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10-19-2014, 02:59 PM | #26 |
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Re: are all 350 blocks the same?
Well, it just dawned on me after I read leftybass's post about the cam being the only difference, and you pulled the trigger on that 290 pretty fast like the next day. Have they shipped it yet? Maybe you could cancel.
I think you will be happy with the 290, however; it will be fun to drive. Hang in there speed. |
10-19-2014, 03:36 PM | #27 | |
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Re: are all 350 blocks the same?
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10-19-2014, 03:41 PM | #28 |
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Re: are all 350 blocks the same?
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10-19-2014, 03:49 PM | #29 |
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Re: are all 350 blocks the same?
What kind of improvement?
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10-19-2014, 04:15 PM | #30 |
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Re: are all 350 blocks the same?
You have me in great suspense! What's the cheap upgrade? I'm ready! I can take it!
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10-19-2014, 04:42 PM | #31 | |
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Re: are all 350 blocks the same?
Quote:
That big cam needs every tiny bit of compression you can add to it. You won't need any other new parts than the head gaskets themselves. |
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10-19-2014, 04:51 PM | #32 | |
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Re: are all 350 blocks the same?
Quote:
http://www.summitracing.com/search/m...5%2B4294877869 The 1094s are good for iron or aluminum heads, the 7733s are all you need for cast iron on cast iron. They hold up better than the composition gaskets and never need re-torque. Do you know how to adjust the tappets while the engine is still out of the car? Let me know if you do this and if you need any more help. |
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10-19-2014, 05:03 PM | #33 | |
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Re: are all 350 blocks the same?
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10-19-2014, 05:06 PM | #34 | |
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Re: are all 350 blocks the same?
Quote:
You are taking an engine and raising the compression .4 plus taking an engine with no effective quench and turning it into an engine with ideal quench. That means more power, better fuel efficiency, lower tailpipe emissions. Win Win |
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10-19-2014, 05:10 PM | #35 | |
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Re: are all 350 blocks the same?
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10-19-2014, 05:20 PM | #36 | |
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Re: are all 350 blocks the same?
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10-19-2014, 05:39 PM | #37 |
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Re: are all 350 blocks the same?
Bumping the compression is a great way to help that engine make more power. I did it myself by having the heads shaved and using thin head gaskets and used a 214/224 old school grind cam, but I'm trying to squeeze as much reliability and longevity out of it before an LS swap. I estimate roughly 310 hp and between 350-375 ft lbs of torque. I think that highly expensive can is there way of justifying the power increase while having a warranty. When all is said and done it's a sealed motor that "shouldn't" leak. Money well spent I bet.
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10-19-2014, 06:32 PM | #38 | |
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Re: are all 350 blocks the same?
Quote:
Obviously, I like your cam choice. Wow think what a difference a set of modern 64cc aluminum heads would make on a 290HP with that big cam that it has and the extra compression the heads would offer! Close to 100HP? I'd expect vortecs to add 60-80HP on that particular application as well. |
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10-19-2014, 07:45 PM | #39 |
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Re: are all 350 blocks the same?
I like this thread. And I have a question? Please know that I am not a trained mechanic or very experienced mechanically.
Been pulling around a toy hauler with my 70 c20. 350, turbo 350, 410 rear. I would like to have the engine rebuilt for towing (torque?). I want reliability and the ability to use 87 octane fuel. I dont want a hot rod. What would be recommended? Thanks |
10-19-2014, 08:17 PM | #40 | |
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Re: are all 350 blocks the same?
Quote:
Not accounting for the port work and using an 882 head with OS valves, according to desktop dyno (knock-free gas, ideal fuel/spark curves), the current setup with 210-210-110 crane energizer (IVO 106), I have potential to make 330HP @ 5,000 and 387 TQ @ 3500. With the 214-224-112 (IVO 108), it says I have the potential to make 345HP @ 5,500 and 384 TQ @ 4,000. If I advance the cam another 3' (IVO @ 105'), I get my 387 TQ back @ 4,000 and my HP peak of 340 @ 5,000. If you want me to desktop dyno your engine, send me your bore/stroke/head volume or CR, valve size, cam specs (I already know that), exhaust specifics, intake/carb and I'll dial you in. If your heads have been flowed, I can enter those specs as well. I did a "guesstimate" with 9:1 comp (to account for thin gaskets and head milling), 750 carb with dual plane (Q-jet?), small tube headers with mufflers and came up with a potential for 335HP @ 5,000 and 380TQ @ 4,000. Disregard where it says cam name, I'm too lazy to change it I needed a title so I gave it that but entered correct specs. I used my 882 head file, they should be close to the 624s you probably have unless they have been ported. |
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10-20-2014, 01:09 AM | #41 |
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Re: are all 350 blocks the same?
