What heads for 410?
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Cross-Country
Joined: Jan 2002
Posts: 91
Likes: 1
From: CT
What heads for 410?
Im trying to figure out what head to use for my 410. It will be used for offroading and a couple street stock truck pulls for fun. I have a set of c6ae-r and a set of c3ae. The c3ae doesnt have a letter after it. It has what looks like to be a little nub before and after the number with no room for anything else. I want to keep the 10.5 compression that the motor had stock. I am thinking about running the performer setup for this motor. Any thoughts?
Post Fiend
Joined: Jan 2003
Posts: 8,600
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From: Iowa
I would use the C3AE heads, as they should have larger ports. Either set of heads will need hardened exhaust valve seats put in so the motor will survive on unleaded gasoline.
Now for the fun part:
Dont run the Performer setup. The cam is way too small. If you want to run aftermarket parts, run the Performer RPM manifold. Then run an aftermarket cam of your liking. I am partial to the Crane 343941, but run what you feel would best suit your needs. Also pick one to match the compression you will be running so it doesn't ping.
The only pistons I can find for a 410, are dished. I think it's a 15cc dish. Part number is STL-381P. Even with a .020" thick head gasket, that would leave you at 9.63:1 compression, assuming 72cc combustion chambers. I know it's not what you were looking for, but it's the best I can find.
Now for the fun part:
Dont run the Performer setup. The cam is way too small. If you want to run aftermarket parts, run the Performer RPM manifold. Then run an aftermarket cam of your liking. I am partial to the Crane 343941, but run what you feel would best suit your needs. Also pick one to match the compression you will be running so it doesn't ping.
The only pistons I can find for a 410, are dished. I think it's a 15cc dish. Part number is STL-381P. Even with a .020" thick head gasket, that would leave you at 9.63:1 compression, assuming 72cc combustion chambers. I know it's not what you were looking for, but it's the best I can find.
Last edited by rusty70f100; Oct 20, 2005 at 06:35 PM.
Senior User
Joined: Sep 2003
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gas
Ive got a 422 and with 390 8.2:1 pistons and D2TEAA (72cc) heads I got 9.7:1. I run 91 octane and im rung on the border line i ping. If I advance it a little too much, she pings real bad. Im assuming your going to run race gas only with 10.5:1.
Postmaster
Joined: Jul 2003
Posts: 3,934
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From: iowa
the c6ae-r is one of the poorman 428cj head selections. Either head should work fine, do some work on them. Skip the performer package, there's no more performance than stock. The rpm intake is good a blue thunder is better.
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Cross-Country
Joined: Jan 2002
Posts: 91
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From: CT
This website http://www.fastengineparts.com/sub_c...hp?mid=2&id=39 has both the 390 low compression pistons and the 410 pistons. Why does it say that the 410 pistons only have a compression ratio of 8.2?
Postmaster
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From: iowa
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Post Fiend
Joined: Jan 2003
Posts: 8,600
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From: Iowa
TD, those are the same pistons I was talking about above. Note that the part number they list for their 390 pistons and the 410 pistons is 381P. It's the same piston.
I dont think you're going to find what you're looking for.
I dont think you're going to find what you're looking for.
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Cargo Master
Joined: Aug 2000
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From: SW Michigan
heads, pistons
TD, you can use either set of heads and be just fine. The combustion chambers are about the same. But on the pistons, yeah, you can mill a set of L2291Fs down to the right height. But you'd end up with even more compression than stock. I have 2291s in my 421, and yes you have to cut a new notch for the valves. But with 10.5 or more you won't be running it on pump gas, even premium. Where do you live, and what can you get for fuel ? You might want to start with the 381P and open up the dishes in them a bit, if that is possible. DF, @his Dad's house
Posting Guru
Joined: Oct 2005
Posts: 1,235
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that crane cam rusty's talking about runs HARD in a 390 in a mud bogger and mud dragger.. i don't know what you wanta spend but that cam/intake package really likes heads with the 1.65 exhaust valves.. i had the machine shop relieve the chambers by the exhaust valve not only for flow but to help on compression a bit- worked great for me..
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Post Fiend
Joined: Dec 2003
Posts: 6,658
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From: "Islander"
Been running a 410 (414) the last 18+ years with 247K (best sweet motor so far) with Silvolite pistons, C4AE 6090G heads (2.09-1.70) F-427 intake w/ 670 that yields 9.0:1 CR. With todays crap gas I run Mid on the highway, Reg around town. Last weekend on a 617 mile trip, 14.168 @ 67 mph up, return 12.62 @ 78 mph return average with a C-6. I would rather have high advance low compression than a high compression motor with a detonation death wish. I would feel guilty to yank the 414 for a 482 as she runs great. The old 270/290 CJ cam may be small but the mileage returns are practical with todays wallet rape prices.
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Posting Guru
Joined: Oct 2005
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Thats sweet miileage!!! i averaged about 12.5 with my setup on regular gas.. but i had extensive distributer work done to pull it off... had to run premium to race though... if you run the old fireball 308 crane cam it'll bleed off enuff pressure to help your compression- but there is no power for big tires until 3000 rpm's, but when the power band hits- it hits hard!!!
Post Fiend
Joined: Dec 2003
Posts: 6,658
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From: "Islander"
I run 12 x 33 x 16.5 rear tires (32.5"dia) with 3.54 gears and a custom low stall converter that starts pulling the truck at 800 rpm's. I built a practical truck to drive everyday, sorry not a street drag truck as 4,800 pounds isn't going to beat a 200 hp Toyota, whats that prove? Mind you I run up to 5,000 at times. Torque at a practical rpm zone has worked for me at over 1 million miles, 2 trucks and only 3 motors and still on the 3rd motor. As far as dizzy work, you tune each dizzy to the motor used as "general do all specs" don't apply as each motor is different like women (damn true) tune for the best you can get from that motor for the grade of fuel you want to use provided you used the right parts, cam, compression, heads, intake, carb, gearing, ect...
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Last edited by "Beemer Nut"; Oct 24, 2005 at 08:59 PM.