Best heads for lq9

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Oct 9, 2020 | 05:39 PM

#41

00pooterSS

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From: Dallas

Quote:

Originally Posted by Matt45

Sorry wasn’t thinking when I was typing lol. To the crank. Best cam to clear 600hp to the crank.

I was gonna write something, but Darth covered it all.

Once you start wanting to make power on that level, there's SO MUCH MORE to it than the cam you chose. And at that point the most limiting factor usually ends up becoming your bank account lol.

Oct 9, 2020 | 05:44 PM

#42

Bspeck82

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Quote:

Originally Posted by Jtm2085

Thats what I used on my rod/piston 6.0 and made over 500whp

you have a big cam and super vic with nitrous. Totally different than what this guys got going on

Oct 9, 2020 | 08:42 PM

#43

Tuskyz28

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From: Mississippi

Quote:

Originally Posted by Bspeck82

too much head for that combo

Something to think about as guys put LS3 260 intake runner heads on 6.0 motors ALL THE TIME.

The million dollar question to this day is... is a LS3 head too much for a 6.0 ?

Oct 9, 2020 | 10:36 PM

#44

Bspeck82

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Quote:

Originally Posted by Tuskyz28

Something to think about as guys put LS3 260 intake runner heads on 6.0 motors ALL THE TIME.

The million dollar question to this day is... is a LS3 head too much for a 6.0 ?

well valve shrouding can be a small issue but it really depends on the combo.

Oct 9, 2020 | 10:58 PM

#45

SLP IROC-Z

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From: Salem, NH

This is closing in on 600 with an unported fast 102 and stock 243 heads, its not reving north of jesus either.
https://ls1tech.com/forums/dynamomet...s-503rwhp.html

Oct 9, 2020 | 11:36 PM

#46

Bspeck82

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Quote:

Originally Posted by SLP IROC-Z

This is closing in on 600 with an unported fast 102 and stock 243 heads, its not reving north of jesus either.
https://ls1tech.com/forums/dynamomet...s-503rwhp.html

take with a grain of salt. Dynos are meant to compare gains not bench race vs other dynos in other conditions. You could make 450 on one dyno and 500 on another. All in the differences from pull to pull. You gained nothing but ego.

Nov 15, 2021 | 08:20 AM

#47

elfgoat

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From: South Jersey

Quote:

Originally Posted by Tuskyz28

A 408 will clear 600 horse even with a ported 243 head... seen that over and over

what about a 6.0 iron block???? Is 600 HP reachable N/A??? Just checking…..

Nov 15, 2021 | 09:56 AM

#48

RichyB33

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Quote:

Originally Posted by elfgoat

what about a 6.0 iron block???? Is 600 HP reachable N/A??? Just checking…..

I assume you're talking crank HP. If so then I would say yes, 600 is doable on an iron block. For instance, my LQ9 bottom has stock LS3 heads and a pretty mild 227/236 cam. It made 442/420 through the auto and 3.15 gears. If you do the math for normal drivetrain loss and such, you can assume that the engine is somewhere in the mid 500s at the crank. I would think that if I went a little more rowdy with the cam and bumped the compression up from 10.4 to closer to 11.0 I'd be somewhere close to the 600 FWHP mark.

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Nov 15, 2021 | 10:03 AM

#49

elfgoat

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From: South Jersey

Gotcha. Over thinking everything concerning this 408 stroker build. Grabbed a cast iron 6.0 block from a junkyard and looking to get 600 N/A for now…..until I shoot for boost in the future.

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