hi, after reading nearly all postings about 327s and 331s around here, i slowly start to make up my own poject. Right now i am running a 67 327/275 with headers, original intake and an rochester quadrajet carb.
I plan to get it bored .030 over, new pistons, bearings and rings, staying with the 10:1 compr. ratio., adding a street demon 650cfm sitting on a RPM performer intake. a 270H magnum or a XE 274 will go inside as well. the only thing I am still not sure about are the (64cc 202 160) heads. should i go with vortecs, iron eagles or with sportsmanII? DD shows similar results with all of these heads.. i have a budget on this, so aluminium heads are not an option for me.
i run a 4-speed saginaw and a 4.11 10-bolt rearend with 255 radials. the car will not be a daily driver, just a weekend fun-ride. so performace will be a little more important for me than drivability.
by the way, i thank everyone for giving me that much input by now!

alex



[This message has been edited by Alex_67 (edited 10-07-2002).]

before selecting a cylinder head, you might want to make a decision on a camshaft. The two grinds you mentioned are pretty different from one another... not only is the one a split patterned cam, but one is a bit longer duration cam than the other.

The Magnum 270 cam that you mentioned would be a good cam for power up to around 6000rpm and would still make some fairly good low end torque. The XE274 will probably give peak horsepower around 6500rpm and peak torque around 4500rpm. It may not be an issue with the 4 speed though I suppose. You might also want to look into a small solid lifter cam if you don't mind periodic valve lashing.

Back to the heads... The Iron Eagle heads have a better exhaust port than either the Sportsman 2 heads or the Vortecs. The Vortecs may also require some machining for bigger springs and the addition of screw in rocker studs. The dedicated intake manifold also costs a little more, as do the self-aligning rockers... so the price starts to add up. I have also heard that the Sportsman heads sometimes seem to cause excessive oil consumption. Another head to look at would be the Pro Topline "Pro Lightning" iron heads. I am running the aluminum version (180cc intake runner, 2.02/1.60 valves) and the flow numbers are very good. They are comprably priced to the Sportsmans and Darts.

thanks for the infos...i am still new in rebuilding an V8.
so i think i will go with the iron eagles for that.
can someone tell me the differences in using a dual and a single plane manifold? what will be "the price to pay" for the extra horses a single plane intake is giving?
i am still not sure about the cam, even if i should decide that first. i did read so much about cams the last weeks, i think my brain needs a break on that, before making a final plan...

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67 std/dlx (http://www.camaros.net/cgi-bin/xchange/xchange.cgi?search_and_display_db_button=on&db_id=411&exact_match=on&photo_size=full) coupe L-30/M-20, bolero red/parchment, project

a single plane intake manifold is generally meant for an engine that will be working at a higher rpm. If you want your 327 to make big power from 3000rpm on up, a single plane will do it. A dual plane generally makes more torque at a lower rpm. So, with a dual plane, you may start making power at 1500rpm instead of 3000.

All of this is just the general idea though. Some combos can end up very different than what I just said above.

For a street car such as you are talking about, I would probably say go with the dual plane intake like the Edelbrock Performer RPM intake. With the smaller 327 and possibly a long duration camshaft, you will be a little shorter on low end torque anyway, and a dual plane intake might help make up for the loss.

As proven by the General, a 327 can make great power with a 170 or so cc intake port head!!!

The old -461x's were like 170 or so...

Please don't over port the little bugger b/c you will give up too much low end, imho...

And I bet a 282S will do you great as will an E-brock RPM or Holley 300-36 intake and a 3310-1, -2 or -3 if set up for your cubes!!! And don't forget a good set of 1.625" four tube, long headers...

pdq67

Put the old 327/350 horse cam in it and hold on. A barrell of run with vortec heads. smooth the ridge out under the exhaust on vortecs. You wont even have to cut the guilds but you may want the z28 springs. Dont worry about screw in studs, get the self alining rockers. Proven 375-400 horse 327 that will scream with around 11-1 compression. Dont worry the cam has enough duration to bleed it off and it needs at least 10.5 to 1. You can also say that you are running all stock GM parts. Dont read into the RPM range either. 6300 is a good shift point. Dont cheap out on the lifters you need a good design to run at high RPM. A true 66 nova ran 12.2 with slicks and a 4 speed with 3.73's but he shifted at 7000 with this combo. You have to clean the vortecs up though its like 20-30 horse.... Man I love my little small blocks. This car ran wild on 3/4 of the big block cars and beat everyone on the street cause the low end isnt great so it doesnt spin bad.... Build it and hang on.... Fun as H*ll

I'm sorry, I'm so stuck on solids that I flat forgot about the great old 350hp/327, -151 hydraulic cam.

I had one in my 350 and loved it. But my junk 301 with the little -097 Duntov solid was more fun to rpm!!! pdq67

Yes if they made that solid cam in reproduction it would be the ticket. Try isky or some other solid cam manufactor. Im really sorry if I mislead you on the vortecs. I too was going to buy these heads but I now have a pricing guild that includes everything
446 for the heads
40 for springs
41 for the valve covers
20 for valve cover bolts
20 valve cover gasket.(its not the same)
20 intake gaskets
50 bucks over the plane RPM for the vortec
18 intake bolts
+ the machine work on the exhaust to make them flow like a dart head
+ the the machining on the guilds so they allow high lift cams
So all in all they are great for Mild cams that dont require new springs or guild mods. but when you add it all up thats 655+ any porting and valve guild stuff that could easly add 150 at the low end which is only 20 bucks away from Pro lighting heads. Just some thoughts????

Moe, got that, thanks, also to pdq67. So, if i understand right, with the cam (http://www.yearone.com/serverfiles/part.asp?pid=SB34CL&c=0&e=0&cat=8&hid=813AC11729) a little increase in compression ratio would be a good thing. what would be the best way to do that? The heads (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=2174&pid=89535)i found here. I try to find things assembled where possilble, as it is a bit a challange to get needed parts fast and cheap in europe...
Where is the best place to find assembled pro lighting heads? And if i go the solid cam way, what else must be changed according to this?
Thanks so much!
Alex

[This message has been edited by Alex_67 (edited 10-08-2002).]

Alex,

I would give Summit Racing Equippment a call. Their number is 1-800-230-3030. They have a great parts catalog and they will send you a copy of it. You could get the Pro Lightning heads there for around $800 assembled I believe.

Try Competition Products for both the heads and the cam. I bet you may be able to save some bucks??

And the Elgin cam is the same cam... pdq67

PA., Mine cost me $18 wholesale back in the spring of '67 and my buddy, Nuts put it in for the grin on my face... Later, we drank a 12 pack a "pop"...

Ok you cant use vortec heads with a solid without another 50 bucks in mods so I think the vortecs are out of the question if yo u are going to use a solid. The only cam you would need more compression with is the old 327/250 horse cam. the pro topline heads are sold by summit and the company themselves. I think it is protopline.com Shipping might bite ya... 327 really does need a solid cam to do what it is designed to do. 282S is a good one from comp, z25/27 is a good one from isky but that is really all the ones that really fit. Im not fermillar with crower but they too make solid cams.

Sure you can run a solid if you want to run the little -097 Duntov due to it's low stock lift!! And just grind the two feeler gages down narrow so they can go between the valve guide things on the rockers if you use them..

And even being small, the little bugger will still flat get down the road!!! Been there, done that!!!

Don't forget the old 340hp/360hp/327 engines!!!pdq67

Have people tried the feeler guage thing? I was wondering if that would work.

Thank you guys for the input. pdq67, i read i think houndreds of your postings, i find it that cool, how you hang with the 327s, duntov cams and stuff like that.
I am still not really sure about the cam. well, winter will be long, i have some time to make decisions. i think about valve adjusting with the mechanical lifters. on the other hand, i don´t drive that much around with the camaro...

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67 std/dlx (http://www.camaros.net/cgi-bin/xchange/xchange.cgi?search_and_display_db_button=on&db_id=411&exact_match=on&photo_size=full) coupe L-30/M-20, bolero red/parchment, project

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[This message has been edited by Alex_67 (edited 10-10-2002).]

wow!! played around with desktop dyno, and i entered the following:

327 .030over
prolightning steel 180
11.00 comp. ratio
750 4brl. on a single plane
large tube headers w. mufflers
and the isky z27 solid cam

..the thing came up with 501hp@6500 and 436lb@5500 !
but, can one drive that beast??

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67 std/dlx (http://www.camaros.net/cgi-bin/xchange/xchange.cgi?search_and_display_db_button=on&db_id=411&exact_match=on&photo_size=full) coupe L-30/M-20, bolero red/parchment, project

Hey Alex67,

Those are some impressive numbers from DD2k. However, I think they're a little optimistic.

That combo should scream like a banshee above 3000RPM. However, it may not be any fun on the street at lower RPMs. Also, you may be limited to racing fuel to control the pinging.

I think you have found an excellent set of heads in the Prolightning 180's. I would just bring the compression down to a max of 10:1 and run a small solid cam. Perhaps that way your 327 could be more "street friendly".

Just my .02

Regards,
Mark P.

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69 Camaro Coup-My Granny bought new in 1969!
Cortez Silver/drk blue interior
327/210hp
Dual exhaust with Turbo Muffs
Now with Pertronix Electronic ignition!
Powerglide trans.
Ugly & skinny tires!
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Search TV Christian Ministry: www.searchtv.org (http://www.searchtv.org)

[This message has been edited by Granny's 69 (edited 10-10-2002).]

Thanks, Alex...
I'm not saying that the old stuff is by any means better then the new stuff, but rather the old stuff still works good in its intended operating perimeters!!!

You know old Multiple-Billion Dollar GM couldn't ta been that far off for making the stuff they did back in the days before the smog police!!! And the stuff just seem ta run a long time unless beat on til it broke!! And that was generally what happened to the little Z-28 engine!!!pdq67

I use the 492 old angle plugs heads on my bracket car 67ss I use the comp cam 292Hyd.
with an open plenum manifold. She runs 12.69 at 108 so far only three trips to the track.

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ssvette
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