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  #1  
Old Sep 8th, 12, 10:57 PM
StevenS StevenS is offline
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Steve
 
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Location: Franklinville N.J.
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Default 468 combo help

Just picked up a 87 monte SS with a 468. I was out playing today and the motor lost oil pressure and I shut it right off. Put 4 qts of oil in it to overfill it and oil pressure is back. So the pick came off.

So since I need to pull the motor. I fiqure I should change the cam. Car runs ok but I feel it needs a little more power. What would you change?

468 with about 200 miles on it.
781 heads
10.1 compression
forged pistons
Comp cam FT 280H 280/280 520/520
1.7 roller rockers
850 holley
2.5 exhaust
headers look to be 2 inch a little big
2500 convertor in a 700r4
373 moser 12 bolt
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  #2  
Old Sep 8th, 12, 11:33 PM
RATtyCamino RATtyCamino is offline
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Bill
 
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Default Re: 468 combo help

Have the heads pocket ported and big valves installed if not already. If you are good with staying flat tappet on the cam then upgrade to a lunati 60204.

Bill
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1978 Malibu
406 w/AFR 195's, 9.9;1, Lunati 60103
TH400, 10" converter, 3.73's.
1.65 60', 7.55 @ 91.37 mph.

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  #3  
Old Sep 10th, 12, 6:52 AM
StevenS StevenS is offline
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Default Re: 468 combo help

That is the cam I was looking at. Heads had some port work done but it does retain the stock valve size.
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  #4  
Old Sep 10th, 12, 7:32 AM
dreis454 dreis454 is offline
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Dan
 
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Default Re: 468 combo help

Quote:
Originally Posted by RATtyCamino View Post
Have the heads pocket ported and big valves installed if not already. If you are good with staying flat tappet on the cam then upgrade to a lunati 60204.

Bill
Quote:
Originally Posted by StevenS View Post
That is the cam I was looking at. Heads had some port work done but it does retain the stock valve size.
Or if you really want to wake it up, stick a Comp xr288hr in it or a Lunati 20110712 (previously the 60212) or even a comparable Howards cam & lifter package @ a little over $500. Makes it not worth using an FT cam.
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72 ss 454 "W" code,w/cowl induction (how many left?)
matching # LS5 454+.060" 9.2 :1, 2.19/1.88 valves,Comp HR cam 289/295 234/240 .613/.613 110* (dyno'd @ 557hp @ 5400 & 583tq @ 4100)
matching # M22 w/CF dual friction clutch.
Holley 750 HPs dp(82751) on Weiand Stealth & MSD Pro billet HEI
Hedman Elite headers/Flowmaster exh. (w/super 40s)
TC#3095
Garage find parked from 1978-2004

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http://ssregistry.macswebs.com/1972/1d37w2b_reis.htm
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  #5  
Old Sep 10th, 12, 8:12 AM
RATtyCamino RATtyCamino is offline
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Bill
 
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Default Re: 468 combo help

Quote:
Originally Posted by dreis454 View Post
Or if you really want to wake it up, stick a Comp xr288hr in it or a Lunati 20110712 (previously the 60212) or even a comparable Howards cam & lifter package @ a little over $500. Makes it not worth using an FT cam.
Even Better!
__________________
1978 Malibu
406 w/AFR 195's, 9.9;1, Lunati 60103
TH400, 10" converter, 3.73's.
1.65 60', 7.55 @ 91.37 mph.

http://i1270.photobucket.com/albums/...u/DSCN0151.jpg

http://i1270.photobucket.com/albums/...DSCN0155-1.jpg

http://www.youtube.com/watch?v=RZOxc9ywxbI
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  #6  
Old Sep 10th, 12, 8:37 AM
69 Malibu 69 Malibu is offline
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Todd
 
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Default Re: 468 combo help

Go roller! I'm glad I did, combo in my sig.

Dan, what's with the Lunati part # change?
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  #7  
Old Sep 10th, 12, 8:47 AM
dreis454 dreis454 is offline
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Dan
 
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Default Re: 468 combo help

Quote:
Originally Posted by 69 Malibu View Post
Go roller! I'm glad I did, combo in my sig.

Dan, what's with the Lunati part # change?
IDK,Look on Lunatipower.com and it seems they changed all the Voodoo HRs maybe more,I didn't look.
__________________
72 ss 454 "W" code,w/cowl induction (how many left?)
matching # LS5 454+.060" 9.2 :1, 2.19/1.88 valves,Comp HR cam 289/295 234/240 .613/.613 110* (dyno'd @ 557hp @ 5400 & 583tq @ 4100)
matching # M22 w/CF dual friction clutch.
Holley 750 HPs dp(82751) on Weiand Stealth & MSD Pro billet HEI
Hedman Elite headers/Flowmaster exh. (w/super 40s)
TC#3095
Garage find parked from 1978-2004

http://macswebs.com/ls5registry/bal/bal.htm
http://www.chevelles.com/showroom/sh...0&ppuser=25834
http://ssregistry.macswebs.com/1972/1d37w2b_reis.htm
http://www.youtube.com/watch?v=YqZkVw6xMkM
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  #8  
Old Sep 10th, 12, 9:34 AM
72BBMonte 72BBMonte is offline
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Jon
 
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Default Re: 468 combo help

Consensus is to change the camsaft.
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  #9  
Old Sep 10th, 12, 10:13 AM
plain 69 plain 69 is offline
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Join Date: Apr 1999
Location: Huber Heights, Ohio , U.S.A.
Posts: 1,653
Default Re: 468 combo help

Leave the cam alone and put in the bigger valves you will probably pick up around 30 hp. I picked up from 13.45 to a 12.95 with that change with 049's and a 272 .515 lift camshaft several years ago. If you have a good flat tappet I would just run it. If you change it I would not chance another flat tappet. I would go with a roller more than likely. It all depends on what you want. I mean you can grab more power and go with a bigger cam, valves and maybe go with some 1 7/8" headers. That 280 cam probably sounds really good in there right now.
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