Speed Six Rebuild: Power 4.3 or 4.5?

Speed Six Rebuild: Power 4.3 or 4.5?

Author
Discussion

Incognegro

1,560 posts

132 months

Wednesday 29th April 2015
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More useful info, can a 3.9 diff setup be ported to a cerbera with the same results? Could be me going back to Power and asking for the most cost effective way to get 400 genuine bhp. I'm thinking that would be speccing the standard 4.0 to S with larger injectors and a bespoke map??

Wonder how that will effect the bank balance?

tail slide

2,168 posts

246 months

Tuesday 31st May 2016
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Thought I'd post that for info my STR8SIX 4.2 engine (virtually same as 4.3) has now covered 30k miles inc competition and many trackdays, still sweet as a nut and suitably rampant power right up to 7k. smile

Raffaele

70 posts

27 months

Thursday 11th January
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I would like to know if the rebuilt 4.0 engines have 360 hp or are they more powerful?

Don1

15,936 posts

207 months

Thursday 11th January
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A good 4.0 will be sub 400bhp, you need to work on the breathing to go above that figure.

glow worm

5,798 posts

226 months

Thursday 11th January
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Don1 said:
A good 4.0 will be sub 400bhp, you need to work on the breathing to go above that figure.
A long way below 400 bhp , I think mouth to mouth would be required smile .

s6boy

1,613 posts

224 months

Friday 12th January
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If longevity and drivability were taken out of the equation it would be interesting what could be extracted.