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Old 06-22-2003, 02:30 PM
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Performance heads for a 283

Has anyone out there used the World S/R Torquer 305 heads on their 283? I am looking to upgrade from stock, and am not all that excited about the GM Performance Parts Vortec heads mainly because I just replaced my intake with an Edelbrock and don't want to buy a Vortec style manifold. Would I be better off having a port and polish done on the stock heads and leave it at that. Please don't suggest I "trade up" to a 350. I plan on being buried with my little engine that could..............

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Old 06-22-2003, 03:08 PM
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Re: Performance heads for a 283

Quote:
Originally posted by 345coupe
Has anyone out there used the World S/R Torquer 305 heads on their 283? I am looking to upgrade from stock, and am not all that excited about the GM Performance Parts Vortec heads mainly because I just replaced my intake with an Edelbrock and don't want to buy a Vortec style manifold. Would I be better off having a port and polish done on the stock heads and leave it at that. Please don't suggest I "trade up" to a 350. I plan on being buried with my little engine that could..............

The S/R Torquer heads would work fine if you ask me, and would most certainly be better than porting stock heads...
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Old 06-22-2003, 07:52 PM
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Coupe, you probably know that any boring of the 283 over 40 thou causes overheating problems so I would try to stay away from 60 over. You can help the overheating by going with after market Aluminum heads. Aluminum with 60 cc combustion chambers and big valves will make it scream, but you will loose low end torque. 'Course, you want to match your valves with your Edelbrock manifold. Performer, smaller valves, RPM, bigger valves. The 283 is a fun motor, but you can screw it up and make it a dog if you don't match the parts.

Trees
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Old 06-23-2003, 08:36 PM
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Quote:
Originally posted by trees
Coupe, you probably know that any boring of the 283 over 40 thou causes overheating problems so I would try to stay away from 60 over. You can help the overheating by going with after market Aluminum heads. Aluminum with 60 cc combustion chambers and big valves will make it scream, but you will loose low end torque. 'Course, you want to match your valves with your Edelbrock manifold. Performer, smaller valves, RPM, bigger valves. The 283 is a fun motor, but you can screw it up and make it a dog if you don't match the parts.

Trees

Coupe, you probably know that any boring of the 283 over 40 thou causes overheating problems

I wasnt aware of this poblem with 283's, I had one and the cylinders were cone shaped and my machinest said it was the "thick" block and we bored it .080 with no problems....I wouldnt recomend doing this but at the time Id rather have just bored it to fix it rather than sleeving the block, it still runs and no heating problems...(not to mention making around 425 hp with 11.2:1 CR)
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Old 06-23-2003, 09:00 PM
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I had a friend, way back when, who bored his 283 out .125 to 4" and stroked it a half inch to make a 352, with 12:1. That was a biggy back in '57.
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Old 06-23-2003, 09:58 PM
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It must have taken a lot of welding rod to increase the crank enough to get a 1/2" extra stroke !!!
Do you remember what he did for pistons and rods?
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Old 10-02-2003, 09:24 PM
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"...my machinest said it was the "thick" block and we bored it .080 with no problems...."

Any idea what year 283's have the "thick" blocks? '57-61 or 62-67 series?
I'm looking at a '63 that's bored 0.1 over and am wondering if it's a potential problem, or reason for selling.
Thanks
Ed
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Old 10-02-2003, 09:32 PM
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I have a 283 that is bored .060. No problems. It was sonic checked......good to .125 but I saved some for later.

I have bored them .125 with no problems.

Mine is a 1957 date code.

It is my understanding that the 57 to 61 283's will go .125 most of the time. The 62 up are a thinner wall casting and should be bored no more than .060.


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Old 10-03-2003, 07:36 PM
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The 327 had some very good HiPo heads that would flow all that your 283 is capable of. They are still plentiful and a lot cheaper than after market. Don't over carb it and it should run just fine. Good Luck..
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Old 10-03-2003, 08:40 PM
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I would be willing to bet that large valve heads will not fit the 283 small bore due to clearance issues. I mean 2.02 and 1.6, but I have never tryed it. Maybe someone has tryed this...... Even if they will will work, you will not see the flow potential due to severe shrouding of the valves since they will be right up against the cylinder wall. 1.94 and 1.5 will flow all that 283 could ever need. For that matter a set of camel humps would make nice pieces for the 283.

Chris
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Old 02-16-2006, 11:41 AM
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I've run 2.02 heads on a 283 bored .125 for a 4" bore. Early fulie heads (57) were 1.94s. This makes a nice engine like the 5.0 Mustang was for years.
Some of the early 327 2bolts were identical to the 283s except the bore and crank.
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Old 02-16-2006, 11:57 AM
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my 283 is .60 over and i was looking at these heads,the s/r's,but came across a set of vortecs for 250,coulndnt pass them up.the s/r's would be a good choice if you dont want to swap intakes. i left the valves at 1.94 and 1.5, plenty of flow.
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Old 02-16-2006, 12:56 PM
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Quote:
Originally Posted by elocke
"...my machinest said it was the "thick" block and we bored it .080 with no problems...."

Any idea what year 283's have the "thick" blocks? '57-61 or 62-67 series?
I'm looking at a '63 that's bored 0.1 over and am wondering if it's a potential problem, or reason for selling.
Thanks
Ed
if i can remember right... i think i heard that the impala and truck blocks were the thick ones. the belair/nova ones were standard ones. i scored a 283 from a 61 impala with plenty of potential from a old school hotroders stand point. he told me that i could take it to .120 over no problem. and with the vortecs i scored for $120, it would scream...
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Old 02-16-2006, 11:06 PM
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Jess,
Did we both score 283s,from 61 impalas,from LAG John
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Old 02-17-2006, 10:57 AM
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from all that ive read, only 1957 283 blocks were thin walled castings. the manufacturer of the block realized mold shifting and corrected the problem for the 1958 model year by increasing cylinder wall thickness.

i have a 283 block from a 57 Bel Air (no side mounts) bored .060 over sitting in my yard. i cant give the thing away, same for the pistons. when i tore the motor down, internally it looked to have had less than 1000 miles on the rebuild.

Dale
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