Port LS3 heads or invest in LS7 heads? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Cmlloveless · 09-29-2010, 04:30 PM

Just trying to figure out which would be a better way to go? (cost effectiveness)

Is is worth it to invest in CNC ported LS7 heads to swap out with the LS3's? Or am I better off just porting my LS3 heads? Either set up I go with would have new valves/springs, etc...

My plan is to get a 418ci or 427ci stroker kit(maybe), blower cam and procharger.

Ovenmitt · 09-29-2010, 06:53 PM

LS7 heads wont fit on an ls3.

sspaul · 09-29-2010, 07:28 PM

Quote:

Originally Posted by Ovenmitt

LS7 heads wont fit on an ls3.

not doubting you but why won't they fit?

VADER SS L99 · 09-29-2010, 07:31 PM

Quote:

Originally Posted by sspaul

not doubting you but why won't they fit?

Bore is too small on the LS3 and valves would hit. You have 2 choices to get LS7 heads. Either go with a different block or go with ET small bore LS7 heads. Both options will be very pricey.

Cmlloveless · 09-29-2010, 07:39 PM

answers my question then doesnt it! Thanks

Jason 98 TA · 09-30-2010, 09:11 AM

There's some good options coming very soon though... We have a aftermarket casting LS3 head being finished that will move LS7 flow numbers & still retain all your LS3 hardware. We also are working on a LS7 heads with large & small bore options!

gearhead440 · 10-01-2010, 10:59 AM

Stock head flow numbers from Car Craft:

http://www.carcraft.com/techarticles...ocker_arm.html

danhr · 10-01-2010, 12:03 PM

throw the 427 stroker idea out the door... a 4.1" stroke crank is excessive

stock ls3's will flow enough, but if you feel the need to waste money, get a set of ported ls3 heads

600hp-lpe · 10-01-2010, 12:24 PM

I would wait to see what SEMA brings.. it's only a month away.

That's when new parts get announced... especially something like what you want.

J-Rod6410 · 10-01-2010, 12:52 PM

Quote:

Originally Posted by danhr

throw the 427 stroker idea out the door... a 4.1" stroke crank is excessive

stock ls3's will flow enough, but if you feel the need to waste money, get a set of ported ls3 heads

What he said

If you're going forced induction with cam, stock LS3 heads would be more than enough.

redsap05 · 10-02-2010, 09:31 PM

you would be better off to ditch the ls3 style all together and get some trick flow 235's or afr 230 heads.

danhr · 10-03-2010, 12:10 PM

Quote:

Originally Posted by redsap05

you would be better off to ditch the ls3 style all together and get some trick flow 235's or afr 230 heads.

uuhhh so you want him to spend MORE money for a set of heads that flow LESS, and would require him getting a different style intake, and either new fuel rails or an adapter kit?

explantation please

VADER SS L99 · 10-04-2010, 02:31 AM

Quote:

Originally Posted by danhr

uuhhh so you want him to spend MORE money for a set of heads that flow LESS, and would require him getting a different style intake, and either new fuel rails or an adapter kit?

explantation please

Yeah unless AFR or Trick Flow come out with a LS3 style head the cathedral port head idea would be a bad costly idea.

klatterblast · 10-04-2010, 03:24 AM

get L92 ported heads

09-29-2010, 04:30 PM	#1
Cmlloveless Drives: 2010 2SS RS Join Date: Jul 2009 Location: Winchester, Ca Posts: 957 View My Garage	Port LS3 heads or invest in LS7 heads? Just trying to figure out which would be a better way to go? (cost effectiveness) Is is worth it to invest in CNC ported LS7 heads to swap out with the LS3's? Or am I better off just porting my LS3 heads? Either set up I go with would have new valves/springs, etc... My plan is to get a 418ci or 427ci stroker kit(maybe), blower cam and procharger.

10-01-2010, 10:59 AM	#7
gearhead440 Drives: Yellow 2SS, 6 speed manual Join Date: Jan 2010 Location: Concord, NC Posts: 218	Stock head flow numbers from Car Craft: http://www.carcraft.com/techarticles...ocker_arm.html __________________ Hers & His

10-01-2010, 12:03 PM	#8
danhr BAMF SS Drives: 2016 Camaro 1SS A8 Join Date: Mar 2010 Location: Ford City, PA Posts: 3,023	throw the 427 stroker idea out the door... a 4.1" stroke crank is excessive stock ls3's will flow enough, but if you feel the need to waste money, get a set of ported ls3 heads __________________ 2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance Stock Longblock 800 SAE rwhp. 9.4 @ 145 mph.

10-04-2010, 03:24 AM	#14
klatterblast Drives: 2010 camaro 2ssrs blk. Join Date: Oct 2009 Location: walker la. Posts: 1,732 View My Garage	get L92 ported heads __________________ 2010 Hennessey HPE650 2SSRS Blk/Blk Magnuson TVS2300,ported heads,cam,Hotchkis suspension. Weld 17”s, Mickey Thompson’s.

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09-29-2010, 06:53 PM	#2
Ovenmitt Account Suspended Drives: 2011 RJT 1SS Join Date: Apr 2010 Location: Fort Lewis, Washington Posts: 730	LS7 heads wont fit on an ls3.

09-29-2010, 07:39 PM	#5
Cmlloveless Drives: 2010 2SS RS Join Date: Jul 2009 Location: Winchester, Ca Posts: 957 View My Garage	answers my question then doesnt it! Thanks

09-30-2010, 09:11 AM	#6
Jason 98 TA Drives: Camaro Join Date: Apr 2009 Location: Texas Posts: 1,669	There's some good options coming very soon though... We have a aftermarket casting LS3 head being finished that will move LS7 flow numbers & still retain all your LS3 hardware. We also are working on a LS7 heads with large & small bore options!

10-01-2010, 12:24 PM	#9
600hp-lpe Drives: 2010 Join Date: Jul 2009 Location: NH Posts: 4,788	I would wait to see what SEMA brings.. it's only a month away. That's when new parts get announced... especially something like what you want.

10-02-2010, 09:31 PM	#11
redsap05 Drives: 2005 pontiac gto Join Date: Jul 2008 Location: akron oh Posts: 174	you would be better off to ditch the ls3 style all together and get some trick flow 235's or afr 230 heads.