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Old 02-11-2009, 07:34 PM   #1
djkyle65
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Heads for a 350 chevy

Anyone got any suggestions for good heads for a 350 bored 40 over looking for someplace that has something reasonably priced



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Old 02-11-2009, 07:39 PM   #2
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Re: Heads for a 350 chevy

Vortecs, you can't go wrong with them!
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Old 02-11-2009, 07:43 PM   #3
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Re: Heads for a 350 chevy

Ditto on the Vortecs. You will never find a better bang for the buck, EVER! You have to run a Vortec style intake which is available from every manufacturer and also centerbolt valve covers. Dont let the valve size fool you. They flow well.
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Old 02-11-2009, 07:51 PM   #4
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Re: Heads for a 350 chevy

I put a pair of Summit brand heads on my 350 in my 'burb. The day after I got back from B'ville this summer white smoke came out of the right bank, it was a cracked head. They were double humps and it was more reasonable to replace them with the Summits that find a head and have them both completely redone. I drive my 'burb daily and they seem to be working well.
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Old 02-11-2009, 08:19 PM   #5
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Re: Heads for a 350 chevy

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Vortecs, you can't go wrong with them!
X3 on the Vortecs.
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Old 02-11-2009, 08:29 PM   #6
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Re: Heads for a 350 chevy

I would go to a local engine shop and find some rebuild stock 305 heads that are 64 cc, with the largest valve they have and buy them. For about $200, you will really wake your truck up. This will bump your compression over 10:1.
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Old 02-11-2009, 08:34 PM   #7
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Re: Heads for a 350 chevy

Check Competition Products Web Site for Dart Iron heads I think you can buy them cheaper than vortecs and they are very nice . They are priced depending on what you want . The bigger and badder you want the more money you spend . You don't have to run a vortec intake either . My 2 Cents . Bob
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Old 02-11-2009, 08:52 PM   #8
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Re: Heads for a 350 chevy

I have a set of great heads for you!!!!!!


http://67-72chevytrucks.com/vboard/s...ll+block+heads
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Old 02-11-2009, 08:54 PM   #9
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Re: Heads for a 350 chevy

Maybe the best money I spent...http://store.summitracing.com/partde...5&autoview=sku
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Old 02-11-2009, 09:44 PM   #10
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Re: Heads for a 350 chevy

It depends on what you want to spend, and what is in your engine right now. I say if it is mildly hopped up go with stock 64cc 305 heads if you are on a budget. Thats what I have and I still managed to run a 13.8 sec 1/4 mile. If you have the extra money go with the world product heads, there going to be better. Just my .02
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Old 02-11-2009, 09:54 PM   #11
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Re: Heads for a 350 chevy

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Originally Posted by big_al_71 View Post
I have a set of great heads for you!!!!!!


http://67-72chevytrucks.com/vboard/s...ll+block+heads
I would not recommend these they are 76 cc.
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Old 02-11-2009, 10:28 PM   #12
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Re: Heads for a 350 chevy

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I would go to a local engine shop and find some rebuild stock 305 heads that are 64 cc, with the largest valve they have and buy them. For about $200, you will really wake your truck up. This will bump your compression over 10:1.
I would completely disagree with this one. Read my post titled Engine Run-on. I am having a huge issue with engine run-on right now on 350 with 305 heads and an rv cam. I am hoping I octane fuel will fix the issue.

I would also agree with vortec heads! All day long the best bang for your buck. And if yo don't like centerbolt heads, no worries. They have an adapter so you can run your regular side bolt valve covers. JMHO.
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Old 02-11-2009, 10:35 PM   #13
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Re: Heads for a 350 chevy

By the time you get the heads machined for screw in rocker studs, machined spring pockets for bigger springs and valves and a valve job (assuming you don't want to stick with the 1.94"/1.50") its better to go with Dart Iron Eagles. They will cost around $950 for a complete set with your spring choice and choice of valves 2.02 or 2.05 .

