Question? 408 cu in

**sloroller** · 01-11-2011, 03:50 PM

Hello everyone looking to start a winter project and looking to build a 408 engine. Tryn to figure out the block i need to start with? Thanks in advance

**youngrigo** · 01-11-2011, 03:53 PM

LQ9 or LQ4

**sloroller** · 01-11-2011, 04:01 PM

lq9 or lq4 what vehicles are these from? is that a 6.0 liter?

**35th-ANV-SS** · 01-11-2011, 04:08 PM

Yes, it's a 6.0L

**Jay37** · 01-11-2011, 04:12 PM

Trucks, buddy, Trucks.

**sloroller** · 01-11-2011, 04:22 PM

any alterations needed on install or will it bolt up with the same motor mounts? thanks

**mark21742** · 01-14-2011, 07:16 AM

The lower front alt bracket bolt hole is not drilled into the 6.0l block...you can either dril and tap one, or mod the bracket...on my GTO I just left the bolt out

**Sarge** · 01-15-2011, 03:37 AM

Yup^^^^ I left mine out also.........

**mark21742** · 01-15-2011, 05:52 AM

Wondered what happened to you Sarge. Nice to see you back!

**sloroller** · 01-15-2011, 01:23 PM

what do you gain besides cubic inches in 6.0 iron block and does the weight difference between the aluminum ls block and the iron 6.0 block justify the difference in hp vs weight? thanks

**Sarge** · 01-15-2011, 01:51 PM

Pressure is no issue. Stroke 'em/giggle gas 'em/Supercharge 'em/ whatever. They are strong as hell.

**mark21742** · 01-15-2011, 04:28 PM

Plus its only 85lbs heavier

**Sarge** · 01-15-2011, 05:05 PM

Relocate your battery to the trunk and the weight difference is minimum.

**35th-ANV-SS** · 01-16-2011, 06:41 AM

You can also get an aftermarket K-member to get the weight back down

**02transamce** · 01-16-2011, 08:56 AM

Scoggin-Dickey sells a aluminum ls2 block 413 c.i. Shortblock for $4,359.or a aluminum ls2 block 402 c.i. Shortblock for $4,295.
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**sloroller** · 01-16-2011, 03:57 PM

thanks so if a ls2 is 402 c.i. than what c.i. is a ls6? thats mine and would i be going backwards doing a lq9 or 4? thanks

**35th-ANV-SS** · 01-16-2011, 04:11 PM

LS6 is just a higher output version of the LS1 so it has the same ci as a LS1, 346 ci / 5.7L

6.0L = 366 ci

LS2 has higher compression than the LS1/LS6

**sloroller** · 01-16-2011, 04:29 PM

so ls3 is a 427c.i.? like in 2010ss? newbie just gettin a grasp on the c.i. s avaible for the ss thanks

**02transamce** · 01-16-2011, 04:31 PM

ls2 isn't 402ci,those are bored out ls2 blocks to get 402 and 413 ci. ls3 6.2l=376 ci

**sloroller** · 01-16-2011, 04:48 PM

so can you bore out a ls6 or the cylinder walls to thin? question can you stroke a ls 6 to get more cubes is the question or is that the reason so many are going to the iron lq9 and 4 blocks? thanks