Thinking of going 7ltr

[brummiewedge]

I might have the option of going 7ltr as, Craig at Dyno Torque might be going 7.5!! This means my 6.3 would be up for grabs. Spec is stroked Eagle Dynamically balanced Crank, H section Rods, Forged pocketed pistons, Flowed heads, XR285 cam, 1.8 Crane roller lifters, Roller cam followers, Crane cam chain set, LS2 manifold, 90mm Throttle Body. About 5'000 miles under its belt since built. Anyone interested, what sort of money is it worth even?

[Graham]

Might be depending on cost and budget. Im looking for something to put in the new racer, and i've been veering towards ls7's although I here there is now an ls3 thats quite cheep..

[chuntington101]

are you using the LS1 or LS2 block?? if so are you are pushing the limiots of the block!

most wanting 7+ltr will go for a resleaved block using Darton wet sleaves. these things are VERY VERY strong and can let you run much bigger bores and are longer so longer stocke isn't a problem (this reduces wear on the skirts and there is less chance of the piston coming out the bottom of the cylinder).

alternativly go LS7 and you have eveyrthing already. maybe swap the pistons out and run more comp.

thanks Chris.

[jellison]

Brum - LS7 with an LS2 Sump and a Lingenfelter cam - then a remap - should be easy fit and easy 560bhp!!!!!

[brummiewedge]

Yeah, but wanna sell mine 1st!!

[jellison]

5k something like that new LS6 / 2 money landed taxes paid - yes more power but not new. Just a guess?

[brummiewedge]

I was thinkin the 4K mark would be fair, 100bhp/£ money not bad!

[chuntington101]

jellison said:

Brum - LS7 with an LS2 Sump and a Lingenfelter cam - then a remap - should be easy fit and easy 560bhp!!!!!

what you going to do about the drysump system?? if you want to use its that great (no more oiling problems ) but if not i think you need a new crank (the pump is built into it). just what i have heard mind you.

Chris.

[Graham]

brummiewedge said:

I was thinkin the 4K mark would be fair, 100bhp/£ money not bad!

searches hard for piggy bank... what bits are you selling the motor with? as i assume most bits are going on the new motor.

G

[jellison]

chuntington101 said:

jellison said:

Brum - LS7 with an LS2 Sump and a Lingenfelter cam - then a remap - should be easy fit and easy 560bhp!!!!!

what you going to do about the drysump system?? if you want to use its that great (no more oiling problems ) but if not i think you need a new crank (the pump is built into it). just what i have heard mind you.

Chris.

That will be why you have not done this then! A Dry Sumped LS7 does not fit in the TVR chassis rails! No I think 5 is a good price. You can get a low mile 500 Rv8 for about 3 and they make 260bhp!

Darton 7 is the way to go. Unless you want to start cutting chassis rails and remodelling them round dry sump pumps on the passengers side and AC pumps on the drivers side. Alot harder to explain to an insurance company - if you want to tell them all the mods

[plasticman]

The scavenge pump on the LS7 is on the end of the crank with the oil pump and the timing chain cover has a longer nose to accomadate it . As long as there is space at the front of the engine then it should fit just as easily , David

[brummiewedge]

The motor can go with inlet manifolds, injection, starter, alternator is nissan Micra, small and £15 from breakers, the bracket i had to make so would like to keep, water pump can go with, it has been adapted to house the TVR sender. Rockercovers can go as can the sump. I will have to have a word with Craig to finalise, but if we are going to ship some kit from the States then i can try to make the motor as complete as poss.

[GreenV8S]

jellison said:

if you want to tell them all the mods

The smiley suggests you might not want to, but surely that would be a seriously bad move (as well as illegal I suspect).

[chuntington101]

thinking a bit out of the box here but still. instead of going BIGGGGG CC why dont you supercharge it??? i know this sounds really MAD, and it is, but it might be cheaper than doing a high comp, big inch block.

here is a Procharged Corvette and i recon the head unit would fit!

http://www.exoticperformanceplus.com/projectCar.ph...

just an idea and would be VERY differant.

thanks Chris.

[jellison]

GreenV8S said:

jellison said:

if you want to tell them all the mods

The smiley suggests you might not want to, but surely that would be a seriously bad move (as well as illegal I suspect).

That is my point it would be crazy to cut the chassis and put in tubes to go round a dry sump pump and an AC on the other side.

My insurer know EVERTHING I have done to mine - no chassis chopping AT ALL. I have measured it and std LS7 does not fit. Even if you could squeeze it in between the rails (i.e. run it closer to the drivers side - then you screw up the best routing for the exhausts (at least in a chim / griff as going forward and back down past the sump either side between the chassis rails...

[Boosted LS1]

You would have to convert the ls7 to ls2 spec in some departments to make it work. IMO, you may as well buy an aftermarket 427 or tune an ls2.

Boosted.

[tinker-27]

i think people are barking up the wrong tree here my motor is not a factory 7lt (they are not good value), as boosted said you are better using a ls2 block which is stronger and boring and stroking it which is what i built with cnc aftermarket heads etc etc so it the same size as a std ls motor. i dont see the point in dry sump unless running slicks on the track.

[Boosted LS1]

chuntington101 said:

jellison said:

Brum - LS7 with an LS2 Sump and a Lingenfelter cam - then a remap - should be easy fit and easy 560bhp!!!!!

what you going to do about the drysump system?? if you want to use its that great (no more oiling problems ) but if not i think you need a new crank (the pump is built into it). just what i have heard mind you.

Chris.

Crank is a bit longer with an extra keyway to accomodate the pump which is a separate part. This is why the front cover is deeper and why the sump is longer iirc. There's a glut of ls7 oiling, front end parts etc because a converted ls2 is the preferred route for most tuners and the ls7 stuff doesn't suite retro installs.

Boosted.

[Graham]

But if you were looking to go dry sump ( racing on slicks) would the ls7 be the simplest route or would it be better to add dry sump to a ls2/6 hybrid.. and now whats an ls3!!


G

[jellison]

tinker-27 said:

i think people are barking up the wrong tree here my motor is not a factory 7lt (they are not good value), as boosted said you are better using a ls2 block which is stronger and boring and stroking it which is what i built with cnc aftermarket heads etc etc so it the same size as a std ls motor. i dont see the point in dry sump unless running slicks on the track.

Exactly what I was saying with a converted LS - yes getting off the point as Brumm is getting the bored and stoked 2 from you.