ls1 v8 upgrade??

Author
Discussion

Bluebottle

3,498 posts

241 months

Saturday 30th May 2009
quotequote all
LS7Everything said:
we have 2 Ls7 Sagaris booked for track day in july with some rather special drivers.
where?

Gazzab

21,121 posts

283 months

Sunday 7th June 2009
quotequote all
Speed eight said:
LISTEN UP!

To all you tape measure heroes and Pub talk specialist.

How do I know that the LS will NOT fit unless you carve the chassis up?

Because I have had one in the bloody engine bay, that is how.

Now the Tuscan chassis rails are 22 inches apart, YES.......22 inches.
So how the *ucking hell will a 27 inch wide motor fit without cutting the rails...........over to all you EXPERTS!

Other points.
Have any of you taken any account of the bonnet "swoop" and where you will put the alternator and power steering pump?
Have you seen how much adjustment "swing" you will be left with on both of these items?

Have you any conception of the vertical chassis rail in the Tuscan chassis and how this will impede the position of the LS motor/gearbox/starter motor position and thus the forward position of the motor itself?

Have you any real idea as to how much vertical height you will be dealing with when the bonnet is down and where the maximum height will be in relation to the forward to rear position?

The answer to all of the above is NO!

Speed Eight.
So will it fit in a Tuscan?

dbv8

8,655 posts

221 months

Sunday 7th June 2009
quotequote all
Gazzab said:
Speed eight said:
LISTEN UP!

To all you tape measure heroes and Pub talk specialist.

How do I know that the LS will NOT fit unless you carve the chassis up?

Because I have had one in the bloody engine bay, that is how.

Now the Tuscan chassis rails are 22 inches apart, YES.......22 inches.
So how the *ucking hell will a 27 inch wide motor fit without cutting the rails...........over to all you EXPERTS!

Other points.
Have any of you taken any account of the bonnet "swoop" and where you will put the alternator and power steering pump?
Have you seen how much adjustment "swing" you will be left with on both of these items?

Have you any conception of the vertical chassis rail in the Tuscan chassis and how this will impede the position of the LS motor/gearbox/starter motor position and thus the forward position of the motor itself?

Have you any real idea as to how much vertical height you will be dealing with when the bonnet is down and where the maximum height will be in relation to the forward to rear position?

The answer to all of the above is NO!

Speed Eight.
So will it fit in a Tuscan?
whistle

shpub

8,507 posts

273 months

Sunday 7th June 2009
quotequote all
I am pretty sure it will but the proof is actually doing it. Done some provisional measuring and haven't found anything that stops it which is good.

The plan is to complete the Cerbera Speed Six to get the Speed Six side of the conversion sorted out and then to do a T car. I've got a car all lined up for that. It is great to see that it has been done with a T car as it confirms what I have been thinking. The challenge for me is to see if it can be done for the same cost as the Cerb conversion.


Englishman

2,222 posts

211 months

Sunday 7th June 2009
quotequote all
Bluebottle said:
LS7Everything said:
we have 2 Ls7 Sagaris booked for track day in july with some rather special drivers.
where?
Would certainly be interested in seeing and hearing the mythical beasts too yes

JR

12,722 posts

259 months

Monday 22nd June 2009
quotequote all
Englishman said:
Bluebottle said:
LS7Everything said:
we have 2 Ls7 Sagaris booked for track day in july with some rather special drivers.
where?
Would certainly be interested in seeing and hearing the mythical beasts too yes
Any news?

Graham

16,368 posts

285 months

Monday 22nd June 2009
quotequote all
JR said:
Brummmie said:
having had a squint at it, i would say it will go. Sagaris has been done already, so cant see why not.
That's news to me. Are you sure that you are not getting confused with the racing Tuscan Challenge Car that has been rebodied with a Sagaris shell?
Ls doesnt fit the challenge car chassis without modding the top chassis rails... sagaris shell or otherwise hehe

JR

12,722 posts

259 months

Monday 22nd June 2009
quotequote all
Graham said:
JR said:
Brummmie said:
having had a squint at it, i would say it will go. Sagaris has been done already, so cant see why not.
That's news to me. Are you sure that you are not getting confused with the racing Tuscan Challenge Car that has been rebodied with a Sagaris shell?
Ls doesnt fit the challenge car chassis without modding the top chassis rails... sagaris shell or otherwise hehe
That's surprising news given that the RV8 is a few inches wider than the LSx.

