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#1
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Crane HIT-290-2-NC Camshaft
Has anyone ever ran this particular Crane camshaft? It was in an extra 455 engine of mine and I am considering reusing it as it looks to be in excellent shape and appears to be from the 80's.
The numbers stamped on the back of the camshaft are: Crane HIT-290-2-NC I was just curious how this camshaft performs if you have ran it. I am also curious as to what the duration/lift specs are on it. Just a rough measurement with some dial calipers, it seems to be around .500 lift. |
#2
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Cam card in post 11 here:
https://forums.maxperformanceinc.com...t=HIT-290-2-NC https://www.summitracing.com/parts/crn-284281#overview .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE Last edited by Steve C.; 06-20-2023 at 06:19 PM. |
#3
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HIT 290-2-NC, .050 Duration is 234 int and 244 ex. Lift is 485 int and 505 ex. on a 112 LSA. Nice cam, one of the old Fireball grinds. Very rowdy in a 400 but perfect for a 455.
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The Following User Says Thank You to 400 Lemans For This Useful Post: | ||
#4
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
#5
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Run that all day long in a street 455.
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#6
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Here's a short, shaky vid of that cam in my 455. I made this quite a while back and don't recommend one-handing the car while recording like I did.
https://youtu.be/0UmApZeYKvM
__________________
Triple Black 1971 GTO |
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#7
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I have a Crane HIT 290-2-NC new on the shelf
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A man who falls for everything stands for nothing. |
#8
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Is this about what they used to call a "3/4" cam in the old days?
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#9
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Thanks for the replies everyone. Your car sounds great NeighborsComplaint. I’m considering using this in a 455 short block with 197 heads. Hoping the lower compression doesn’t hurt it.
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#10
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With the exh to intake ratio of those 197 heads in stock form, if your going to also run headers a would not run a cam like that with its full extra 10 degrees of exh duration .
I would go no more then 4 or 5 larger.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#11
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For its age, it holds up pretty well. Crane was pretty far ahead of the curve with asymmetric lobes and high intensity ramps on this 80's-90's grind. At that time, the choices were pretty limited considering cams like the straight pattern Comp Magnums and Lunati Bracket Masters were popular choices. Most guys I knew stuck with the 041 and this Crane was a step up from there. Mine certainly doesn't run like an antique. Watch my tach needle in the video.
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Triple Black 1971 GTO |
#12
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Quote:
Thats why I scooped mine up because its a big improvement over any stock offering but is prior to the ultra quick ramps associated with ruined cams during break in
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A man who falls for everything stands for nothing. |
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#13
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The cam Whitmore spec-ed for my ported 197s was a .270-.275 @.050 cam.
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#14
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Quote:
Crane HIT 284281 234/242 = 8 deg
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Triple Black 1971 GTO |
#15
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If your 197 heads have a stock chamber size I think that cam has a little too much duration. I run a RAIV cam in a 8.9:1 static CR 455 with 7K3 heads and the combo runs well. I wouldn't want to lower the CR and increase the cam size in my motor. Probably something like 224/234 at 0.050" duration might work better.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#16
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Compare the seat to seat timing of the cam. NOT the .050" timing data.
( However note the cam card says something different than Summit. Is it 290/300 or 296/304. See post #4 in the link I posted above ) .
__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE Last edited by Steve C.; 06-22-2023 at 08:43 AM. |
#17
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Dynamic Compression Ratio
Will my engine run on pump gas? http://members.uia.net/pkelley2/DynamicCR.html It's not a website based program, you download it and install it. See bottom of the page. .
__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
#18
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Quote:
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#19
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Quote:
It is possible that those numbers are from the very same cam. It could just be a matter of where they are looking at seat duration. As you know some use 0.004", 0.045", 0.005", or 0.006" lifter raise. Stan
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Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#20
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Quote:
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Triple Black 1971 GTO |
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