[Shop-talk] Engine swaps; 350 SBC donor cars.

John Miller jem at milleredp.com
Mon Dec 22 11:48:02 MST 2008


>> I've acquired an 87 V12 jag coupe.  I know that the V12 isn't a good 
>> engine;
>>   
>  I am VERY surprised at the number of responses that suggested swapping 
> was a good idea, that V12 is a better motor with proper maintenance and 
> if I was looking for a Jag, I would never even give a second thought to 
> a butchered one with a V8 in it.  

I would say that V12s are unique in character and maybe worth preserving 
on that basis.

Cylinder count aside, the Jag V12 is in no (NO!) way a better engine 
design than an LSn Chevy.  Even the best Jag production heads are a 
bodge with very limited HP capability.

The Jags went through several generations of electronics, etc. and until 
the last couple years they were I think pretty uniformly awful.  The 
last couple years of the V12 in the mid '90s were pretty good.

John.


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