Graham

16,368 posts

285 months

Monday 22nd June 2009
quotequote all
JR said:
Graham said:
JR said:
Brummmie said:
having had a squint at it, i would say it will go. Sagaris has been done already, so cant see why not.
That's news to me. Are you sure that you are not getting confused with the racing Tuscan Challenge Car that has been rebodied with a Sagaris shell?
Ls doesnt fit the challenge car chassis without modding the top chassis rails... sagaris shell or otherwise hehe
That's surprising news given that the RV8 is a few inches wider than the LSx.
lsx is about .5" wider across the heads !! and the Serpentine rv8 ( With dry sump)only just fits.. IIRC the pre serp rv8 is slightly shorter fits a little further forward. IF the lsx is shorter than the pre serp motor you might get it in by moving it as far forward as possible but that would bugger the weight distribution...All The Sag bodied cars so far with LS motors have the top tubes moved about 40mm per side to allow the motor to fit in and as far back as possible. Even though there is an rv8 going in my chassis ( for now anyway) we're still modding the chassis to take the ls... needs a couple of mods for my gearbox as well!!



GingerNinja

3,961 posts

259 months

Monday 22nd June 2009
quotequote all
Well am very pleased that the LS7 fitment appears to have shut-up Speed Eight once and for all. I'm actually suprised Big Al hasn't popped in to nepotistically defend his good buddy and his archaic modifying ways.

grahamw48

9,944 posts

239 months

Monday 22nd June 2009
quotequote all
Oh I don't know...nothing wrong with varying opinions, and certainly adds flavour to the threads, as long as people don't take things too seriously. smile



GingerNinja

3,961 posts

259 months

Monday 22nd June 2009
quotequote all
grahamw48 said:
Oh I don't know...nothing wrong with varying opinions, and certainly adds flavour to the threads, as long as people don't take things too seriously. smile
Quite agree, but when that opinion gets shouty and repeated ad nauseum, then am not going to complain when it goes away.

Graham

16,368 posts

285 months

Monday 22nd June 2009
quotequote all
I dont think there is anything archaic about speed8's fitment its just an alternative.. but the sbc and ls certainly seem to have very intrenched fans !!!! Im just glad to see that there are some well engineered options available if you do want to fit an alternative V8..

I'll admit my preference is for the ls, but thats because as standard its lighter and I understand electronics and maps more than I understand carbs... the sbc has the advantage of 30+ years in tuning so it is very well understood what you need to do to it to get power and reliabilty.. tuning the ls isnt quite as mature yet.

Can the two camps simply agree that V8 good everything else bad and leave it at that hehe

heightswitch

6,319 posts

251 months

Monday 22nd June 2009
quotequote all
Graham said:
I dont think there is anything archaic about speed8's fitment its just an alternative.. but the sbc and ls certainly seem to have very intrenched fans !!!! Im just glad to see that there are some well engineered options available if you do want to fit an alternative V8..

I'll admit my preference is for the ls, but thats because as standard its lighter and I understand electronics and maps more than I understand carbs... the sbc has the advantage of 30+ years in tuning so it is very well understood what you need to do to it to get power and reliabilty.. tuning the ls isnt quite as mature yet.

Can the two camps simply agree that V8 good everything else bad and leave it at that hehe
clap

I have read both sides with interest. and cannot see what the fuss is about. Transplants are transplants. any engine can be made to fit any car.

The biggest issue to me is what the car is meant to do after the transplant.

Personally I would always go old school because I like engine bays with engines in them and chrome acutraments. I hate wiring, sensors etc etc.

Sometimes technology isn't a good thing and just complicates the end result for no better reason.

The relative merits of LS chevy as opposed to SB Chevy are akin to splitting fanny's hairs.

