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Man all this valvetrain failure talk has me thinking you should just take merc lobes and widen them. Would be nice to have peace of mind from knowing the cam combo did an endurance cycle at some point.
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If you want to use your current pushrods, you'll need to have same exact base circle as your current cam. Having a cam reground removes material, not adds it, so you'll have to re measure for new (longer) pushrods. Just a heads up.
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1 Attachment(s)
Originally Posted by ARB38
(Post 4407976)
What are your thoughts on this cam for a 540, 9:1, ported 088 heads, gill wet exhaust, looking for 5800 rpm.
239/246, 646/639, 112 cl, and 7/4 swap? On the desk top dyno it looks pretty good for what I am looking for. It might have pulled a couple hundred more rpm with a bigger carb, but it was peaking at 5500. [ATTACH=CONFIG]551503[/ATTACH] |
Originally Posted by HaxbySpeed
(Post 4408065)
I did this one not long ago with the Lunati 238/248 .639 - .629
It might have pulled a couple hundred more rpm with a bigger carb, but it was peaking at 5500. [ATTACH=CONFIG]551503[/ATTACH] |
Why is it that the torque numbers start to fall off at 4,400 rpm's? May be a stupid question but I'm not a builder so hey gota learn some how.
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Torque will usually peak 1200 +/- 100 to 200 before HP peak.
Torque is measured. HP is equated from Torque and RPM.. |
Originally Posted by HaxbySpeed
(Post 4408065)
I did this one not long ago with the Lunati 238/248 .639 - .629
It might have pulled a couple hundred more rpm with a bigger carb, but it was peaking at 5500. [ATTACH=CONFIG]551503[/ATTACH] carb will give a few hundred more rpm's. If not I guess new heads will be next. |
Originally Posted by ARB38
(Post 4408086)
Thank you for the reply. On the desk top dyno it also quit at just past 5500. Hoping the Nickerson
carb will give a few hundred more rpm's. If not I guess new heads will be next. |
Originally Posted by MILD THUNDER
(Post 4408030)
I hope you are ok with them, being that Howards sells them with their name on them.
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Originally Posted by SB
(Post 4408054)
If you want to use your current pushrods, you'll need to have same exact base circle as your current cam. Having a cam reground removes material, not adds it, so you'll have to re measure for new (longer) pushrods. Just a heads up.
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