Thread: 327 Performance options???

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IT is an 8" balancer. It will be in a 69 camaro, and I plan on putting in a muncie 4 speed

It only has 8hp in that pic LOL, including the horse in the background

Good one ! Those muncie 4 speeds hooked up to the right clutch and flywheel combination will make those 327's sing.

I recommend a 158 tooth steel flywheel with a diaphagm clutch with the raised fingers 10 1/2 inch diameter. The smaller diameter flywheel will lower the rotational mass of the flywheel which will enable that 327 to rev up quicker. And it wont hurt to get that flywheel lightened some more on the outside edges.

Is it the wide or close ratio muncie ?

Originally Posted by sanpedro

It only has 8hp in that pic LOL, including the horse in the background

And I see the corgi wants to play basketball as well !!!!

Actually thats not a bad idea using a llawnmowing tractor as a tow vehicle aroud the garage.

Originally Posted by southerner

Well the heads that he has got on that 327 are going to work a lot better than those open chamber heads that he has got sitting on the workshop floor. And those closed chamber heads produced up to 30 ft lb's of torque right across the engines rev range. If closed chambers are bad howcome world products make closed chamber SR torkers with 68 cc chambers out of cast iron ? Also all the mid sixtys small blocks made some respectable horsepower with closed chamber heads. Then along came 1971, with open chamber heads to drop the compresion ratios to reduce NOX emissions.... "Bang" all the engines right across the board lost up to 30 - 35 HP.

How come World Products makes 76 cc heads,Pro Topline,AFR etc.
If money where no object and I had to use stock heads I would rather use a 441 or a 993 and "roll" them over.
Compression is over rated.
I would rather see an efficient head with an "open chamber" than an inefficeient head with a closed chamber.
You take about the mid sixty's.
In the early 70's what kind of cylinder heads did the Ls6 have on it?

Have to check on that but I recall that they had the big rectangular port aluminium open chamber heads. Just cannot remember if if the exhaust ports were the O or the D types though.

It's up to personal choice, a small chamber with a flat top piston and minimal quench works. Flat top pistons are cheaper and there is no piston dome interfering with the flame front. World make open chamber heads along with a plethora of other manufacturers, I am aware of that, but different horses for diferent corses. I only generally use open chamber heads for low compresion engines, like when I put a blower on top of a motor.