here we go again - chevy monster

Mr Noisy · Mar 21, 2014

griffman said:
Noiseman

you and all the regulars on here are always very very welcome to come down to Sussex to see us and get a handle on what we do.

You will be made to feel at home, fed bacon butties and nice coffee, maybe asked to pass a spanner or two, have a browse around the breakers and spares cars to see if there is anything of use.

If you want to come on the train we will even collect you and drop you back at the station - 50 mins from Victoria.

have a great weekend all.

What a gent!

Mr Noisy · Mar 21, 2014

lynall said:
How come a 6.3 litre v8 only makes 380 bhp, sounds kind of low to me?
Have to add I would love 380bhp!

In the same way a 3.5 rover makes 160bhp

Very low tuned engines as stock, remember we are talking about very old motors with very old head designs here

Modern engines are hugely more efficient in all senses of the word

This is why the old motors are so fabulous sounding in comparison to the very smooth sounding modern v8s.

zen · Mar 22, 2014

mr griffman..pm sent..

griffman · Mar 22, 2014

Thor1950 said:
That is factory stock. A bit of tuning and 700 hp is possible.

Ford in there stock mustang is a 5.8 and 662 hp and gets a 15/24MPG city/highway

The 6.3 engine in my car was built for torque and relaibility and not for power - with a performer RPM cam, matching intake and 800 carb it will pull 450 bhp and the same torque(450) but it will be much higher up the rev range - and not suitable for a 4x4.

It is far from standard - a 5.7 chevy with iron heads makes 250 bhp at most - but 330 lbs/ft torque.

I have edelbrock performer Ali big-valve heads, matching inlet and carb, a rollin' thunder camshaft and, forged stroker crank and rods and keith black race pistons - and more besides.

This is what she sounds like

http://www.youtube.com/watch?v=n12EXemK4uM

My engine has over 300 lbs at just above idle - dyno sheets show 400 at 2000 rpm and slow rise to 450 at 3800 and virtually no tail-off.

I did build the bottom end to cope with up to 600 bhp though - if the mood takes takes me.

With a Victor intake, mad nascar cam and two 750 double-pumpers this will be about right - I may have to have some slightly bigger-valve heads done with smaller combustion chambers, but 3 grand will get me there

As for a stock 5.8 mustang pulling 662 bhp.

1 - that is a supercharged Shelby
2 - it is undriveable
3 - ford are notoriously 'over-enthusiastic' shall we say when it comes to quoting bhp figures

zen · Mar 22, 2014

i still prefer the jap v8's..built to race as standard..but the noise they make is i admit pooh compared to yanky v8's...having said that that...Sally sounds like a 80's f1 engine..no real rumble..but at 7000rpm..what a sound!!

quite looking forward to what BRB sounds like supercharger and nos an all..(rv8)

griffman · Mar 22, 2014

zen said:
i still prefer the jap v8's..built to race as standard..but the noise they make is i admit pooh compared to yanky v8's...having said that that...Sally sounds like a 80's f1 engine..no real rumble..but at 7000rpm..what a sound!!

quite looking forward to what BRB sounds like supercharger and nos an all..(rv8)

Me too Simon - quite patial to the whine of a supercharger - especially the overrun

griffman · Mar 22, 2014

lynall said:
How come a 6.3 litre v8 only makes 380 bhp, sounds kind of low to me?
Have to add I would love 380bhp!

Lynall

I have responded generally above - but I thought maybe i should explain the reasoning for me keeping my headline BHP figures relatively low.

You must have a 'horses for courses' mentality when deciding on an engine upgrade for a car.

To shift a 2-tonne square block from rest and through the air is difficult - power will not do it - torque will.

Take the Grey TVR engined 90 cabrio we built - we had a 305 bhp 4.3 litre big valve TVR race engine in to go in it - but it had no torque below 3500 rpm and revved to 6850 rpm.

Great in a 1000 kg TVR but not so clever in a 90

So when we rebuilt it we softened the cam down to a kent 218 - from the wild TVR 885 - this meant it made 30bhp less, but 40lbs more torque and MUCH lower down the rev range - now it only revs to 6000.

It has a manual gearobox and drives like a dream - 60 comes up in 7 seconds - but it is also nice to drive because it has enough torque at low revs.

For my car - with an auto box - this is even more important.

So you if build a landrover motor with torque in mind the power takes care of itself.

Thor1950 · Mar 22, 2014

griffman said:
The 6.3 engine in my car was built for torque and relaibility and not for power - with a performer RPM cam, matching intake and 800 carb it will pull 450 bhp and the same torque(450) but it will be much higher up the rev range - and not suitable for a 4x4.

It is far from standard - a 5.7 chevy with iron heads makes 250 bhp at most - but 330 lbs/ft torque.

