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chrisandebreg

New Member

• Jul 4, 2011

• #1

hi i'm looking at dropping a 4.6 p38 engine into my r/r classic softdash and would like advise on the best engine build combo for the cam and if its worth high flow injectors and porting work to the 3.9 heads and inlet prior to refit. chris

 

The Mad Hat Man

Well-Known Member

LZIR Despatch Agent

• Jul 4, 2011

• #2

cant answer the Q - too many unknowns.....


do yu want to tow with it or do drag strip races?

 

300bhp/ton

Well-Known Member

• Jul 4, 2011

• #3

chrisandebreg said:

hi i'm looking at dropping a 4.6 p38 engine into my r/r classic softdash and would like advise on the best engine build combo for the cam and if its worth high flow injectors and porting work to the 3.9 heads and inlet prior to refit. chris

Click to expand...

To do what with? What sort of budget? Do you have any performance or HP aims/goals?

Auto or manual?

Any other supporting mods already done?

Is it stock gearing (diffs) and tyres?

 

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chrisandebreg

New Member

• Jul 5, 2011

• #4

tyres are 30 x9.5 r15" standard diffs soon to have airlockers will be towing camper trailer approx 1.5 tons standard auto but can change converter ect. as required, sick of slowing on hills from 100kph but I only own the old girl for off road use. chris

 

v8hotrodboy

Active Member

• Jul 5, 2011

• #5

Dont forget that the 4.6 has coil packs and not a dizzy, therefore you need to change the front timing cover for one with a dizzy drive hole and fit a drive for it (not as straight forward as it seems) or fit all the engine electrics from the P38 just to make it run. Check out this site for some good advice. Tuning the Rover V8