Lq9 head option question
#1
Lq9 head option question
Hey all I have been researching on the LQ9s as I am replacing the LS1 that has knocking in my RX7. I have located an LQ9 from a 04 Escalade and it has about 100K miles on it. I found another one out of a 05 Escalade and that has around 127K miles on it. Should I go with the lower miles (Is there any significant difference between the 04 to 05?).
The pull out will have the 317 heads on it and I was wondering if I should swap it out with 799(243) heads? Or should I just keep the 317 heads and machine it at a shop? If I get the 799 heads I am planning on machining them too. Is there any spec I have to keep in mind when I am having them machined since I want a car that I can daily drive in the streets? I will be swap the cam from my LS1 to the LQ9. Here are the specs for it: 230/234 .600/.602 111 LSA.
I will also swap out the LS6 intake from my LS1 and hope I cross the 400 WHP level current setup makes around 378 HP.
The pull out will have the 317 heads on it and I was wondering if I should swap it out with 799(243) heads? Or should I just keep the 317 heads and machine it at a shop? If I get the 799 heads I am planning on machining them too. Is there any spec I have to keep in mind when I am having them machined since I want a car that I can daily drive in the streets? I will be swap the cam from my LS1 to the LQ9. Here are the specs for it: 230/234 .600/.602 111 LSA.
I will also swap out the LS6 intake from my LS1 and hope I cross the 400 WHP level current setup makes around 378 HP.
#3
TECH Senior Member
You realize you are putting a lot more weight on the front of your car going from an aluminum block to an iron one? You WILL notice the difference in handling.
#4
Yes I know the LQ9 is considerably heavier about 80 pounds more. But getting a replacement LS1 is expensive. I looked at other forums and people who have switched to LQs said they have not felt a huge amount of difference in the handling.
#6