WORKING ON ROLLER ROCKERS FOR THE SERIES 1 - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 01-10-2004, 11:07 PM   #31
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Quote:
Originally Posted by willwren
Finding a Series 1 pulley under 2" might be a trick too. Having one custom made (if it'* even possible) could cost upwards of 5 or 6 HUNDRED dollars. I design mechanical hardware on an almost daily basis, and know what these things can run.

PB has a 2" pulley, but that'* only for those with EXTREME mods, and an intercooler is a necessity first.
I got connections... ...My dad worked as a machinist at a shop here for a decade or so, and the bossman there has known me since I was a baby practically. He'll let me do anything for the cost of material, even let my dad and I go in and machine it ourselves. He has great respect for us...

If I can come up with something that produces awesome gains at a fraction of the cost for everyone, that would be cool, eh??
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Old 01-10-2004, 11:45 PM   #32
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i was kinda curious about your intercooler you are making. you said like -150*
what are thinking of using in the system to do that?
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Old 01-11-2004, 12:08 AM   #33
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Quote:
Originally Posted by TrueWildMan
Quote:
Originally Posted by willwren
Finding a Series 1 pulley under 2" might be a trick too. Having one custom made (if it'* even possible) could cost upwards of 5 or 6 HUNDRED dollars. I design mechanical hardware on an almost daily basis, and know what these things can run.

PB has a 2" pulley, but that'* only for those with EXTREME mods, and an intercooler is a necessity first.
I got connections... ...My dad worked as a machinist at a shop here for a decade or so, and the bossman there has known me since I was a baby practically. He'll let me do anything for the cost of material, even let my dad and I go in and machine it ourselves. He has great respect for us...

If I can come up with something that produces awesome gains at a fraction of the cost for everyone, that would be cool, eh??

Could you make us rockers? I know Me, you, and Probably Allmachtige would be interested, many more too, Possibly Bonnie94sse.....

build 5 sets, 5x12=60 rockers?
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Old 01-11-2004, 03:14 AM   #34
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Quote:
Originally Posted by jeffrey10x2
i was kinda curious about your intercooler you are making. you said like -150*
what are thinking of using in the system to do that?
That'* at a hypothetical stage right now. Nitro-methane gas, something like that. Preferably something that is a little more stable, though, heheh...

Quote:
Originally Posted by BonneMeMN
Could you make us rockers? I know Me, you, and Probably Allmachtige would be interested, many more too, Possibly Bonnie94sse.....

build 5 sets, 5x12=60 rockers?
Why would I need to make them? Doesn't someone make them already?
Their'* would be at a mass-production price, which would be only a little more than the cost to make them. I don't know as that would be very efficient...
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Old 01-11-2004, 01:06 PM   #35
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Quote:
Originally Posted by jeffrey10x2
the roller tip is a very small gain will not be noticable. i was looking into full roller rockers due to the fact i have a 92 with 3/8" studs. 93-94 can go with small block ford 1.6 or 1.7 pedestal rockers because they are a true pedestal mount like the 93-95 3.8 and also use 5/16" bolts. you just need to use custom length pushrods. with all the porting in the world, you still will be limited with your cam. a stock cam opens the intake valve a total of .403" and from the time it open till it closes is 181 degrees of crank rotation.
with the cam i had reground. it opens a total of .478" and 218 degrees of crank rotation.
think of it this way ok. take a bucket and put it in your sink. first turn the water on 3/4 of the way and for 1 min. and measure it. next, do the same but turn it on full and for 1 min 30 secs. which will have the most water in the bucket. this goes hand in hand with how lift and duration builds power in a motor.
Obviously you are going to get greater results with a cam with more lift and duration then just rockers, because rockers mainly add lift, and add just a little duration. Higher ratio rockers will still provide a significant gain over stock though. If you take your logic above about the sink, and apply that to stock where the water is on 3/4 of the way for 1 min. Then with high ratio rockers you turn on the water all the way for one minute, obviously you are going to have more water with the rockers. If you are trying to get maximum performance out of your engine, obviously the way to go would be a cam, but that is expensive because of the amount of work that is involved installing it, not to mention getting the cam ground that is right for you. If you aren't worried about getting every little bit out of your engine as you can, then rockers would make since due to their ease of installation and their cheaper price. The stock cam has plenty of potential, just not nearly the potential of an aftermarket one.

Shawn
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Old 01-11-2004, 09:06 PM   #36
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the only cam that you can get for a series 1 motor is a stock grind cam. i had to have a new stock cam reground to get the specs that i wanted. small block chevy rockers will work on our heads, but you need to still take the heads off and machine the stud bosses and install 92 guide plates and studs. then you run into this problem. finding taller valve covers to clear the roller rockers. i put this project on hold for now because i cant find valve covers that are tall enough. this is why i took a set of 93 roller fulcrum rockers and pedestals and redrilled them for 3/8" bolts. the cam cost me a total of $251, including shipping to them and back. a good set of roller rockers alone will cost you that. and thats not counting your custom pushrods, studs, machine work to the heads ect.
higher ratio rocker will as a couple of degrees in duration, but our series 1 cams really bite. we only have 181* Intake and 190* exhaust at .050" and .403" on intake and .405" on exhaust. as far as the most bang for your buck, the cam is way ahead of the rockers.
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Old 01-11-2004, 09:40 PM   #37
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The Series II cam isn't much better. It has more lift and duration but it is basically the same. The series II cam has .4128 intake, and .408 exhaust lift with 182 intake duration and 190 exhaust duration. So, it is pretty much the same cam, besides differences that those specs don't show.

Shawn
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Old 01-11-2004, 09:47 PM   #38
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i wasnt sure what the specs on the series II motors was. but i do know that comp cams makes like 3 different grinds for them.
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Old 01-11-2004, 10:41 PM   #39
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Quote:
Originally Posted by jeffrey10x2
i wasnt sure what the specs on the series II motors was. but i do know that comp cams makes like 3 different grinds for them.
I thought Comp Cams did custom grinds??
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Old 01-11-2004, 11:43 PM   #40
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they do if they have a core for it. and they do have a regrinding service too. i looked for like 2 months to find a core to have one made. no one makes them, a tech a comp cams said they have a series 1 cam on the drawing board but it can take like 1-2 years before we ever see one , if we ever see one. i have talked to about 10 differnt cam man. and cam grinding services and the only one that i could find to do a regrind to what i wanted was oregon cam grinding. plus all the others do a ***** test to see how deep the heat treat goes into the cam before they regrind it. oregon cam grinding actually does a rockwell hardness test after it is done. all are about the same price for the regrinding service, but you still need to send them your cam to have it done. that is why i went to NAPA and got a new cam for my car and sent it to them. for what i wanted, i didnt want to take a chance on a used cam.
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