View Poll Results: Best heads for street/cruising stock 346?

02+ stock LS6 heads

19.05%

Stock LQ9 317 heads

28.57%

Patriot LQ9 stage 2 heads

52.38%

Voters: 84. You may not vote on this poll

Heads poll for D1SC and stock 346

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Feb 6, 2008 | 01:04 PM

#21

Z06PSI

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From: Thomson, GA

Quote:

Originally Posted by SSilverSSurfer

what do you consider a ton of power?

If is has 2000lb of torque......

Feb 6, 2008 | 05:49 PM

#22

red_ryderSS

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From: San Jose, Ca

What about afr 205s, would those be efficient. Just wondering cause I plan on going D1sc.

Apr 5, 2008 | 07:23 AM

#23

Urban Legend

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I kept my stock heads but I upgraded my springs and pushrods. Still puts out over 500 rwhp on a stock bottom end.

Apr 5, 2008 | 03:03 PM

#24

BlackNiteWS6

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From: s. jersey

Quote:

Originally Posted by Slowhawk

I voted the LS6 heads. Figured those heads with a decent Cam like low to mid 220's would give the most average power for street driving.The higher comp. really wakes up throttle response and low end. Yes,it's plenty safe for pump gas if the tune is right.

Yeah it wakes up the car but with a high duration cam and the increased compression of LS6 heads, you're already creating too much compression.
He's only using it for street duty. For a killer street setup look at TR's blower cam with LQ9 heads, either ported or stock castings. You'll still have a great street car and less stress on the pistons. It's not always about max power, on street blower setups smaller cams, and a small drop in compression from the LQ9's is more power than you think, and tuning doesn't have anything to do with the compression issues. Unless you're gonna run it way fat rich or no timing. With the LQ9's you got more room to run whatever cam within reason ,and still run a bit more timing which will retain your low end torque as well.
But Urban Legend has a point. The stock 241's flow almost 240 cfm with a small runner and 10.1 compression a nice blower cam it great for low worry street setups...Good luck with everything.

Last edited by BlackNiteWS6; Apr 5, 2008 at 03:38 PM.

May 9, 2008 | 04:54 PM

#25

bigblock4-speed

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From: Columbus, OH

I just kept stock heads and intake and bottom end, besides a cam, and springs and pushrods- i have a 7.9 pound D1SC and it put down on a mustang dyno 543rwhp and 650 at the crank..

May 10, 2008 | 01:45 PM

#26

NemesisC5

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From: Texas

Quote:

Originally Posted by Slowhawk

I agree with Slowhawk

Quote:

Originally Posted by red_ryderSS

What about afr 205s, would those be efficient. Just wondering cause I plan on going D1sc.

AFR 205's are a more expensive option but they are excellent performers. I run them with mild cam & relatively low boost and get very respectable #'s

May 10, 2008 | 03:49 PM

#27

badass99ss

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From: Wenatchee WA

My vote go's to the Patriot stII LQ9 heads. I have them and have got good power with just a baby p-1. A good quality budget head in my opinion, and Bob recommended them

Troy

May 11, 2008 | 11:34 AM

#28

BLNLS1/RX7

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From: Fishers,IN.

None of the above.Go T.E.A. stage 2 heads to make crazy power with your ProCharger.

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May 11, 2008 | 12:32 PM

#29

nvmy2000ss

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From: Brentwood CA

If you dont have the money for patriots the stock ones with springs will do for you. Obviously you will make more with some ported ones though.

May 12, 2008 | 07:32 AM

#30

blacksi

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From: East of Atlanta, GA

Quote:

Originally Posted by Mr.MartyStone

Incorrect. The head gasket needs to clear the cylinder bore, not the head. So you could still use a 3.930" head gasket.

Marty

Quote:

Originally Posted by Keith

I found a post of someone who was using the small gasket on the Lq9 heads and it was leaking. He switched to the 4" gasket and it stopped.

Just going off of what I read on here.

I hope Marty is wrong, I did the stage 2's on my 347 with 4" gaskets. I haven't started it yet to find out.

Sep 8, 2008 | 06:43 PM

#31

'Trust'

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From: Eternity

Quote:

Originally Posted by red_ryderSS

What about afr 205s, would those be efficient. Just wondering cause I plan on going D1sc.

Those are what I have. Making 653 RWHP @85* temps through a triple disc auto and running out of fuel at 5300 RPMs. It should make some serious power when my driver box/injectors arrive.

Sep 19, 2008 | 11:39 PM

#32

BlackNiteWS6

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From: s. jersey

^^thats great that the AFR's even make awesome power on FI setups too

Sep 22, 2008 | 05:45 PM

#33

LilJayV10

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From: Evansville,IN

Quote:

Originally Posted by NemesisC5

I agree with Slowhawk

AFR 205's are a more expensive option but they are excellent performers. I run them with mild cam & relatively low boost and get very respectable #'s

Holy crap man. That's some serious power. Any track times?

Sep 23, 2008 | 09:30 AM

#34

Mr.Big

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WCCH 317's here, I know my stock LS2 has 18 more cubes, but they work great for me... 761rwhp with a tiny P1SC speaks for itself...

Sep 23, 2008 | 01:29 PM

#35

03blackZ06

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From: tampa, fl

LS6 Z06 heads. I have 644rwhp on my stock heads with my d1sc , cam springs and exhaust. save money for a bottom end just my .02

Dec 5, 2008 | 07:28 AM

#36

Floader

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From: Vermont

Quote:

Originally Posted by Slowhawk

+1... dont give up the compression.... I dont see the point in changing the heads on a stock bottom end anyways, the blower and a cam will make more than enough power to destroy the stock rods and pistons.

I can thank Slowhawk for making 566rwhp out of a stock 98 longblock.... never even had the heads off the car

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