My car with a roller cam and these heads untouched puts down 350hp to the wheels.
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Old 02-11-2009, 11:05 PM   #14
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Re: Heads for a 350 chevy

For the record guys, 305 have heads do not have 64cc chambers. They range from 58cc - 60cc chambers. Companies like Aerohead and others enlarge the chambers with valve deshrouding cutters and make them 64cc but they come from the factory smaller. The run-on problem they are notorious for is due to a small chamber with severely shrouded valves that create excessive heat. This causes the "dieseling" effect. If the timing is kept on the low side they do perform OK on a 350, but unless I was on a shoestring budget and had them laying around, I'd go another route. I've ran them in past on 327's and 350's with pretty good results, but I wouldn't buy a set and spend money on valve job when Vortecs and others can be bought so reasonably. They actually work really well on a 307 though...
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Old 02-12-2009, 12:32 AM   #15
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Re: Heads for a 350 chevy

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Originally Posted by j_cst_10 View Post
By the time you get the heads machined for screw in rocker studs, machined spring pockets for bigger springs and valves and a valve job (assuming you don't want to stick with the 1.94"/1.50") its better to go with Dart Iron Eagles. They will cost around $950 for a complete set with your spring choice and choice of valves 2.02 or 2.05 .

My car with a roller cam and these heads untouched puts down 350hp to the wheels.
I agree !! Plus Dart are made in the USA unlike World (china ) Not saying anthing against the vortec's but bang for your buck I'd go with Dart
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Old 02-12-2009, 12:33 AM   #16
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Re: Heads for a 350 chevy

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Originally Posted by 67_C-30 View Post
For the record guys, 305 have heads do not have 64cc chambers. They range from 58cc - 60cc chambers. Companies like Aerohead and others enlarge the chambers with valve deshrouding cutters and make them 64cc but they come from the factory smaller. The run-on problem they are notorious for is due to a small chamber with severely shrouded valves that create excessive heat. This causes the "dieseling" effect. If the timing is kept on the low side they do perform OK on a 350, but unless I was on a shoestring budget and had them laying around, I'd go another route. I've ran them in past on 327's and 350's with pretty good results, but I wouldn't buy a set and spend money on valve job when Vortecs and others can be bought so reasonably. They actually work really well on a 307 though...
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Old 02-12-2009, 12:43 AM   #17
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Re: Heads for a 350 chevy

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I agree !! Plus Dart are made in the USA unlike World (china ) Not saying anthing against the vortec's but bang for your buck I'd go with Dart
I love Darts too. In fact, I'm running 215cc Iron Eagles on the 383 in my '82 Z28 drag car. However, for a daily driven street engine, I prefer the Vortecs because of the tall high-flow smaller runner intake ports and the fast burn combustion chamber. The Vortecs bone stock with 170cc intake runners with 1.94/1.50 seriously outflow the Dart S/S's and World S/R heads and give 200cc Iron Eagles and World Sportsman II's all they want up to .500" lift. Their bigger heads kill the Vortec, but Dart nor World makes a comparable sized head that will perform as well or be as efficient as the Vortec. I know that sounds crazy, but it is true. That's why I'm so high on the Vortec. Check out this chart, because I know you racer types (Bob) are gonna want proof!
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Old 02-12-2009, 12:53 AM   #18
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Re: Heads for a 350 chevy

Dart Iron Eagle all the way...
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Old 02-12-2009, 12:54 AM   #19
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Re: Heads for a 350 chevy

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I love Darts too. In fact, I'm running 215cc Iron Eagles on the 383 in my '82 Z28 drag car. However, for a daily driven street engine, I prefer the Vortecs because of the tall high-flow smaller runner intake ports and the fast burn combustion chamber. The Vortecs bone stock with 170cc intake runners with 1.94/1.50 seriously outflow the Dart S/S's and World S/R heads and give 200cc Iron Eagles and World Sportsman II's all they want up to .500" lift. Their bigger heads kill the Vortec, but Dart nor World makes a comparable sized head that will perform as well or be as efficient as the Vortec. I know that sounds crazy, but it is true. That's why I'm so high on the Vortec. Check out this chart, because I know you racer types (Bob) are gonna want proof!
I didn't need proof I was just giving my opinion I believe the vortec heads are great . I run a bigger than .500 cam and with no cam specs on his motor was just giving another option . I personally would steer clear of World because I try to buy made in the USA Parts but to each his own . Thanks for the cool spec sheet !! Bob
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Old 02-12-2009, 01:11 AM   #20
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Re: Heads for a 350 chevy

