Head Questions
07-03-2002, 08:18 AM
#1
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Head Questions A frined of mine is trying to decide what to do with his heads, he has to replace one due to a crack, so he got some new ones, and wants to know where to go.
He wants to just do a basic, local (keywords) port job only, as he can't swing the cam now. I advised him not to expect to really see a notcable gain (5-10whp?)with a simple head only deal, and advised maybe to go with the TEA CNC $600 deal.
He has the JBA shorties with the factory Y (very restrictive I say) Any cars over 350whp breathing thru this set-up?
Where can I gat some comparative flow #s for a stock LS1 head vs an LS6 vs a basic stage I head (don't turn this into a tunder vs tunder issue <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> )
Also, where can I get info on cam theories, especially pertaining to the LS1?! I know theories on this are changing daily, and I advised him to visit Thunder's website (he's also an M6 and they are seeing sick #s with M6, stock headed cars)
I told him this is the place for true tech questions, so please don't let me down <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
He wants to just do a basic, local (keywords) port job only, as he can't swing the cam now. I advised him not to expect to really see a notcable gain (5-10whp?)with a simple head only deal, and advised maybe to go with the TEA CNC $600 deal.
He has the JBA shorties with the factory Y (very restrictive I say) Any cars over 350whp breathing thru this set-up?
Where can I gat some comparative flow #s for a stock LS1 head vs an LS6 vs a basic stage I head (don't turn this into a tunder vs tunder issue <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> )
Also, where can I get info on cam theories, especially pertaining to the LS1?! I know theories on this are changing daily, and I advised him to visit Thunder's website (he's also an M6 and they are seeing sick #s with M6, stock headed cars)
I told him this is the place for true tech questions, so please don't let me down <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
07-05-2002, 08:13 AM
#2
Re: Head Questions Unless the porter knows what they are doing and has worked with LS1's before, the porter may do more harm than good.
If I were him, maybe do the TEA CNC for $600. With just heads he should see 20+ rwhp gain depending on the other mods.
As to the stock Y pipe, have the muffler shop cut out the flat section and weld in replacement, much cheaper than buying a aftermarket Y pipe.
Shorties won't give the gains long tubes do. Most find shorties pretty worthless on 01 and up cars. Shorties can be worth 5-8rwhp on 98-00 cars. Not much gain for the hassle. Save up and get long tubes or MAC's if you can.
Also read the board it's the best place to learn info.
Good Luck
If I were him, maybe do the TEA CNC for $600. With just heads he should see 20+ rwhp gain depending on the other mods.
As to the stock Y pipe, have the muffler shop cut out the flat section and weld in replacement, much cheaper than buying a aftermarket Y pipe.
Shorties won't give the gains long tubes do. Most find shorties pretty worthless on 01 and up cars. Shorties can be worth 5-8rwhp on 98-00 cars. Not much gain for the hassle. Save up and get long tubes or MAC's if you can.
Also read the board it's the best place to learn info.
Good Luck