Sell your current STS and buy one with the V8.
engine swap
I have a v6 but want to swap out for a 4.6 north star will I halso have to change out transmission? Or would the existing v6 tranny be fine with the v8???
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:yeah:Ludacrisvp said:Sell your current STS and buy one with the V8.
Seriously, don't put any more thought into it.
Lol finally people with answers similar to mine...
I'm not sure that you really appreciate how much work is required to make this change. This is definitely not a change even worth considering.
Transmissions are different
It's said anything can be done, but I 'm with the crowd. I can't recall a member with a running parts-car to provide donations. I think it would take that and a lot of work, know-how & probably access to the GM Service Network.
But... If you do it,
Post Often!
But... If you do it,
Post Often!
The only interesting swap is a v series lc3 engine into a awd STS.
Interesting all right; if you like broken drive line parts.
Koz - That can be prevented by not pressing too hard on that long thin pedal on the right.
On second thought, you're right.
On second thought, you're right.
Yeah, you might be depending on margins of strength that don't exist. Especially after a couple of beers.Koz - That can be prevented by not pressing too hard on that long thin pedal on the right.
On second thought, you're right.
It's impossible even without beer. Just takes one fool who thinks he'll pass you in the right lane of the on ramp in his Toyota.
Actually short of the better brakes and 6 lug wheels a FULL engine swap into a 07+ v8 STS sport (so it has the LSD rear) has the same rear end axles and I'm 90% sure transmission so "mechanically" it should tolerate it (assuming rwd without factoring the t case and front axle). As for suspension awd got the same SIZE rear bar (but supposedly not as stiff) and both front and rear bars can be swapped to any model STS. Springs again can be swapped. Shocks personally I think the magnetic ride would prove better than the Sachs shocks used on the V.dkozloski said:Interesting all right; if you like broken drive line parts.
The LC3 sc CAN bolt to the LH2 northstar without issue. Run a larger pulley to lower the boost and I THINK the LH2 could handle it. No idea how long though. The V used larger walls hence the 4.4 vs 4.6 displacement difference as well as being hand build using forged components.
Personally I thought about it but it's just not worth it. I have my Camaro for speed and the LH2 with awd is fast "enough" (note more power is alway great within financial reasoning IE cost to power ratio) to easily handle most need for speed moments.
The V does have a slightly different transmission compared to the 6spd used in 07+ V8 / 08+ V6/8
V6 trans is completely different model from the v8. I believe the v and v8 rwd trans from 07+ was the same.Ludacrisvp said:The V does have a slightly different transmission compared to the 6spd used in 07+ V8 / 08+ V6/8
Edit.
While I was correct about the v6 and v8 being completely different it does appear the v and v8 trans are different as well. I would assume beefer internals and perhaps better cooling/ratios as opposed to the standard v8 rwd trans.
Might you be referencing my thread?V6 trans is completely different model from the v8. I believe the v and v8 rwd trans from 07+ was the same.
Edit.
While I was correct about the v6 and v8 being completely different it does appear the v and v8 trans are different as well. I would assume beefer internals and perhaps better cooling/ratios as opposed to the standard v8 rwd trans.
http://www.cadillacforums.com/forum...sion-differences-6l50-6l80-6l90-internal.html
Checked Hollander interchange actually.Ludacrisvp said:
I have been a mechanic since the 60s. I have an STS 3.6 nice car that timing chain went bad. My son also a mechanic drift races and has numerous 6.0 la engines. Why is everyone afraid of this swap? I have friends that are GM line mechanics and they tell me it's not that hard. Drive shaft radiator fuel pump motor mounts not a big deal. We're swapping engine and trans. It's rear wheel drive. I came on here for any surprises so I have all parts needed. Will have 3 experienced mechanics doing the work. Want to make sure I have everything needed. Why is everyone so negative on this?:yeah:
Seriously, don't put any more thought into it.
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