Go Back  Offshoreonly.com > Technical > General Q & A
Let's hear cam suggestions >

Let's hear cam suggestions

Notices

Let's hear cam suggestions

Thread Tools
 
Old 04-11-2018, 06:28 PM
  #1  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default Let's hear cam suggestions

So the motor builder got back with me today and long story short I got screwed on the cam I bought...not even close to what I was told it was and its not even a roller cam...flat tappet according to comp...sooo that's all I'll say about that lol

Moving on..

454 based...030 over
dart iron eagle heads with 120ish cc chamber
JE flat tops..shooting for 8.5:1 comp
eagle rods
CMI headers
I'll post a pic of exhaust but its dry to tips I believe
If not this year next year it will have a 6-71 blower at 6-7 lbs boost
right now it will have a 256 blower at the same 6ish lbs but I'd like to build it for the 6-71 as that's the overall plan
dual 800 holleys


What I'm looking for in a cam...

Obviously the best performance without sacrificing a few things
I want it to give you goosebumps when I start it
I want a good attitude around the dock..no stalling or having to feather it to keep it running
Not sure if reversion will be an issue..I'll post a pic of the exhaust
RPM range will probably be 5600ish maybe a little more..don't want to twist it too hard especially with the 256

So lets hear some suggestions guys....

Custom grind?? from who??
off the shelf??
I know the 731 is suggested a lot but is there a better option for my build??

Any help would be much appreciated

Thanks!!

Stewart
BBYSTWY is offline  
Old 04-11-2018, 06:33 PM
  #2  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default


BBYSTWY is offline  
Old 04-11-2018, 06:33 PM
  #3  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default

this is my exhaust setup for reference
BBYSTWY is offline  
Old 04-11-2018, 07:45 PM
  #4  
Registered
iTrader: (1)
 
Join Date: Mar 2012
Location: Cape coral, FL
Posts: 4,189
Received 55 Likes on 34 Posts
Default

Comps huc lobes are nice. That's what I went with. Naturally aspirated 502s. They are designed to be easy on valvetrain. Longer duration lower lift setup.
Crude Intentions is offline  
Old 04-11-2018, 08:16 PM
  #5  
Registered
iTrader: (4)
 
Rookie's Avatar
 
Join Date: Jan 2003
Location: Grand Rapids, MI
Posts: 5,696
Received 1,206 Likes on 579 Posts
Default

May I suggest...

Rookie is offline  
Old 04-11-2018, 09:18 PM
  #6  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default

lol so pretty aggressive then??
BBYSTWY is offline  
Old 04-11-2018, 09:31 PM
  #7  
Registered
iTrader: (4)
 
Rookie's Avatar
 
Join Date: Jan 2003
Location: Grand Rapids, MI
Posts: 5,696
Received 1,206 Likes on 579 Posts
Default

I'd do the 741 over the 731 if you plan on going with a bigger blower at a later date. Not that I have any science behind it, but I believe there a many builds on here with the 741 blower combination and it makes good power.
Rookie is offline  
Old 04-11-2018, 09:33 PM
  #8  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default

I'll look into that thanks!! that's a crane 741 right?? also will that work in a gen 5 or whatever mine is with a cam button or do I have to upgrade to run the step nose with that cam??
BBYSTWY is offline  
Old 04-11-2018, 09:51 PM
  #9  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default

http://www.jegs.com/i/Crane-Cams/271/139021/10002/-1

this
one is the 139021 and specs are slightly smaller than the 741

https://www.summitracing.com/parts/crn-139671

this
one is very close to the 741 and is the crane 139671

both of these will work in my engine from my research as the 741 is a step nose and requires the retainer plate

opinions??
BBYSTWY is offline  
Old 04-11-2018, 09:54 PM
  #10  
VIP Member
VIP Member
Thread Starter
 
BBYSTWY's Avatar
 
Join Date: Jul 2017
Location: Sodus MI
Posts: 1,650
Received 249 Likes on 125 Posts
Default

the 139671 has a 114 lobe separation...is that too much too little?? not a cam master here clearly hahhaha need some advise on these numbers because I kinda know what they mean but not really lol
BBYSTWY is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.