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Old 11-20-2010, 02:46 PM
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Solid roller springs issue

Hi guys...I'm about to purchase a set of SBF AFR 1381 heads....Ive got a Crane mechanical solid roller cam part# 448031...int/exh lift is 619/640...the issue I have is which valve springs to use....Crane spec sheet says to use their 99885 springs (closed 215 lbs @ 1.950...open 565 lbs @ 1.360)..thats all good if you want to change out springs/possible machining/cost etc...AFR offer a spring uprade package...Ive emailed AFR Tech...They've suggested using their upgrade #8055 but didn't give the specs...this upgrade comes as no charge,so obviously I'm leaning towards this option...as I live in Australia I don't want the hassle of these things arriving from the States and to turn out wrong...Ive checked the Net and can't find any info on the 8055,even on the AFR site...If someone can "verify" the use of the 8055's or offer any suggestions I'd greatly appreciate it....Thanx...PJ
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Old 11-20-2010, 10:57 PM
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After much looking and probing, I have determined that #8055 is not a spring number, but a work order number that changes instructions to the engineering/assembly department at AFR. It changes spring #8019 (standard on the 1381 head) to spring #8000.

Here's where I found the information....
http://www.airflowresearch.com/pricelist.pdf

And here are the spring specifications....
http://www.airflowresearch.com/valve_spec.php
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Old 11-21-2010, 09:34 PM
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bump.......
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Old 11-21-2010, 11:17 PM
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Solid Roller Springs

Quote:
Originally Posted by techinspector1
After much looking and probing, I have determined that #8055 is not a spring number, but a work order number that changes instructions to the engineering/assembly department at AFR. It changes spring #8019 (standard on the 1381 head) to spring #8000.

Here's where I found the information....
http://www.airflowresearch.com/pricelist.pdf

And here are the spring specifications....
http://www.airflowresearch.com/valve_spec.php
Many thanks for your help...things are a bit clearer now....Peter
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