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1.65 Ratio Roller Rockers for Holden VN Heads
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Joined: 28/06/2011(UTC)
Posts: 61
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Gents,
I'm building a competition Holden VN head using a solid roller camshaft and roller rockers. These are the roller rockers that I'm using:
Crower 73613-16, 7/16" Rocker Stud, 1.65 Ratio
Unfortunately, these rockers come in 3 different part numbers for three different engine series:
Crower 73613-16 for Ford 289, 302, 351W
Crower 73624-16 for Pontiac V8
Crower 73671-16 for Chevy 265-400 V8
Which one should I choose? I suppose they are all slightly different in geometry. Which of the above mentioned motor heads is most similar to the Holden?
Valves for the Holden head are Ferrea #F6147 (originally for FORD 351 engines) for the exhaust (1.6") and Ferrea #F6206 (originally for SB Chevy engines) for the intake (2.02").
Can anyone help?
Thank you so much!
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"I killed the Bank"
Andrew Jackson, last words |
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Rank: Member
Groups: Registered
Joined: 28/06/2011(UTC)
Posts: 61
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Just made a few calls and found an answer.
CRANE recommends their Gold Rocker Series #28758-16 for Holden V8s and they are originally for 1967-81 Pontiac 265-455 engines. I infer that any rockers for these Pontiac engines will be fine on Holden V8s.
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"I killed the Bank"
Andrew Jackson, last words |
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1.65 Ratio Roller Rockers for Holden VN Heads
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