View Full Version : 327 Heads on a 350?(And other Engine Build ?'s)


BellzToll
Aug 1st, 05, 11:04 AM
Hi all,
Finally got in the garage this weekend after the heat calmed down. working in a garage that is 117 degrees wasnt my idea of a good time. So , I finished ripping the 350 apart last nite and am wondering where to go with it now.
First off, I got a set of heads for free. They are casting number 3782461, which by research came off a 60's model Vette 327. I am not sure of the valve sizing, as there were two sizes used; 2.02/1.60 or 1.94/1.5, but I will find that out this afternoon.
My questions on that matter:
1. Are they worth saving or should I just bite the bullet and get a good set of aftermarket
2. Will the setup work on a 350. The bores on a 327 are the same as a 350, so I would think they would bolt up and work. My main concern is if it will drag the performance of the engine down. I am planning on building the engine into a stroker, and want it to make more power and not less.

Enough with the heads, moving on to buildup itself.
I discovered, to my dismay, that the engine is a 2 bolt main, as opposed to a 4 bolt that I was hoping for. Is it still possible to build power and have it stay together with a two bolt, or should I buy the Milodon kit and convert it to 4?
The next question would be manifold selection. I have in my possession an Edlebrock Torker(not a Torker II) that again was given to me. The more I read, the more I am thinking that the manifold is not what I am looking for. I am looking something that screams from Off Idle to around 5,000-6,000 if possible. I am not planning to race alot, although I do plan on making a pass at the strip once in a while. What do you think.
By the way , the engine is a 350, .030 over, 2 Bolt main
Pics will be posted on Yahoo! soon
Thanks all,

TJS69
Aug 1st, 05, 12:30 PM
The heads would work, but look at the ends, No accessory holes. The heads may have come off a vette, but they were installed in many other cars also. You would be better off using Vortec's. Yes, I use the same heads, but they came on the car. I wish I would have used different. A 2 bolt block is still good up to about 7000 RPM.

greg moreira
Aug 1st, 05, 01:58 PM
As far as the 2 bolt VS 4 bolt issue, it really depends on rpm and cylinder pressures. If ya think about it, the pistons are trying to basically throw the crank out of the bottom of the engine due to combustion and cylinder pressures..... The mains are what keep the crank from being thrown through the oil pan so lots of rpm, lots of reciprocating weight, and lots of cylinder pressure are all things that can hurt. With your goal of about 5000-6000rpm, if you went with a half descent(lighter than typical stock) rods and pistons without massive compression or anything(Around 10:1 for a nice street motor), I see no problems with the two bolt in a small block as long as you use good fasteners and put it together well.

As far as the heads, the 2.02 vette heads were the hot ticket in the heyday. So as far as stock cast heads go, aside from a few newer stock heads(like the vortecs), those heads were the better performers........but........they are still 40 years behind what you can buy now. Even stock vortec heads will outperform those all around and it only gets better if you shell out some dough on some good aftermarket heads. But if your on a budget and just cant afford new heads, at least you know youve got one of the better stock castings.....but trust me you can do better. As far as an intake manifold, a performer rpm sounds right up your alley. Some may tell you that a performer is better for off idle and midrange power, but really, if there is a difference, its so minimal that you cant really feel it from the performer to the performer rpm at low speeds......but once the rpm starts climing a bit above idle and getting into the powerband.....you can feel the rpm come on stronger. Its just a better all around manifold.

JimM
Aug 1st, 05, 05:52 PM
no accessory holes in the ends of the heads will be a big problem on a long water pump 69.

Ditto on the perf rpm, they work great in just about anything.

DOUG G
Aug 2nd, 05, 06:07 AM
First off, 2 bolts are said to be good till 500-550hp.

Second,Torker intake is ok but you'll lose some low end grunt, I am running one right now.
With 2.73's or 3.73's and radials...anything below 40mph w/ 2.73's or 30mph w/ 3.73's it was all smoke. 2.73's, radials,mild 406 would 2.0 60' all day if carefull, and ran a best of 13.5 @ 102 using first and second only. So much for the low end theory.

Third, with the right heads,and cam the torker will be fine...406,10.17:1,6500rpm and pulling.

Fourth, 90% or so of the aftermarket heads on the market will out perform 30 some year odd old heads fully ported and polished compared to aftermarket out of the box.

BellzToll
Aug 2nd, 05, 12:57 PM
Thanks guys, you are always a help.
Just need to find some time to get out there and play with it. If I have time, I have no money, and vice versa. Catch 22 if there ever was one.
I am gonna save the $$ and get me a set of good flowing after market heads, new intake and cam. The pistons look good so I am keeping them , but I am thinking that the crank needs turned, I am taking it to the machine shop next week, we'll see the verdict I guess.