Both engines can be built to approx the same weight as near makes absolutely no difference in a road car. relative positioning , weights power outputs are all so so.

The first rule of engine swapping is "KISS" or keep it simple stupid!

The LS Engine can be bought new unpacked from a crate and installed with its easily purchased wires and buncum.

The 350 SB can be bought cheaper, re-built cheaper and ultimately be built with more power it therefore is often a cheaper swap.

Is one better than the other I doubt it. just different and more importantly both are not Ford or Mopar so are definitely not as good hehe

N.


teamHOLDENracing

5,089 posts

268 months

Monday 22nd June 2009
quotequote all
Graham said:
JR said:
Graham said:
JR said:
Brummmie said:
having had a squint at it, i would say it will go. Sagaris has been done already, so cant see why not.
That's news to me. Are you sure that you are not getting confused with the racing Tuscan Challenge Car that has been rebodied with a Sagaris shell?
Ls doesnt fit the challenge car chassis without modding the top chassis rails... sagaris shell or otherwise hehe
That's surprising news given that the RV8 is a few inches wider than the LSx.
lsx is about .5" wider across the heads !! and the Serpentine rv8 ( With dry sump)only just fits.. IIRC the pre serp rv8 is slightly shorter fits a little further forward. IF the lsx is shorter than the pre serp motor you might get it in by moving it as far forward as possible but that would bugger the weight distribution...All The Sag bodied cars so far with LS motors have the top tubes moved about 40mm per side to allow the motor to fit in and as far back as possible. Even though there is an rv8 going in my chassis ( for now anyway) we're still modding the chassis to take the ls... needs a couple of mods for my gearbox as well!!
As Graham says, the Tuscan Callenge top chassis rails don't need to be moved. Mine have been and as a result the LS engine sits further back and lower in the chassis than the AJP8 that it replaced. Frankly the engine couldn't go any lower without the gearbox hanging below the chassis. You could easily install the engine without moving any chassis tubes, if you accepted it sitting further forward.

rev-erend

21,434 posts

285 months

Tuesday 23rd June 2009
quotequote all
LS7Everything said:
We've not finished the Tuscans yet (Targa S and Convertible in build) but we do have 2 Sagaris completed and registered 2009 - so the LS7 does fit it just needs a little persuasion!!

Need to get some better pics up but it gives you an idea

LS - conversion looks excellent. Congratulations smile

The exhaust pipe on the drivers side - is it just one of the header pipes coming forward .. perhaps you only had room for 3 pipes and the third had to take a longer route. Pipe diameter looks to be about 2 inches ?

teamHOLDENracing

5,089 posts

268 months

Tuesday 23rd June 2009
quotequote all
LS7Everything said:
We've not finished the Tuscans yet (Targa S and Convertible in build) but we do have 2 Sagaris completed and registered 2009 - so the LS7 does fit it just needs a little persuasion!!

Need to get some better pics up but it gives you an idea



Do I detect the work of Mr Leech & co? Looks lovely, as one would expect.


LS7Everything

24 posts

185 months

Tuesday 23rd June 2009
quotequote all
teamHOLDENracing said:
LS7Everything said:
We've not finished the Tuscans yet (Targa S and Convertible in build) but we do have 2 Sagaris completed and registered 2009 - so the LS7 does fit it just needs a little persuasion!!

Need to get some better pics up but it gives you an idea
Do I detect the work of Mr Leech & co? Looks lovely, as one would expect.
Thanks, good detective work!

teamHOLDENracing

5,089 posts

268 months

Tuesday 23rd June 2009
quotequote all
Not really - an engine supplier asked me last week if you guys were racing at the moment, and when I said I thought not he wondered aloud what you'd done with the engines he'd supplied. I hadn't seen this thread before and when I saw the pictures there were a few similarities with the race car

The car does look great and must be seriously impressive on the road. Shame you're not racing currently

350Matt

3,740 posts

280 months

Tuesday 23rd June 2009
quotequote all
So just to clarify does the chassis need modifiying to get this splendid article in place?