I have edelbrock performer Ali big-valve heads, matching inlet and carb, a rollin' thunder camshaft and, forged stroker crank and rods and keith black race pistons - and more besides.

This is what she sounds like

V8 383 defender - YouTube

My engine has over 300 lbs at just above idle - dyno sheets show 400 at 2000 rpm and slow rise to 450 at 3800 and virtually no tail-off.

I did build the bottom end to cope with up to 600 bhp though - if the mood takes takes me.

With a Victor intake, mad nascar cam and two 750 double-pumpers this will be about right - I may have to have some slightly bigger-valve heads done with smaller combustion chambers, but 3 grand will get me there

As for a stock 5.8 mustang pulling 662 bhp.

1 - that is a supercharged Shelby
2 - it is undriveable
3 - ford are notoriously 'over-enthusiastic' shall we say when it comes to quoting bhp figures

Correct from factory stock

there are a lot of them on the road , and are very driveable

griffman · Mar 22, 2014

Thor1950 said:
Correct from factory stock there are a lot of them on the road , and are very driveable

The supercharged shelby mustang was 50bhp short of claimed bhp when Top Gear had it dynoed

351 Cleveland supposed to make 350 bhp - 275 max is the norm.

Only decent ford V8 engine is 351 windsor - torque monster

Shelby mustangs arenot from the factory - they go somewhere to have the leaf springs removed and upgrades done

Ford not only people to tell power porkies though - one day i will divulge how the TVR Griff 500 got 340 bhp - LOL

Shelbys are undriveable - in anything other than a straight line.

A well- driven EVO or 911 will leave it for dead on a b-road

Having said that - I do like them

zen · Mar 22, 2014

Land Rover Defender Concept 100 2012 photo 74083 pictures at high resolution

hers a idea of what i wish to do with a certain 2 door mr griffman..

abd re winsor351..av one of them.(high cr 4 bolt version).its waiting for a suitable car...

marccleave · Mar 22, 2014

zen said:
Land Rover Defender Concept 100 2012 photo 74083 pictures at high resolution

hers a idea of what i wish to do with a certain 2 door mr griffman..

abd re winsor351..av one of them.(high cr 4 bolt version).its waiting for a suitable car...

Nope I called bagsie first! You've already got 2 RRCs, you did have thrree. I've only got one. Definitely need another. :lol:

griffman · Mar 23, 2014

zen said:
Land Rover Defender Concept 100 2012 photo 74083 pictures at high resolution

hers a idea of what i wish to do with a certain 2 door mr griffman..

abd re winsor351..av one of them.(high cr 4 bolt version).its waiting for a suitable car...

likin your style Simon

not too sure about te 25-inch wheels though!!!!!!

shanecl · Mar 23, 2014

griffman said:
First was my monster 6.3 Litre 90 Overfinch rebuild, then the TVR 4.3 manual manic ' TVR griff with 4WD' car

We have commissions for several cars now - thanks for all the interest.

Half the price of a twisted - twice the fun.

The green one is the 6.3 auto Overfinch dragster - 380 bhp and 450lbs torque.

The grey one the insane 4.3 litre 275 bhp manual TVR-engined beastie.

Hi Griffman, Whats the name of the grey colour.

Dr_evil · Mar 24, 2014

Lovely looking 90 but........

griffman · Mar 24, 2014

shanecl said:
Hi Griffman, Whats the name of the grey colour.

Hi Shane

Orkney grey - landrover colour.

shanecl · Mar 24, 2014

griffman said:
Hi Shane

Orkney grey - landrover colour.

Thanks Vic.

griffman · Mar 24, 2014

shanecl said:
Thanks Vic.

Shane

Sorry mate it is Stornaway Grey

Got my Orkneys and my Hebrides
Islands mixed up.

I actually think they are the same colour
- there was no overlap

A bit lighter than Bonatti

shanecl · Mar 25, 2014

Too late it's sprayed. Lol. No worries Vic Stornaway grey it is. Was gonna go Vesuvius orange but think it's better sometimes to blend in.

Mr Noisy · Mar 25, 2014

Land rovers are better in natural, dark colours when used out in the country etc.

And that's what they're for!

griffman · Mar 26, 2014

shanecl said:
Too late it's sprayed. Lol. No worries Vic Stornaway grey it is. Was gonna go Vesuvius orange but think it's better sometimes to blend in.

Hi Shane

looking for ward to some pics when the beast is done.

Either of those greys will look grand I am sure.

Although my favourite is westminster grey - from the P38 westminster edition - you don't see it very often.

Did you ever buy the 4.6 top-hat engine from Turners?

I pushed freida hard to give you a trade discount - she only does one level - 10%

We buy loads of stuff from them - thay are very nice people though and top notch service and advice.

Good luck with the rest of the build

here we go again - chevy monster

Coming in your ears.

Coming in your ears.

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