Swap out of silver top to black top

[jdominicd]

Gents thought I would come on here and get it from the horses mouth
I have for the last 4 years been running a ford zetec 2.0 standard engine on twin webber 45 carbs and alpha ign, which last time it was dynoed was running 158 bhp, the only addition since then is a raceline baffled sump.
Its fitted to my kit car and runs through a sierra type 9 box back to a Cortina rear axle with Quaife LSD with a 4:11 ratio.
Having raced now for the last 2 years I am now looking at upgrading however I don't know which way to go
The mileage on my sivertop is unknown although it has been reliable over the past 4 years.
I have just been given some money (which is always nice) and as far as I can see I have two options:
Stay with the silvertop and change the cams, port and polish the head and buy some ARP bolts or
Buy a crated blacktop engine and start with that , continue racing with my silvertop and over the coming year upgrade the blacktop as and when I can afford it.
The questions I have are:
1. Does my raceline sump fit the black top?
2. How much power can a standard type 9 box handle?
3. Which cams should I go for? ( looking at getting the head done, polished ported) hopefully with an end result of 185-200bhp
4. Has anyone got any bits for sale?
Cheers
John

[neiljohnson]

Sumps are different silver top has an all alloy one & black top is steel.
Pretty sure other parts are interchangeable but internally the engines are very different

[Viperz888]

Silver and blacktops are actually very different engines.
Have you considered zetec turbo? Fairly straightforward to get 300hp from one.