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I didn't need proof I was just giving my opinion I believe the vortec heads are great . I run a bigger than .500 cam and with no cam specs on his motor was just giving another option . I personally would steer clear of World because I try to buy made in the USA Parts but to each his own . Thanks for the cool spec sheet !! Bob
Yeah, without knowing his cam specs, gears, and what he wants out of the truck, its hard to say which would be better. If it were going to be a quick street/strip truck or weekend warrior, I too would go with 200cc Iron Eagles. You can always grow into a bigger head, and at some point you're gonna havta go faster, right?

I'm building an engine for my red '69 right now, and its going to be strictly a daily driver, but I do want more power than the 76cc headed smog 350 has that's in it now. I'm basically building a carb'd version of the GMPP Ram Jet 350. It's a going to be a 4 valve relief flattop .030" 1 piece seal 350 with Vortecs and Ram Jet hydraulic roller P/N 14097395. It is a mild, smooth idling cam but makes great torque and very good HP for what it is. This is a proven combination, and I know it will make my truck much more fun to drive. With the same heads and cam and 9.4 CR, the Ram Jet 350 is advertised at 350HP and 400ft lb. I'm going to be running an dual plane aluminum intake and Q jet with ram horns and 2.5" duals, so I won't quite make those numbers, but it will be very stout nonetheless.
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Old 02-12-2009, 08:11 AM   #21
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Re: Heads for a 350 chevy

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I would completely disagree with this one. Read my post titled Engine Run-on. I am having a huge issue with engine run-on right now on 350 with 305 heads and an rv cam. I am hoping I octane fuel will fix the issue.

I would also agree with vortec heads! All day long the best bang for your buck. And if yo don't like centerbolt heads, no worries. They have an adapter so you can run your regular side bolt valve covers. JMHO.
SHawn
This is all I have ever ran and I have never had a problem with engine run on, it will require you to adjust your timing to get the best performance. As far as screw in studs, you don't need them unless you are running a highlift cam or going full roller, I have 480 lift cam right now with press in studs, going strong for 10 years. I have always been on a tight budget and these heads have always performed very well.
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Old 02-12-2009, 08:21 AM   #22
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Re: Heads for a 350 chevy

On a mild to moderate build with less than 10 to 1 , you cannot beat the Vortec head, I have seen flow data on "worked double humps" VS. Vortec's and #'s dont lie, Vortec's win, you cannot beat the engineering in those heads without spending $1,000 + . You will as stated need a new intake manifold and some hardware
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Old 02-12-2009, 09:09 AM   #23
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Re: Heads for a 350 chevy

I am a big fan of dart, plus thumbs up on made in America, I would rather have a slower ride and keep some slub here working rather then go fast and keep some party boss in China slurping down eel eyeballs. Personally, I would buy a used set, guys are getting rid of extra go fast parts now for money to pay the rent.
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Old 02-12-2009, 09:13 AM   #24
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Re: Heads for a 350 chevy

Hard to beat the Vortecs.

Here's a link to get the kit to change over.
With Edelbrock Performer intake: http://paceperformance.com/index.asp...D&ProdID=73011
With Edelbrock Performer RPM intake: http://paceperformance.com/index.asp...D&ProdID=18329

Of course if you need everything for the top end: http://paceperformance.com/index.asp...&ProdID=219069
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Old 02-12-2009, 10:02 AM   #25
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Re: Heads for a 350 chevy

new vortech heads with a 5 angle valve job and screw in rocker studs, wich you'll need when crossing over the .500 in lift. https://www.patriot-performance.com/...ome.php?cat=76

These heads are tapped for the old andnew type intake manifold, also perimeter v/c or centerbolt v/c.
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