Welcome to our Site for MG, Triumph and Austin-Healey Car Information.


MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB GT V8 Factory Originals Technical - Head game

The 3.5-liter V8 engine produced by the Rover motor company, are aftermarket cylinder heads currently available to the mass public?
W. Lewis Smith

Better suited to large capacity.


Peter Burgess does a nice line in uprated cylinder heads. Send him yours and get back a much better pair. Whether he can supply heads without exchange, I don't know. Drop him an e-mail.

Mike Howlett

I am more interested in acquiring a cylinder head of non-Rover/factory design.
W. Lewis Smith

Get ready to open your wallet. Repco/Brabham used a version of this engine back in the sixtys with special heads for formula racing. You might find a set, but they'll probably be expensive. That's the only other head that I've ever heard of for this engine.
Bill Young

I have aluminum Buick 300 heads on my 3.9 Rover.

rick ingram

Aren't those wildcat heads like 3,000 bucks a pair or something stupid like that?


re: Buick heads....No, Justin...they aren't quite that bad...I got mine from Dan Lagraou at D&D....rick
rick ingram

I have a good set for only $2000.00 Think of all the mony you would be saving.

The 300 heads are not a good option for most 215/Rover engines, as they will drop the compression ratio quite a bit. The also create an overhang as they are designed to mate with a larger bore than the 215/Rover. Generally, this overhang is not a good thing as a part of good head design.

A big plus is the larger valves.
Jim Stuart

No no, I meant the heads from wildcat engineering in the UK. (The link that Paul posted)

Scared me there for a minute. I don't even know where that set of 300 heads are right now, almost certainly not under lock and key. Sure glad you cleared that up for me, before I had to go digging for them. ;-P (Nah! NOBODY would pay THAT much for them!)
Jim Blackwood


Correct about 1.5k and new manifolds but this is what you could end up with

I believe Frontline are using them on a 5.0L road going BV8 with 340bhp.


What the flow #'s they be on those ported heads yo!

This thread was discussed between 14/09/2003 and 22/09/2003

MG MGB GT V8 Factory Originals Technical index

This thread is from the archives. Join the live MG MGB GT V8 Factory Originals Technical BBS now