General engine tech -- Drag Racing to Circle Track
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by rick7343 » Wed May 23, 2012 6:22 am
Wondered if anyone made stock style stamped rocker arms higher than 1.6 ratio ? (small block chevy...)
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by dfree383 » Wed May 23, 2012 9:35 am
I beleve Smokey used to put BBC Steel rockers on, if I recall correctly.
Some of the older guys may remember?
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by ZIGGY » Wed May 23, 2012 9:48 am
Yes. Mentioned & pictured in several build articles. I believe studs were relocated.
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by zums » Wed May 23, 2012 8:09 pm
studs were definetly relocated
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by robert1 » Wed May 23, 2012 8:41 pm
rick7343 wrote:Wondered if anyone made stock style stamped rocker arms higher than 1.6 ratio ? (small block chevy...)
Elgin makes them.
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by rookie » Wed May 23, 2012 9:09 pm
If you can use roller rockers?
I think Crane still makes a 1.65 in their gold rockers that returns about a 1.68, Comp makes a 1.7 and use to have a 1.8 but I don't know if they still cary the 1.8
Lower cost would be a Harland Sharp 1.65
Pioneer makes stamped for Pontiac in a 1.65, You may contact them.
http://anonymaton.drupalcafe.com/rockers
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by rustbucket79 » Wed May 23, 2012 9:33 pm
We used to have a box full of stamped 1.65's, but I don't recall the name. (this was years ago) You definately needed to clearance the factory heads for pushrod clearance with them.
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by robert1 » Wed May 23, 2012 10:10 pm
robert1 wrote:rick7343 wrote:Wondered if anyone made stock style stamped rocker arms higher than 1.6 ratio ? (small block chevy...)
Elgin makes them.
Missed the higher part!!!
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by dfree383 » Wed May 23, 2012 11:11 pm
didn't pontiac Ram Air motors come with a higher ratio? they'd probably bolt on with minimal mods?
Plenty of high ratio stud mounted roller rockers avaliable.
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by rick7343 » Wed Jun 27, 2012 2:57 pm
Guess I should have mentioned that the rules we have only allow stamped steel... no rollers..
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by donc » Wed Jun 27, 2012 3:13 pm
Manley makes a 1.6-1 for 3/8 stud. Elgin has both 3/8and 7/16. in 1.6 and they both look stock.
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by Lazy JW » Wed Jun 27, 2012 3:19 pm
Chevy stamped rockers for the 250/292 I6's are something like 1.75 ratio; I have no clue if they will work for your application.
Joe
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by shoedoos » Wed Jun 27, 2012 3:58 pm
Diverco rockers used to make high ratio stamped steel rockers

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