Biggest Engine in an Ultima?
Discussion
The latest all alloy Chevy Small Block LS1 has been stretched to 427 cubes for the C5R and makes 650bhp(can be bought as a long engine direct from GM) but other aftermarket builders have taken it out to 450 ci (approx 7.4 litres)
But you can get Big Blocks made of aluminium from a variety of builders, which goes some way to offsetting the weight disadvantage over a small block.
A big block of a given displacement when measured against a bored & stroked small block of the same capacity shows better power and torque due to the larger heads / valve size / heat dissipation. This is why they can be a better choice, depending on the application of course.
Anyway I was just wondering who had the biggest capacity V8 in an Ultima.
So who has the most powerful? GTR-TT sounds like you may be up for that honour!
But you can get Big Blocks made of aluminium from a variety of builders, which goes some way to offsetting the weight disadvantage over a small block.
A big block of a given displacement when measured against a bored & stroked small block of the same capacity shows better power and torque due to the larger heads / valve size / heat dissipation. This is why they can be a better choice, depending on the application of course.
Anyway I was just wondering who had the biggest capacity V8 in an Ultima.
So who has the most powerful? GTR-TT sounds like you may be up for that honour!
GTR-TT said:
but just think of how good a 700bhp big block would sound
Why big block?? I guess my 5.1 liter 1000+ HP V8 will sound good enough when I rev 10500!! and with a wheight of 150 kg it will KILL
1000+ hp........
holy 
u gotta let me go for a ride sometimeGTR-TT said:
but just think of how good a 700bhp big block would sound
Why big block?? I guess my 5.1 liter 1000+ HP V8 will sound good enough when I rev 10500!! and with a wheight of 150 kg it will KILL
Holy cow, 10,500 rpms? Good grief!!!
That sounds like a fantastic engine setup. What kind of engine are you using and how can I get the same setup when I build an Ultima? Did you custom build it yourself or did you order it?Kurt Dobson in Salt Lake City has GTR with a TT Gen 1 sbc putting out 1200 bhp.
There's a guy in Pennsylvania putting an alloy 632 cid big block in his GTR factory built roller.
Why is it all the especially cool GTR's are yellow?
www.summitracing.com and www.jegs.com have a Hardcore 454 small block for $10000.
There's a guy in Pennsylvania putting an alloy 632 cid big block in his GTR factory built roller.
Why is it all the especially cool GTR's are yellow?
www.summitracing.com and www.jegs.com have a Hardcore 454 small block for $10000.
jschwartz said:
Kurt Dobson in Salt Lake City has GTR with a TT Gen 1 sbc putting out 1200 bhp.
There's a guy in Pennsylvania putting an alloy 632 cid big block in his GTR factory built roller.
Why is it all the especially cool GTR's are yellow?
www.summitracing.com and www.jegs.com have a Hardcore 454 small block for $10000.
jschwartz said:
Kurt Dobson in Salt Lake City has GTR with a TT Gen 1 sbc putting out 1200 bhp.
There's a guy in Pennsylvania putting an alloy 632 cid big block in his GTR factory built roller.
Why is it all the especially cool GTR's are yellow?
www.summitracing.com and www.jegs.com have a Hardcore 454 small block for $10000.
I have one of these 454 on my GTR. ¡¡ Terrific !!
What sort of torque are typical of big block engines? After all, Ultimas have a very special torque limiting device mounted behind the engine...the gearbox!!
I agree with Steve D, Im planning to build an engine which sacrifices some bottom end torque for top end power...a 9000 rpm rev limit should help a little!
It should produce around 550 fl/lbs of torque and I think 600 ponies should be more than enough (well at least for me)
The biggest problem everyone will face is traction. This will be the greatest equiliser meaning there would by very little difference in performance between 600 hp and 1000 hp, at least at sane speeds anyway.
Andy
I agree with Steve D, Im planning to build an engine which sacrifices some bottom end torque for top end power...a 9000 rpm rev limit should help a little!
It should produce around 550 fl/lbs of torque and I think 600 ponies should be more than enough (well at least for me)
The biggest problem everyone will face is traction. This will be the greatest equiliser meaning there would by very little difference in performance between 600 hp and 1000 hp, at least at sane speeds anyway.
Andy
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