6.0 and ls1 heads?
04-13-2009, 05:32 PM
#1
Teching In
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: N.W FL
Posts: 33
Likes: 0
Received 0 Likes
on
0 Posts
6.0 and ls1 heads? I have a 99 lq4 with iron heads.I also have a set of ported ls1 heads with the 918 springs and ti retainers. the iron heads have 2 bolts broke off that have been fought me until I'm ready to turn them in to boat anchors.So what would you guys do?
thanks
eddie
thanks
eddie
04-13-2009, 06:06 PM
#2
TECH Addict
iTrader: (14)
Join Date: May 2005
Location: Simi Valley, CA.
Posts: 2,727
Likes: 0
Received 0 Likes
on
0 Posts
Did the 2 bolts break off in the block or in one of the heads?
And for your question, deffinately use the the LS1 heads, they will raise the compression and help the engine breath better from the porting. Just remember to get a nice sized cam/intake to compliment the heads.
And for your question, deffinately use the the LS1 heads, they will raise the compression and help the engine breath better from the porting. Just remember to get a nice sized cam/intake to compliment the heads.
04-14-2009, 05:28 PM
#5
TECH Fanatic
Trending Topics
04-15-2009, 06:56 AM
#8
Those iron heads are the same casting as the 72CC 317 aluminum heads. Your LQ4s crank is .400" longer which means yout CANNOT use any LS1 transmission. You have to use an LT1 4l60e or 700r4 or something with an SBC crank spacing.
The 99-2000 LQ4s only came with 4l80es behind them which were still SBC/BBC offset which meant that the crank needed to be longer. It's the reverse of people here running a spacer to allot an TH400 to bolt to the LS1. The spacer is built into the crank. You can machine down the crank surface, or just run an SBC transmission. I know because i have one sitting on my engine stand on my porch waiting to go in my Datsun. I am trying to figure out if i can use an LT1 T56 behind it or not. I'm pretty sure i can i just need to make sure i can use an LT1 clutch disk with an LS1 flywheel and pressure plate.
The 99-2000 LQ4s only came with 4l80es behind them which were still SBC/BBC offset which meant that the crank needed to be longer. It's the reverse of people here running a spacer to allot an TH400 to bolt to the LS1. The spacer is built into the crank. You can machine down the crank surface, or just run an SBC transmission. I know because i have one sitting on my engine stand on my porch waiting to go in my Datsun. I am trying to figure out if i can use an LT1 T56 behind it or not. I'm pretty sure i can i just need to make sure i can use an LT1 clutch disk with an LS1 flywheel and pressure plate.
Last edited by Shawn MacAnanny; 04-15-2009 at 07:48 AM.
04-15-2009, 05:46 PM
#9
Teching In
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: N.W FL
Posts: 33
Likes: 0
Received 0 Likes
on
0 Posts
Those iron heads are the same casting as the 72CC 317 aluminum heads. Your LQ4s crank is .400" longer which means yout CANNOT use any LS1 transmission. You have to use an LT1 4l60e or 700r4 or something with an SBC crank spacing.
The 99-2000 LQ4s only came with 4l80es behind them which were still SBC/BBC offset which meant that the crank needed to be longer. It's the reverse of people here running a spacer to allot an TH400 to bolt to the LS1. The spacer is built into the crank. You can machine down the crank surface, or just run an SBC transmission. I know because i have one sitting on my engine stand on my porch waiting to go in my Datsun. I am trying to figure out if i can use an LT1 T56 behind it or not. I'm pretty sure i can i just need to make sure i can use an LT1 clutch disk with an LS1 flywheel and pressure plate.
The 99-2000 LQ4s only came with 4l80es behind them which were still SBC/BBC offset which meant that the crank needed to be longer. It's the reverse of people here running a spacer to allot an TH400 to bolt to the LS1. The spacer is built into the crank. You can machine down the crank surface, or just run an SBC transmission. I know because i have one sitting on my engine stand on my porch waiting to go in my Datsun. I am trying to figure out if i can use an LT1 T56 behind it or not. I'm pretty sure i can i just need to make sure i can use an LT1 clutch disk with an LS1 flywheel and pressure plate.
