406 Cam Suggestions
Thread Starter
Race Director
Joined: Feb 2000
Posts: 12,431
Likes: 1
From: CT
406 Cam Suggestions
If you were going to have a 406 built, what type of cam and what cam would you go with.
Compression ratio suggestions?
Any head suggestions.
The car has 3000 stall and 4.10 gears.
What does it take to make 500 crank hp?
Compression ratio suggestions?
Any head suggestions.
The car has 3000 stall and 4.10 gears.
What does it take to make 500 crank hp?
Melting Slicks
Joined: Dec 2001
Posts: 2,025
Likes: 1
From: Billings MT
Re: 406 Cam Suggestions (QuickVet)
I'm currently running a Comp XR-288HR Hydraulic Roller Cam.
Specs:
236/242 @ .050
.555I/.540E
110LS,106CL
CR is 10.4:1
AFR 195 Heads
Victor Jr Intake
I think I'm at or near the 500 mark. It sure is one heck of a ride. :reddevil
I am also running a 4000rpm stall.
I am looking forward to getting to the track and seeing how it will run. There are a couple other 406's on the forum that are nearly identical and they are in the low 11's, although they are in C4's as well.
Good Luck! :cheers:
Specs:
236/242 @ .050
.555I/.540E
110LS,106CL
CR is 10.4:1
AFR 195 Heads
Victor Jr Intake
I think I'm at or near the 500 mark. It sure is one heck of a ride. :reddevil
I am also running a 4000rpm stall.
I am looking forward to getting to the track and seeing how it will run. There are a couple other 406's on the forum that are nearly identical and they are in the low 11's, although they are in C4's as well.
Good Luck! :cheers:
Melting Slicks
Joined: Dec 2001
Posts: 2,025
Likes: 1
From: Billings MT
Re: 406 Cam Suggestions (ld85)
ld85 The cam is fairly docile. It idles at 800rpm (albiet with a lope). It only pulls ~9" vacuum at this idle however. Part throttle driveability is great, and its very responsive. It pulls ferociously on the top end and so far it has been great. I also don't have any issues with my brakes or headlights. I'm hoping i'll be able to make some smoke videos this coming weekend... :reddevil
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: 406 Cam Suggestions (VETDRMS)
I have a Comp cams XR custom lobe Hydraulic roller cam, pushrods, and lifters for sale. I need the cam card but it's something like 242/248 @ .050 110 .555/.568 with 1.5's
It's their recommended cam for motors like VETDRMS or street strip motors in the 406-427 ci range.
I just don't want to have anymore to do with comp cams and I have never run a h-roller cam before
It's their recommended cam for motors like VETDRMS or street strip motors in the 406-427 ci range.
I just don't want to have anymore to do with comp cams and I have never run a h-roller cam before
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: 406 Cam Suggestions (QuickVet)
QuickVet - when you get into small blocks over 400 ci it's surprizing how large of cams that you can run and still maintain streetability. I have run as small as 232 intake duration of roller cams and now 240 intake. I don't think that you would have issues until @250 intake at .050
What you really need to think out with the help of some Desk top dyno program is where do you want your max hp and tq to occur. IMO the best idea is to have max hp occur 600 - 800 rpm below the intended red line. That way you still have power, but its tappering off as you approach red line.
The reason that I'm selling the comp cams is it's the second time that they have promised a small base circle cam and both of them have been 1.050 inches.
It's okay to use that size cam with large H-beam rods in 3.750 stroke motors. But I'm building a 4 inch stroke and we had to grind all the rods and rod bolts to clear this H-roller cam. We got it to clear after lots of grinding. I'm just going to use solid rollers and an off the shelf Crane solid roller cam. Which really are .900 inch base circles.
What you really need to think out with the help of some Desk top dyno program is where do you want your max hp and tq to occur. IMO the best idea is to have max hp occur 600 - 800 rpm below the intended red line. That way you still have power, but its tappering off as you approach red line.
The reason that I'm selling the comp cams is it's the second time that they have promised a small base circle cam and both of them have been 1.050 inches.
It's okay to use that size cam with large H-beam rods in 3.750 stroke motors. But I'm building a 4 inch stroke and we had to grind all the rods and rod bolts to clear this H-roller cam. We got it to clear after lots of grinding. I'm just going to use solid rollers and an off the shelf Crane solid roller cam. Which really are .900 inch base circles.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: 406 Cam Suggestions (gkull)
My custom HR cam is Comp Cams
Grind # CS 3317s/3318s hr110.0
242/248 lobe lift of .360/.375 .540/.562 with 1.5's
Probably big for your 406 unless your aim is hot street strip
Grind # CS 3317s/3318s hr110.0
242/248 lobe lift of .360/.375 .540/.562 with 1.5's
Probably big for your 406 unless your aim is hot street strip
Melting Slicks
Joined: Jun 2002
Posts: 2,843
Likes: 99
From: Orrtanna Pa.
Re: 406 Cam Suggestions (gkull)
Mines a Comp XE-284 hydraulic with 240/246 @ .050 running with 10.0:1.Idles at 650 with the fenders shaking,but will rip to 6500 easy.Most build ups like mine seem to be fairly close to 500hp/500lbs,but I've not dynoed to confirm.
I have on occasion had power brake problems,but it is not consistant. I wouldn't go bigger for a street driver though.
I have on occasion had power brake problems,but it is not consistant. I wouldn't go bigger for a street driver though.
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Burning Brakes
Joined: Oct 2001
Posts: 1,146
Likes: 0
From: Milford NH
Re: 406 Cam Suggestions (QuickVet)
Well, Air Flow Research has some of the best flowing heads around. If you look on thier website ( www.airflowresearch.com ), they have dyno's posted. For thier 406 cu in engine, they have a 10.3 compression with thier 210 heads and a Lunati Hyd. Roller Cam 232°/242°
0560-.570 lift W/ 1.6 Rockers. Very impressive torque numbers. 550 HP. 540 # of torque @ 5000 RPM. 463# at 2500.
0560-.570 lift W/ 1.6 Rockers. Very impressive torque numbers. 550 HP. 540 # of torque @ 5000 RPM. 463# at 2500.
