LQ4/LQ9 quick q's
LQ4/LQ9 quick q's Did some searchin adn found this thread
https://ls1tech.com/forums/showthrea...52#post2959352
I was wonderin if the final numbers were determined to be correct? I am ordering a set of these heads tomorrow and i wanted to know how much the CR is gonan drop. Will it be the .5 CR drop that was posted in the end of the fore mentioned thread?
Im gonan be using the MLS gasket. Do i get a 6.0 gasket or a regular MLS for the LS1?
Do you think at the same boost level that i will lose or gain power with these heads? I know they drop the CR a bit but they also have alot better flow then the stockers right?
This is a hypothetical question, I got my stock engine with the LQ4 heads adn the MLS gasket. Dropped the CR to 9.5-1. How much easier is it on the engine is the CR drop? I see alot of people do this to drop the CR and get better flow but how much does it really help?
Lastly im gonna get ARP fastners with the heads, is there a reason i shoudl get hte studs over the bolts? They are double the price adn i really dont see the need. If there is please tell me so that i dont F this up. I will still get ARP fastners even if i dont get the studs ill jstu get the bolts.
Thanks for all teh help guys.
John
https://ls1tech.com/forums/showthrea...52#post2959352
I was wonderin if the final numbers were determined to be correct? I am ordering a set of these heads tomorrow and i wanted to know how much the CR is gonan drop. Will it be the .5 CR drop that was posted in the end of the fore mentioned thread?
Im gonan be using the MLS gasket. Do i get a 6.0 gasket or a regular MLS for the LS1?
Do you think at the same boost level that i will lose or gain power with these heads? I know they drop the CR a bit but they also have alot better flow then the stockers right?
This is a hypothetical question, I got my stock engine with the LQ4 heads adn the MLS gasket. Dropped the CR to 9.5-1. How much easier is it on the engine is the CR drop? I see alot of people do this to drop the CR and get better flow but how much does it really help?
Lastly im gonna get ARP fastners with the heads, is there a reason i shoudl get hte studs over the bolts? They are double the price adn i really dont see the need. If there is please tell me so that i dont F this up. I will still get ARP fastners even if i dont get the studs ill jstu get the bolts.
Thanks for all teh help guys.
John
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
http://www.c5frc.com/calculators/Com...Calculator.htm
I get about 9.4 SCR with 71cc head and .060 gasket on a 346 cid
I get about 9.4 SCR with 71cc head and .060 gasket on a 346 cid
Anyone else hav a chance to tell me how useful this mod is needed with a sotck engine? Im basically trying to convince my self one way or the otehr on these. Thanks for the help!
John
John