Wow... Mechanicallman that's an awesome program you have. I need to send you some info on my little 283 and see what you come up with
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10-20-2014, 01:18 AM | #42 |
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Re: are all 350 blocks the same?
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10-22-2014, 06:15 PM | #43 |
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Re: are all 350 blocks the same?
Got my engine in my shop. Trying to decide on leaving the stock valve covers or use the chrome off my old engine. Either way it's beautiful to me!
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10-22-2014, 06:21 PM | #44 |
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Re: are all 350 blocks the same?
I've got an old distributor I want to use to prime the oil pump, what do I need to do to it to use it? Or is there another way without buying a special pump prime tool? Thanks!
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10-22-2014, 06:43 PM | #45 | |
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Re: are all 350 blocks the same?
Quote:
Always use the body. You can actually pump some oil without it but it's difficult to build oil pressure as the body goes through an oil main and hard to keep the shaft on the oil shaft, and has to be there to stop a huge internal leak. |
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10-22-2014, 08:54 PM | #46 | |
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Re: are all 350 blocks the same?
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10-22-2014, 08:59 PM | #47 |
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Re: are all 350 blocks the same?
Back in the early 90's I finally put HEI in my 72 and that old points distributor got hacked!
I also took the large upper part and busted it off with a hammer then ground the edges off just to make it more compact, but had to leave the upper bushing in of course. |
10-24-2014, 10:04 PM | #48 |
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Re: are all 350 blocks the same?
Good point. How do to you set up a 350 for max. torque at the lowest rpms? This is not discussed often, you usually hear torque and HP figures at unrealistically high rpms.
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10-25-2014, 03:18 AM | #49 | |
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Re: are all 350 blocks the same?
Quote:
http://www.summitracing.com/parts/ue...make/chevrolet Healthy RV style cam http://www.summitracing.com/parts/su...make/chevrolet Delphi lifters http://www.ebay.com/itm/SBC-BBC-283-...4151e7&vxp=mtr Vortec heads with fel-pro 1094 head gaskets Vortec dual plane intake Per Desktop Dyno: With stock 2.25" outlet Ram's Horn ex manifolds and muffled dual exhaust, you will get around 382lbs @ 3,000 and 311HP @ 5,000 with a fairly flat torque curve. (356TQ @ 2,000, 368 @ 2,500, 382 @ 3,000, 380 @ 3500, 369 @ 4,000, and 353 @ 4,500). With small tube headers and muffled dual exhaust, you will get around 405lbs TQ @ 3500 and 347HP @ 5,000 with a very flat torque curve of nearly 400lbs from 2,000 to 4,500. (388TQ @ 2,000 and 395 @ 2500, 400 @ 3,000, 405 @ 3,500, 402 @ 4,000, and 390 @ 4,500). http://www.ebay.com/itm/Hedman-69010...2ea530&vxp=mtr If you are towing a lot of weight, get the headers. Either way, this will be a very docile engine that idles really smooth, very responsive, and lots of guts. It will act like a big inch stock engine in a small engine package. Headers or no headers: How much torque do you want? Headers won't make it a hot rod, and the Hedman mid-length headers don't hang down and can be spliced into an existing dual exhaust system. Ram's horns are the best production exhaust manifolds ever made for the SBC. They don't compare with headers, but are better than all other cast iron manifolds and are super reliable. However, if you use good headers, good header bolts, good header gaskets, and good high temp (red silicone) spark plug boots, you won't have to mess with them after the first bolt re-torque. If you have a/c and want headers, you will need Hooker's A/C compressor bracket it's just over 50 bucks. http://www.ebay.com/itm/Hooker-Heade...efabe5&vxp=mtr Other ways to go for extra torque that are less expensive, let me know if you need more info. |
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