Power output 4.6?

nickm · Post by **nickm** » Thu Jun 26, 2008 11:57 am

Could anyone give me an idea of the power I could expect from my 4.6?It has JE ported heads with larger[medium size] valves,piper270,weber 500,10.5cr.Thanks,Nick.

kiwicar · Post by **kiwicar** » Thu Jun 26, 2008 12:11 pm

At a guess,
230 to 260 real bhp
250 to 290 US bhp
330 to 370 TVR BHP
and well over 350 -400 in the pub depending how many pints you have had

Mike

ChrisJC · Post by **ChrisJC** » Thu Jun 26, 2008 1:40 pm

chodjinn · Post by **chodjinn** » Thu Jun 26, 2008 2:20 pm

sh!t mike you wrote pretty much what I was gonna say before reading you're post lol!

need4speed · Post by **need4speed** » Thu Jun 26, 2008 2:32 pm

I would be thinking more towards 260 than 230 with that spec....

ChrisJC · Post by **ChrisJC** » Thu Jun 26, 2008 3:27 pm

The standard 4.6 in a Range Rover was 225bhp.

Chris.

nickm · Post by **nickm** » Thu Jun 26, 2008 4:45 pm

Should be enough for my Westfield anyway

kiwicar · Post by **kiwicar** » Thu Jun 26, 2008 6:28 pm

a 4.6 in a westie should keep you entertained for quite a while!

Just drive it for a while before you take it out in the rain. And gear it nice and high or you will never get it moveng in first.
Mike

Post by **Rossco** » Thu Jun 26, 2008 9:06 pm

The cam is the real weak point in your setup.

It's a lightweight car with a good carb, good heads and excellent compression ratio. A wilder cam would have seen you on the 300bhp mark with almost no noticeable low speed issues.....but anyhow who drives a westie at 'low' speed ?

TVRleigh · Post by **TVRleigh** » Fri Jun 27, 2008 9:40 am

kiwicar wrote:At a guess,
230 to 260 real bhp
250 to 290 US bhp
330 to 370 TVR BHP
and well over 350 -400 in the pub depending how many pints you have had
Mike

A little harsh,
TVR Claim 320 for the 5.0 and I have seen a few on the rollers at 290 - 300 and these was std cars.
My 400SE std at the time and 15 years old was 240 on a RR. 265 TVR figures.

so they do some turning work on the cars, its not just put in a std lump and lie.

I not a complete FAN boy and know they have some faults and do have slightly high claims but its normanly only about 10%

You knew you would get at least 1 bite.

chodjinn · Post by **chodjinn** » Fri Jun 27, 2008 11:07 am

TVR claimed 340bhp for the 5 litre Griffths. I've never seen a standard one beat 300bhp.

I'm not starting an arguement before you get all angsty, because I bloody love TVRs and want to own one, but their power figures are well known and well proven to be utter shite for the majority of cases, in relation to the Rover V8 especially.