[DeTomaso] Questions on 4v heads

Bill Lewis lotus0005 at hotmail.com
Sun Oct 24 16:49:09 EDT 2010


Dang, JDeRyke - what sage advice!!!!!  Have your cake and eat it too!!!





> From: JDeRyke at aol.com
> Date: Sun, 24 Oct 2010 14:56:24 -0400
> To: rob at dumoulins.net; detomaso at realbig.com
> Subject: Re: [DeTomaso] Questions on 4v heads
> 
> In a message dated 10/24/10 6:51:24 AM, rob at dumoulins.net writes:
> 
> 
> > Tony stated that I would be better off with 2V heads and a different 
> > manifold so I could get better port velocity. He stated I might be able to get 
> > an other 100 HP with the right heads/intake/carb setup.
> > 
> > Any of you ever heard of Tony?
> > Do you guys agree with what he said?
> > Can I get notable improvement installing the port stuffers?
> > 
> Never met the man, but Tony seems to know what he's talking about. Vendor 
> Larry Stock of PPC-Carson City runs Aussie 2V heads on his Silver State 
> street Pantera, with lots of other engine work but no stroker crank, and it 
> dynoed at roughly 400 bhp. Intake port stuffers may help but really, adding speed 
> parts to an unmolested 40-year-old engine is just asking for big trouble. 
> For instance, your 'smoke at start-up' may be ring wear or valve guide wear; 
> as-stock the heads had no real valve guide seals and what they did get often 
> affects the life of the oil pump-and bearings. I've seen many guys with 
> stone-stockers bolt on advertised power-adders and blow 'important' parts right 
> out of the blocks. 
> Buy yourself a spare 351-C and do a complete rebuild done on it, with 
> carefully selected speed parts, while you simultaneously enjoy the car as-is 
> until the replacement is ready. Expect to spend maybe $5000 for more power in 
> your 'new' motor. Chassis upgrades will be a good idea, too; Larry's car has 
> seen 182 mph..... My best guess- J DeRyke
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