Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Thinking of going to smaller cam for torque & MPG
View Single Post
  #1 (permalink)  
Old 01-04-2013, 06:35 PM
BUFFALOBILLPATRICK BUFFALOBILLPATRICK is offline
Registered User
 
Join Date: Oct 2007
Location: Stonewall Colorado
Posts: 109
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thinking of going to smaller cam for torque & MPG

Hello, I haven't been here for quite some time.

Here is what I have:
1972 Monte Carlo
4.56 posi, TH400 with GV OD (3.56 in OD) 3000 RPM convertor
355 with forged flat tops .025" in hole with .015 steel shim head gasket, 4 valve reliefs
stock rods & crank, balanced
Edelbrock ProFlo 3500 EFI
MSD ignition
1-5/8" headers & 2.5" dual exhaust, H-pipe
Summit aluminum heads (rebranded Brodix IK180) 2.02/1.60 64cc 180cc
flow is suppose to be 244/175 cfm @ 28" H2O
Good PAC beehive valve springs & Smith pushrods
Lunati 50156 retro roller cam & lifters 232/242* @ .050" .510/.525 lift (stock rockers),
rated to 6500 RPM + Comp full roller rockers 1.6, lift = .544/.560
SCR = 10.25, DCR @ sea level 8.66, at Denver 5280' about 7.6

I live in Colorado & drive from 5280' to 8500' altitude

It SUCKS gas!

I'm thinking of putting in about 20* smaller cam for street torque & MPG
I have my eye on Howards Cams 113215-08
217/225* @ .050" .495/.500 lift (stock rockers) 108* LSA

With my 10.25 CR, this cam would have a very high DCR of 8.95 at sea level, but about 7.9 @ 5280

Comments?

Last edited by BUFFALOBILLPATRICK; 01-04-2013 at 06:40 PM. Reason: more info
Reply With Quote