406 build?
Racer
Joined: Sep 2008
Posts: 454
Likes: 7
From: SB County CA
I mentioned the parts so others could compare.
I just remembered this:
The rep at CNC Motorsports (Jason?) mentioned that he preferred the 3.75 vs the 3.785 stroke so he wouldn't have to grind on the rod end bolt. Almost certain this was for cam clearance, but I don't remember specifics (limited cams or typically required regardless of cam base?) With my stated goals (street only/longevity), he recommended to stay away from grinding on rod end bolts. This was at least a consideration with the SHP block and the planned/recommended rotating parts.
Hope this helps,
Rob
I just remembered this:
The rep at CNC Motorsports (Jason?) mentioned that he preferred the 3.75 vs the 3.785 stroke so he wouldn't have to grind on the rod end bolt. Almost certain this was for cam clearance, but I don't remember specifics (limited cams or typically required regardless of cam base?) With my stated goals (street only/longevity), he recommended to stay away from grinding on rod end bolts. This was at least a consideration with the SHP block and the planned/recommended rotating parts.
Hope this helps,
Rob
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
I mentioned the parts so others could compare.
I just remembered this:
The rep at CNC Motorsports (Jason?) mentioned that he preferred the 3.75 vs the 3.785 stroke so he wouldn't have to grind on the rod end bolt. Almost certain this was for cam clearance, but I don't remember specifics (limited cams or typically required regardless of cam base?) With my stated goals (street only/longevity), he recommended to stay away from grinding on rod end bolts. This was at least a consideration with the SHP block and the planned/recommended rotating parts.
Hope this helps,
Rob
I just remembered this:
The rep at CNC Motorsports (Jason?) mentioned that he preferred the 3.75 vs the 3.785 stroke so he wouldn't have to grind on the rod end bolt. Almost certain this was for cam clearance, but I don't remember specifics (limited cams or typically required regardless of cam base?) With my stated goals (street only/longevity), he recommended to stay away from grinding on rod end bolts. This was at least a consideration with the SHP block and the planned/recommended rotating parts.
Hope this helps,
Rob
If your using a Callies Compstar rod and a 3.875 stroke crank a .930 base cirlce cam will clear those rods.
Racer
Joined: Sep 2008
Posts: 454
Likes: 7
From: SB County CA
Blockman,
Thanks--that's good for the group to know. So no grinding required on a std deck block using 3.875" stroke and the callies rod? What do you recommend for someone wanting to go to 4.000" stroke? I stuck with 400ci the parts selection would be/was less intimidating. There are a lot of things to consider when building an engine, that if not planned for, can really drive the costs up.
All please be advised that I meant to type 3.875" vs 3.785" in my previous post--don't want to cause any confusion.
Rob
Thanks--that's good for the group to know. So no grinding required on a std deck block using 3.875" stroke and the callies rod? What do you recommend for someone wanting to go to 4.000" stroke? I stuck with 400ci the parts selection would be/was less intimidating. There are a lot of things to consider when building an engine, that if not planned for, can really drive the costs up.
All please be advised that I meant to type 3.875" vs 3.785" in my previous post--don't want to cause any confusion.
Rob
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Blockman,
Thanks--that's good for the group to know. So no grinding required on a std deck block using 3.875" stroke and the callies rod? What do you recommend for someone wanting to go to 4.000" stroke? I stuck with 400ci the parts selection would be/was less intimidating. There are a lot of things to consider when building an engine, that if not planned for, can really drive the costs up.
All please be advised that I meant to type 3.875" vs 3.785" in my previous post--don't want to cause any confusion.
Rob
Thanks--that's good for the group to know. So no grinding required on a std deck block using 3.875" stroke and the callies rod? What do you recommend for someone wanting to go to 4.000" stroke? I stuck with 400ci the parts selection would be/was less intimidating. There are a lot of things to consider when building an engine, that if not planned for, can really drive the costs up.
All please be advised that I meant to type 3.875" vs 3.785" in my previous post--don't want to cause any confusion.
Rob
Race Director
Joined: Apr 2000
Posts: 17,654
Likes: 190
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
No it looks pretty nice, this was a small base circle billet solid roller cam for my Motown block 
Last edited by MotorHead; Mar 6, 2010 at 12:06 AM.
Safety Car
Joined: Oct 2006
Posts: 3,993
Likes: 9
From: Gig Harbor WA
What would be an "appropriate" carb for this hypothetical 406 we have been discussing??
I may have a line on a Holley 770 SA cheap. I have a 670 SA on my ZZ4 and really like it so far.
I realize carb brand is personal preference, but would 770 cfm be sufficient on a 475+/-hp 406?? Electric choke and vac secondaries is my preference.
Thanks...
I may have a line on a Holley 770 SA cheap. I have a 670 SA on my ZZ4 and really like it so far.
I realize carb brand is personal preference, but would 770 cfm be sufficient on a 475+/-hp 406?? Electric choke and vac secondaries is my preference.
Thanks...
