1.7 vs 1.8 rocker arms - LS1TECH - Camaro and Firebird Forum Discussion

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1.7 vs 1.8 rocker arms

Old 12-06-2017, 01:57 PM
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Default 1.7 vs 1.8 rocker arms

I'm looking at replacing my rocker arms with roller tip, question is most roller rockers are 1.8 and I'm not yet planing a motor build so they will be used with stock cam and VVT until down the road. Any thoughts on if a 1.8 will cause VTP contact?
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Old 12-06-2017, 01:59 PM
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They likely won't cause contact but you may need springs to use 1.8s. You'll have to check that.
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Old 12-06-2017, 06:07 PM
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Whose roller tip rockers do you plan to use? TSP has 1.7 roller tip rockers.
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Old 12-06-2017, 07:38 PM
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I think I have a set of those on back order with jegs but it's been a month and no ETA. Looking for another set or if 1.8s work on a stock Vvt setup could be beneficial if and when I do build the motor
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Old 12-06-2017, 10:10 PM
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Call TSP and see what they have to say about it.
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Old 12-07-2017, 04:18 PM
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Originally Posted by Wild bill 4883 View Post
.....Any thoughts on if a 1.8 will cause VTP contact?
With the stock cam you'll be fine.......nowhere near having valve-to-piston clearance issues.

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Old 12-07-2017, 05:49 PM
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Comp Cams pro magnum rocker arms come in 1.7 or 1.8 your choice
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