New GTR Build - Engine and Gearbox questions
Discussion
Hi All
First of all, please allow me to introduce myself as a newbie to this forum.
Second, I have started the process of building a GTR, and am nearly always wondering about what engine and gearbox to run.
ENGINE: I would like to use an LS9, but I understand that it will not fit, so an LS7 seems to be the kiddy. I also believe that this is 600BHP as stock, but is the really 600BHP, as I have been told that American quoted BHP is not quite the same?
Coming from the bike industry, these engines seem quite low tech with push rod 2 valve heads and long stroke lazy engines. Are there any common upgrades available to spice things up a bit, or is it best to keep the stock character?
GEARBOX: Now this is a difficult one. I run a little company making racing shifting system for motoGP bikes and the like, and so would like a sequencial 6 speed gearbox that I can develop some electronic trickery for, such as quickshifter or paddle shift. At the same time I don't want to spend absolute fortunes on a gearbox.
If I can't find the right sequencial box, then is there a viable 6 speed box that I can use?
Thank you in advance?
Gareth
First of all, please allow me to introduce myself as a newbie to this forum.
Second, I have started the process of building a GTR, and am nearly always wondering about what engine and gearbox to run.
ENGINE: I would like to use an LS9, but I understand that it will not fit, so an LS7 seems to be the kiddy. I also believe that this is 600BHP as stock, but is the really 600BHP, as I have been told that American quoted BHP is not quite the same?
Coming from the bike industry, these engines seem quite low tech with push rod 2 valve heads and long stroke lazy engines. Are there any common upgrades available to spice things up a bit, or is it best to keep the stock character?
GEARBOX: Now this is a difficult one. I run a little company making racing shifting system for motoGP bikes and the like, and so would like a sequencial 6 speed gearbox that I can develop some electronic trickery for, such as quickshifter or paddle shift. At the same time I don't want to spend absolute fortunes on a gearbox.
If I can't find the right sequencial box, then is there a viable 6 speed box that I can use?
Thank you in advance?
Gareth
Hi
Well, I raced bikes for the most of my life so far.....now I'm too fat, unfit and don't mend like I used to....so I really fancy a complete change and build a ROAD GTR. I will be doing a few tracks days and may even enter into the odd race or two (would love to race, but bike racing a very, very expensive, and I imagine that racing these cars must be for the professional driver or millionaire enthusiast).
So, back to the engine choice. It is very interesting to read that I can fit an LS9. That would be great, but I guess that I then need to buy and fit the intercooler etc. which is not a problem, it just sounds very expensive. Also, the gearbox metioned earlier looks like it is exaclty what I am after (thanks for that!), and I rang them up today, it will not take more than 500ft/pound of torque, so either I change the box again, or back to a crate LS7?
Further research has shown that the crate LS7 is 505BHP and 470ft.lb of torque - a seemingly perfect match for the GTR. But is this enough? The last thing I want to do is build this and then think that I wish I had more power, that would then require tuning and a gearbox change!
Your hard earnt words of wisdom would be very much appreciated.
Gareth
Well, I raced bikes for the most of my life so far.....now I'm too fat, unfit and don't mend like I used to....so I really fancy a complete change and build a ROAD GTR. I will be doing a few tracks days and may even enter into the odd race or two (would love to race, but bike racing a very, very expensive, and I imagine that racing these cars must be for the professional driver or millionaire enthusiast).
So, back to the engine choice. It is very interesting to read that I can fit an LS9. That would be great, but I guess that I then need to buy and fit the intercooler etc. which is not a problem, it just sounds very expensive. Also, the gearbox metioned earlier looks like it is exaclty what I am after (thanks for that!), and I rang them up today, it will not take more than 500ft/pound of torque, so either I change the box again, or back to a crate LS7?
Further research has shown that the crate LS7 is 505BHP and 470ft.lb of torque - a seemingly perfect match for the GTR. But is this enough? The last thing I want to do is build this and then think that I wish I had more power, that would then require tuning and a gearbox change!
Your hard earnt words of wisdom would be very much appreciated.
Gareth
Hi All
WOW! Thank you for all the advise and info.
Unless something changes, I will probalby now go for the G50 and a stock crated LS7. Once I have the engine, I will look into a bit of basic tuning myself (flowing, blue printing, cam/valves/valve train). What I know about US V8's is scary, but I do know my way around a bike engine... Can't be that different? LOL :-)
Knowing me, I will also have a look at making a system to bolt onto the G50 to change to paddle shift. I can probably use most of the stuff at work.
Thanks again.
Gareth
WOW! Thank you for all the advise and info.
Unless something changes, I will probalby now go for the G50 and a stock crated LS7. Once I have the engine, I will look into a bit of basic tuning myself (flowing, blue printing, cam/valves/valve train). What I know about US V8's is scary, but I do know my way around a bike engine... Can't be that different? LOL :-)
Knowing me, I will also have a look at making a system to bolt onto the G50 to change to paddle shift. I can probably use most of the stuff at work.
Thanks again.
Gareth
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