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Discussion Starter · #1 ·
I just talked to the only two manufacturers I've had any dealings with, and wasn't in love with either suggestion.

Last year I ran a 286/297 .799/.768, 111 LSA, installed at 108. I'm sure this is way wrong and probably why I ran out of steam when I started upping the jets.

So, hoping to get a new bumpstick to allow for the second gun, the first recommendation was 285/302, .846/.820. Thinking thats too short on exhaust duration, and more lift than I wanted to run.

Second stick was called out at 287/306, .846/.820. I like these duration numbers, but still more lift than what I wanted.

Both are on a 116.

I've been running a pretty weak spring with stainless steel valves and stock size lifters and getting away with it. I was hoping to just up the duration and widen the lsa, but apparently nobody has those lobes.

SO, whats out there for a 565 thats getting hit in the 250-550 range???
 

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Check out Reher morrison 565 Nos cam on their website. Good piece
 

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Discussion Starter · #4 ·
Comp 1718/4064 R14 Install @ 110 LC

.800-.800 lift w/ 1.7 285-304 @.050
318-344 seat duration
I'm guessing those are the lobes Tim specd for me, but he said he would put it on a 116. Problem is I have a nice set of 1.8 rockers with a decent box of spares. I would really like to find a cam that gets me closer to .800 with my rocker.

I've got a cam sitting here that would be ~289/317. .856/.828 on a 114. Thinking if I get it in so the intake closes at the right time, I'd only be giving up a little charge out the exhaust versus the Comp. Course it was ground in 1986 :rolleyes:
 

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the second cam you specked the 287/306 116 ls is the exact bullet specs im putting in my 598 but @.875/.850 lift.how much are you gonna spray.i havnt ran it yet so cant give any results.i agree you were way off before shoulda at least been on a 114ls
 

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you didnt mention what heads you have but the old cam you have with 317 ex duration looks like duration for big chief heads btw probably not a good choice if its a conv head motor
 

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Discussion Starter · #7 · (Edited)
My heads are 345 Pro 1s that have been worked pretty good, although I can't find the sheet from the flow bench. I plan on spraying anywhere from a single fogger at 28 up to maybe two kits with 34s depending on what I'm doing.

The 289/317 cam is out of an old Pontiac headed Pro Stock motor (back when they were still 4.84 motors). When we were running that motor in a T/S car, we switched to the "right" cam and picked up like .03 in 60' but slowed down overall. My combo now would definetely benefit from being softened up down low...
 
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