger valves.

You will be good for 575-650 HP on ported LS3 heads if everything else is setup properly depending on application (assuming street intake, no hi-ram). Anything more you will need to go larger.
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Old 11-13-2019, 01:59 PM   #5
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N/A can get very expensive when all things are considered. I think that's why you see so many boosted cars these days. But if you're trying to build something for the track or something a little different a stroker set up is hard to beat. We can put a engine package together for you if you're interested.
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Old 11-13-2019, 02:37 PM   #6
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Quote:
Originally Posted by weSS1LEy View Post
Seems like so many options, varying components, varying compression ratios etc. Would like more NA power though. Kits seem cheap but labour is probably through the roof!! Opinions?
Buy an assembled, stroker (short block)….and sell your current engine to defray the costs.

Spec it for about 11.5:1 cr with stock(ish) size combustion chambers and .030" compressed head gaskets....and a cam to compliment such an engine.

Just my opinion.

KW
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Old 11-13-2019, 02:40 PM   #7
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Quote:
Originally Posted by zz430camaro View Post
I was just asking myself the same question. To make really good HP they need a larger head and a good intake.
With ported heads and ported intake, 500hp/440tq to the wheels is doable with a medium cam....and that's with stock displacement.

The question is...…."what exactly does "really good HP" mean?"

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Old 11-13-2019, 03:04 PM   #8
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Good info! Anybody have average/ballpark hp gains with a 416? Say 40hp, 50tq? Just guessing
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Old 11-13-2019, 03:08 PM   #9
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Not knocking our sponsors but did you guys see the black friday sales going on at Thompson motorsports? Dart short blocks within reach...
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Old 11-13-2019, 03:09 PM   #10
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416 all day ;o)

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Old 11-13-2019, 03:11 PM   #11
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A 416 should easily be able to hit 600+HP and around 500lbft of torque.
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Old 11-13-2019, 03:13 PM   #12
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At the flywheel?
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Old 11-13-2019, 03:18 PM   #13
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From research I have done they average is 510 to 550 rwhp with a manual. Now if you go bolt ons extreme and light flywheel it would be more. Say your average cammed camaro is 480 rwhp, that's 1.27 hp/cubic inch. So with that being the same you would be at 531 rwhp.

A good shorter runner intake, large cam and great heads you can get upper 500's I'm sure
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Old 11-13-2019, 03:36 PM   #14
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How about with the cam in my sig?
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