468 combo help - Chevelle Tech
Performance Our High Performance area

 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 9 (permalink) Old Sep 8th, 12, 10:57 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 865
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

64 Chevelle 496 underway
64 F100 Street Rod with BBC /Chevy trapped in a ford body
StevenS is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old Sep 8th, 12, 11:33 PM
Tech Team
Bill
 
Join Date: Nov 2006
Location: Spring, TX
Posts: 538
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

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
RATtyCamino is offline  
post #3 of 9 (permalink) Old Sep 10th, 12, 6:52 AM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 865
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.

64 Chevelle 496 underway
64 F100 Street Rod with BBC /Chevy trapped in a ford body
StevenS is offline  
post #4 of 9 (permalink) Old Sep 10th, 12, 7:32 AM
Lifetime Premium Member
Dan
 
Join Date: Jan 2006
Location: Somers,CT
Posts: 9,909
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.

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
dreis454 is offline  
post #5 of 9 (permalink) Old Sep 10th, 12, 8:12 AM
Tech Team
Bill
 
Join Date: Nov 2006
Location: Spring, TX
Posts: 538
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
RATtyCamino is offline  
post #6 of 9 (permalink) Old Sep 10th, 12, 8:37 AM
Team Member
Todd
 
Join Date: Mar 2007
Location: Fargo, ND
Posts: 1,913
Re: 468 combo help

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

Dan, what's with the Lunati part # change?

Brodix bb2 505 e85 build in progress


Best ET 10.46
Best MPH 127
Best 60 1.47
Best 1/8 6.65 104
69 Malibu is offline  
post #7 of 9 (permalink) Old Sep 10th, 12, 8:47 AM
Lifetime Premium Member
Dan
 
Join Date: Jan 2006
Location: Somers,CT
Posts: 9,909
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
dreis454 is offline  
post #8 of 9 (permalink) Old Sep 10th, 12, 9:34 AM
Lifetime Premium Member
Jon
 
Join Date: Jun 2011
Location: Iowa
Posts: 2,359
Re: 468 combo help

Consensus is to change the camsaft.
72BBMonte is offline  
post #9 of 9 (permalink) Old Sep 10th, 12, 10:13 AM
Senior Tech Team
 
Join Date: Apr 1999
Location: Huber Heights, Ohio , U.S.A.
Posts: 1,668
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.

Original 138 car from Freemont. 67 SS Bench seat 4-speed car with 396, Original M-20 with factory 3.73 12 Bolt Posi.

"You can never go fast enough" James Taylor Two-Lane Blacktop

Member #3635
Tri-State Chevelle Member #F-10
Larry Grigsby
plain 69 is offline  
Sponsored Links
Advertisement
 
Reply
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome