I was wondering, has anyone just replaced their factory 5.7 short block with the 6.0 short block, And then just topped it off with the ls1(or 6.0 truck heads) heads and intake. I'm talking in factory form(not increaseing the displacement of the 6.0). Would there be any gains from this? What would the CR be? Just a thought. Would the minor displacment gain be worth it? I have only recently started to think about this becuase I keep seeing the "360" strokers being used, and is'nt the 6.0 a 366? I know thw 6.0 block is great but what what about the entire short block? Could it directly replace the 5.7 short block? And if a few thing were changed(like the cam/ heads/ intake) would it be worth it? I am aware that the 6.0 heads flow better than the 5.7's, so they would probably be used(p&p). So what do you think? Good idea / Bad idea? How much is the entire short block?

Any help would be appreciated,
Marty <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />

 

ttt

 

I'm sorry Marty I wouldn't know what to tell you about your question, but if I were you and you have the cash to spend I'd go with new heads, cams, and a torque convertor if you're an a4 or a 12 bolt and 4.10's if you're a m6, or if you're really going to go after it a 422 Stroker Motor, but that is really expensive... whatever you do, good luck

Floyd

 

Key difference between a stock block for us and a 6.0 block is....

BORE size.

We run a 3.900 bore stock.

6.0 blocks run a 4.000 bore.

So how come we have almost a 350ci with only a 3.900 PSJ? I thought the traditional SBC is a 4.000 bore PSJ!

Good that you asked Lil' Kevin.

We have longer rods and more stroke.

I am currently running a 6.0 block bored .060 over (4.060 bore) and a Lunati 4.075 stroker crank for an effective displacement of 418ci.

 

[quote]Originally posted by MUSTANGEATER:
<strong>I'm sorry Marty I wouldn't know what to tell you about your question, but if I were you and you have the cash to spend I'd go with new heads, cams, and a torque convertor if you're an a4 or a 12 bolt and 4.10's if you're a m6, or if you're really going to go after it a 422 Stroker Motor, but that is really expensive... whatever you do, good luck

Floyd</strong><hr></blockquote>

Thanks Man,
I already have a 3200pi I am pretty happy with. I do plan on getting heads and cam first, see what I can do with that and then bump the displacement.

Marty

 

[quote]Originally posted by Pro Stock John:
<strong>Key difference between a stock block for us and a 6.0 block is....

BORE size.

We run a 3.900 bore stock.

6.0 blocks run a 4.000 bore.

So how come we have almost a 350ci with only a 3.900 PSJ? I thought the traditional SBC is a 4.000 bore PSJ!

Good that you asked Lil' Kevin.

We have longer rods and more stroke.

I am currently running a 6.0 block bored .060 over (4.060 bore) and a Lunati 4.075 stroker crank for an effective displacement of 418ci.</strong><hr></blockquote>

But would it work??? The 346 runs 6.098 rods right? If not then what length are they? What length are the 6.0's rods? What is the difference in stroke?

Thanks For the help guys,
Marty

 

5.3L, 5.7L, and 6.0L all have the same stroke, its 3.62". The same connecting rod length is used also: 6.098". The 6.0L LQ4 engine does have lower compression because of dished pistons (9.4-1 I think) The 345hp 6.0L LQ9 engine has 10-1 compression, with a different piston part number, same part number on the heads. I'm assuming flattops as I havn't had any of the 345hp 6.0L's apart.

 

Pro Stock John you're so special. <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" /> You're the most smartest, fastest, bestest LS1'r that's never been. <img src="images/icons/tongue.gif" border="0"> <img src="images/icons/tongue.gif" border="0">

 

[quote]Originally posted by Joseph:
<strong>5.3L, 5.7L, and 6.0L all have the same stroke, its 3.62". The same connecting rod length is used also: 6.098". The 6.0L LQ4 engine does have lower compression because of dished pistons (9.4-1 I think) The 345hp 6.0L LQ9 engine has 10-1 compression, with a different piston part number, same part number on the heads. I'm assuming flattops as I havn't had any of the 345hp 6.0L's apart.</strong><hr></blockquote>

Thank you,
Marty

 

The crankshafts may be identical in appearance. Most if not all 5.7L LS1's have a hollow drilled crankshaft. The truck engines do not have that. They are also balanced differently to accout for the difference in piston weight. All the connecting rods have the same part number from what I have looked up.

 

[quote]Originally posted by Joseph:
<strong>5.3L, 5.7L, and 6.0L all have the same stroke, its 3.62". The same connecting rod length is used also: 6.098". The 6.0L LQ4 engine does have lower compression because of dished pistons (9.4-1 I think) The 345hp 6.0L LQ9 engine has 10-1 compression, with a different piston part number, same part number on the heads. I'm assuming flattops as I havn't had any of the 345hp 6.0L's apart.</strong><hr></blockquote>

Got a few more questions,

So they have the same stroke but do they use the same crank? The rod lengths are the same but are they the same rod? I'm just asking this b/c I want to see which(if any) parts are identical/interchangeable.

Thanks agian,
Marty

 

Thanks, If you find out any more info please post it.

Marty