V8 or Twinturbo 6

[2ndclasscitizen]

Did you have a particular TTV6 in mind? Quite a lot of Japanese motors have iron blocks, something to keep in mind.

But I think if you're doing it yourself, and have a specific budget, go the V8. It'll be cheaper and simpler for you to do.

[h00t_h00t]

Also, both the Ford and Chevy engines are available from specialists as ready to run engines (carb'ed) finding a TTV6 that will run as easily will be difficult to get running with more electronics and you will have to re-map the ECU so that it will work without the signals from sensors you car doesn't have (abs, traction control, air-bags etc.) Its do-able but may turn out to be more expensive, less reliable and unless you have the equipment and knowledge you'll need specialist help.

[Fiorano]

thanks guys -nice input...
note this car is a 1965- so smog and megasquirt ECU is allowed...
The V8 is pulling a head
even a high strung V6 no turbos is a possibility...

[nota]

Those Volvo 240T racers which competed in Group A back in the 1980s were very rapid devices. Volvo motors are generally strong & reliable. Depending on what country you come from, why not consider keeping everything 'in house' by using a blown B23 series as it might well be cheaper and simpler than sourcing then fitting a 'built' V8?

[Fiorano]

true true- and all volvo and less metal work and ..
This is my first from scratch racer...
i built up a nissan with nissan bits and it works great, but i really want a firebreather

[h00t_h00t]

There is a volvo engined Opel Manta with 578hp here:
http://www.hilmersson-racing.com/start.asp?show=j

I assumed he had a massive budget though.

[Mr.Tiv]

i think the v8 is the cheaper way, and, quite possibly, lighter way, though I don't know how tight of a squeeze that would be-can't be much bigger than a v6, two turbos and the plumbing for those turbos

[Fiorano]

yeah that volvo engine is awesome, but wayyy to expensive i think.
the v8 seems the better option- or a natural Aspirated v6? as the turbos would be too much plumbling and space wise-perhaps.
I saw a certain jackie stewart drive a 3.7 litre v6 in an old capri, and it sounded mad and dashed around a bit too.
but the sound of the old trans-am racers...
V8....mmm

[Slicks]

Were do you live? Thats really going to effect the prices and engine choices.

[h00t_h00t]

yeah that volvo engine is awesome, but wayyy to expensive i think.
the v8 seems the better option- or a natural Aspirated v6? as the turbos would be too much plumbling and space wise-perhaps.
I saw a certain jackie stewart drive a 3.7 litre v6 in an old capri, and it sounded mad and dashed around a bit too.
but the sound of the old trans-am racers...
V8....mmm

Just how much power are you aiming for? Have you done alot of work to the chassis because the car might not take the power either a V8 or TTV6 will throw out.

[Fiorano]

I am in the US, in California. yes the chassis started from the original frame, and body and i welded a cage and tube frame conecting it all together. with an x brace under neath and all the points put together. the front end is tube sub frames welded to the real frame. i hope it holds up. I am not aiming for all out power per se. an arbitrary figure like 500 hp doesn't mean anything if the car can not use it.
i can transplant a stock S2000 motor and trans and that would be the slickster zipper car to go around town and hooligan about, but for track attacks, in GT Lite, GT2 or Gt-1 (SCCA classes) it would have to Huff about 450-550hp... (GT lite do about 250-275, GT 2 about 350-400 i seem to recall) so in GT2 (note the Panoz GTS (not the PAnoz Esperante GT ALMS/Lemans car) fall here the tube frame one with a carburettor V8 385 HP 350lbft Torque)
I hope this helps you guys help me. the current 4 banger is wheeeeeezy
These are not real targets BTW, this is just the class or type of car I would like to run with or maybe Vintage stock cars, a littel V8 or NA V6 Volvo vs. V8 Hudsons, Lincolns, Galaxies, Falcons...you get it?

[h00t_h00t]

Stick a cadillac 500c engine in it. The back wheels won't touch the floor but it would be hilareous when you open the bonnet to show people what you are running.

[Fiorano]

ha ha - tha'd be funny.
it should be well back- the rear 2 cylinders should be where the heater was and in the fire wall area- a new sheet one to be added in.