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Old 12-15-2013, 08:01 PM   #1
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383 stroker

Hi I new too camarozone cant find out how to post a pictrue yet but anyways I have an 89 RS with a 305. I got a four bolt main 350 that I plan on stroking, my question is I have some heads in the shop with the casting number 624 and its 76cc and the heads will have 2.02 valves will these heads work any good?
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Old 12-15-2013, 08:06 PM   #2
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I'd get some aluminum heads and pump out the compression.
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Old 12-15-2013, 08:18 PM   #3
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I have some heads in the shop with the casting number 624 and its 76cc and the heads will have 2.02 valves will these heads work any good?
Welcome!

Those heads are less then mediocre at best...76cc chambers are good if you want to run cheap pump gas with no efficiency...in other words, not performers by any means...
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Old 12-15-2013, 08:22 PM   #4
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Yeah I'd love to get some but those will have to wait do too money. I plan on putting pop up pistons in too help the compression tho, and ive found some stroker kits on RPMmachines.com for like $800 fully balanced but thats with a cast crank.
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Old 12-15-2013, 08:51 PM   #5
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The recluse, how much HP do you think I can pull out with this head then I gotta run them tell I can get some aftermart ones, I kinda like the dart pro 1 with 200cc runners 64cc chanbers and same 2.02 valves
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Old 12-15-2013, 10:52 PM   #6
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Yeah I'd love to get some but those will have to wait do too money. I plan on putting pop up pistons in too help the compression...
Save your money and get what you need... that whole combo with those heads would be like flushing a crap load of money down the drain...the cash spent on investing in pistons would be better spent on upgrading heads...you will be stuck with those heads if you install "pop up" pistons...

However, if you need reman'd heads you can always go one of these routes here:

GM Cylinder Heads | Cylinder Heads
National Head

There is another one somebody else I know got some heads from, but I can't remember them off the top of my head right now...

Anywho, they are stock rebuilt replacements, BUT they have been thoroughly gone through with new valves, springs, and such...if you are going to waste money on something, you might as well blow $300-$400 on a set of redone heads, then buying worn out heads and spending twice that on machining useless junk...search for the cast numbers you want and order them redone...

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The recluse, how much HP do you think I can pull out with this head then I gotta run them tell I can get some aftermart ones, I kinda like the dart pro 1 with 200cc runners 64cc chanbers and same 2.02 valves
To tell you how much power is impossible without knowing cam, lifter, and intake scenario's...but I can tell you this...that head SUCKS for pulling any power..it's the old smog design from the 70's...if you were boosting that motor, maybe, but otherwise, meh...too many cons to tell you why...

To get an engine and spend money on making something "work" now, only to spend even more money to make it what you wanted is not good...not to mention the amount of wrench time to go back and "fix it"...nah, not me...
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Old 12-16-2013, 01:24 AM   #7
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Originally Posted by keela View Post
Yeah I'd love to get some but those will have to wait do too money. I plan on putting pop up pistons in too help the compression tho, and ive found some stroker kits on RPMmachines.com for like $800 fully balanced but thats with a cast crank.
There's nothing wrong with using a cast crank. I have a Scat cast crank and its rated for 700 hp and it cost less than $300. Yes, a forged crank is better but if you're not building a race engine a cast crank is fine for money.
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Old 12-16-2013, 12:57 PM   #8
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[QUOTE="383 Stroker;571845"]

There's nothing wrong with using a cast crank. I have a Scat cast crank and its rated for 700 hp and it cost less than $300. Yes, a forged crank is better but if you're not building a race engine a cast crank is fine for money.

I wanna pull as much power as I can. I will take my time on this engine. It just still on the dtawing broad right now. If you dont mind what cam did you use?
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Old 12-17-2013, 12:08 AM   #9
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I wanna pull as much power as I can. I will take my time on this engine. It just still on the dtawing broad right now. If you dont mind what cam did you use?
That is not the right question...the right question is "What is your budget?"
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Old 12-17-2013, 12:11 AM   #10
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My car is in the overhaul process too. It'll take years to finish. I'm redoing everything. I purchased a Lunati hydraulic roller cam. I don't remember the lift. I can get it if you want.
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Old 12-17-2013, 09:58 AM   #11
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Yeah sure, ive seen a few of the comp cams kits im thinking of going with but thatd if I still go with the same heads
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Old 12-18-2013, 07:21 PM   #12
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Yeah sure, ive seen a few of the comp cams kits im thinking of going with but thatd if I still go with the same heads
I have a Lunati 60121 hydraulic roller cam.
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Old 12-18-2013, 07:25 PM   #13
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I have a Lunati 60121 hydraulic roller cam.

This one??
http://bit.ly/1cRTsdE
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Old 12-18-2013, 09:39 PM   #14
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I like that. This are the.ones I was looking at cl12-246-3 and sk12-242-2 id go with a little bigger lift if I had screw in studs
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Old 12-18-2013, 11:28 PM   #15
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That's it. 60121 is the old part number.
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