Cylinder heads..How much of a difference?

[faiz]

hey guys!
I know everyone always says cylinder heads make a huge difference but how much of a difference?
I have a 1776 with an Engle 110 cam, twin 40 webers and standard heads which have been cut for the larger pistons.
if i fit a pair of C.B. 044 Super Magnum Dual Spring Heads with 40mm x 35.5mm valves how much of a difference would it make to the performance?
how much of a difference would i actually feel?
I tried to search but I didnt find anything very specific.
I want more power but I drive my car every day to work so it cant be too big! would like a nice 1776 with as much reliable power as possible.
any help would be greatly appreciated!
Thanks guys!

[Jengel451]

you'll get a huge amount of answers and opinions.

It all depends on everything that's connected to them. Short answer, heads are worth the money, but you better start looking at the whole package, everytime you start adding power or stress to a component, start looking downstream to see what the weak link is. Fix sthat and then you now have a new weak link etc etc
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[DarthWeber]

DO IT! You'll kick yourself for not installing them on your original build. Your 2/3 of the way there. Like Jengel said, it's the whole package. You got the displacement, you got the cam, you got the carbs. Add those heads and a 1 1/2" header and finish it. Where you are now, it's like they say, you're running a foot race while breathing thru a straw. Will you feel a difference - YES! The butt dyno will feel it. You'll be able to really experience what the cam can do. Your carbs will play the Weber concerto in A Sharp. Your engine will feel like it has an extra 3000 rpm.......shall I go on?

[77charger]

When i built my 1914 for my sandrail i wanted to save some money so i passed on the ported heads.I needed new heads and still got the 40x35s but no porting also went with 44 idfs.I am using the 110 cam too.Motor worked better over my 1776 but with a new 4 seater i needed more power.

Bottom line i just had the heads ported i spent anther 430 bucks to get that done(would have have not cost that much then).I have only driven down the street with it and the difference is big that motor wakes up at 3k(still strong below too) and doesnt stop pulling.Its a close ratio gear box and 1300 pound car so it pulled to 6500 easily and fast vs where it use to drop off at 5k.

I built this motor with all the stuff to make power at upper rpm solid shafts,c/w crank,lightened f/w,but killed it with regular heads.When i take motor apart this summer i am swapping cam and going with a vz25 or 30.
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[jeff denham]

you already know how a simply light switch works ON! off. well there ya go. JD.
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[A.J.Sims]

Unless you plan to change the size (step up to 94mm) i would keep it at 35x32.

A nice ported set of 35x32mm heads will suport close to 120hp and have somthing callled,,,,,,,,air speed!

I would change out the cam!
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[Jengel451]

[jeff denham]

or you could cram it down the engines throat with one of them there hairdryer contraptions then the head work thing is thrown out the window to a certain point. but thats to easy. JD.
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[SRP1]

My favorite old saying "Heads you win"
That simply means the heads that will make your combo the most efficient it can be is the correct choice, and putting money into a good set of heads pays back in performance when chosen correctly.
With the specs you posted, I'd say do it.

[NOTAHONDA]

I have the same exact motor set up and was wondering the same thing. Thanks for asking

[A.J.Sims]

[faiz]

I forgot to add I do have an a1 1&1/2 inch header.as for the rest of the engine it's got standard rods,an electric fuel pump, a standard 69mm crank and some bolt on rockers.I think the rockers are 1.1:1. So you guys think I'll feel a big difference?!I wish I knew someone else with a high performAnce vw so I could feel it.