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New Stroker Combo Going Together - Thoughts? #2042869
03/31/16 06:31 PM
03/31/16 06:31 PM
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MD
JACK1440 Offline OP
mopar
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Well I have a new short block going together. I finally decided on a Bill Mitchell aluminum block due to the lack of iron out there. It's a 557 cu in (4.5 bore x 4.375 crank), flat top gas ported pistons, total seal rings, steel rods. Should be around 14 to 1 with my heads. Haven't picked a cam yet. Here's the challenge.... I'm putting a small head on the motor with hopes of upgrading in a few years. The current heads are EZ-1's from compuflow (345int / 245exh). Now that I'm way into the build I have fears it's not going to make that much power due to the small head. The top end is a single 4 Indy intake with a 1050 pro systems dom. Thoughts? Cam specs?

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2042884
03/31/16 06:48 PM
03/31/16 06:48 PM
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"Little"John
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Screw it together and go have FUN as it will run great. Without knowing exactly how fast you want to go I did about the same thing. When I built my Keith Black 572 the cam was spected for my B1 heads but My Indy 440-1 heads were ready sitting on the shelf so I threw them on. At that time they were flowing under 350cfm and although my Daytona was light (2300 pounds) it still went 8.40@160mph with a bad brand new BG400 fuel pump on it. Cam was in the 800 plus lift area, Indy intake, 1050 carb.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2042937
03/31/16 08:23 PM
03/31/16 08:23 PM
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JACK1440 Offline OP
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That's what I'm thinking. The car will be lighter with the aluminum block. Should be around 3300 with me. I'd like to see 9.30's on a good day. I'd be happy with that.

Other info: 5000 stall, 727, 4.88 in a Dana

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043190
04/01/16 12:05 AM
04/01/16 12:05 AM
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AndyF Offline
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Depends on how much lift you're going to throw at it. I have EZ heads on my 514 and it goes over 900 hp on the dyno. No doubt it would make more with bigger heads but no reason you can't make more than 800 hp with your combo as long as you give it some cam.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043323
04/01/16 07:48 AM
04/01/16 07:48 AM
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JACK1440 Offline OP
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Thanks guys, I'm starting to feel better about this. My current springs bind at .75. Sounds like I may need to go to a spring that allows more lift. I also run 1.5 rockers might need 1.6.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043335
04/01/16 08:42 AM
04/01/16 08:42 AM
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"Little"John
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I went with 1.7 rockers on the B1's and I think 1.65's on the 440-1 heads. The only other thing you may want to consider is if and when you want to step up to a different head are the pistons valve reliefs going to be OK. My pistons were Wiseco Pistons made for 440-1 heads so I had Tom Hemphill go ahead and cut them for my B1 heads so the engine was balanced and ready for the switch-over.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043460
04/01/16 01:03 PM
04/01/16 01:03 PM
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JACK1440 Offline OP
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good thinking... it did cross my mind. I do like the B1's.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043474
04/01/16 01:24 PM
04/01/16 01:24 PM
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Originally Posted By JACK1440
Thanks guys, I'm starting to feel better about this. My current springs bind at .75. Sounds like I may need to go to a spring that allows more lift. I also run 1.5 rockers might need 1.6.


Well you aren't going to make a ton of power with 1.50 rocker arms. You have to run a 0.500 lobe lift cam to get .750 valve lift and that is just about the end of the line for a stock Mopar setup. At 0.500 lobe lift you start to run into problems with the oil gallery unless you have bushed lifter bores.

On my EZ heads I run 1.85 Jesel rocker arms and .890 lift. But it takes a serious investment in time and money to make that happen. It is easier to switch heads than to put that much work into a set of EZ heads.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043489
04/01/16 01:47 PM
04/01/16 01:47 PM
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JACK1440 Offline OP
mopar
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Thanks Andy. I'm seriously thinking going to a 1.6 - 1.7 rocker to get in the .800 lift range and live with the heads for a while. I do have bushed lifter bores. My engine builder prefers the higher ratio rockers.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043516
04/01/16 02:09 PM
04/01/16 02:09 PM
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Monte_Smith Offline
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Originally Posted By JACK1440
Thanks Andy. I'm seriously thinking going to a 1.6 - 1.7 rocker to get in the .800 lift range and live with the heads for a while. I do have bushed lifter bores. My engine builder prefers the higher ratio rockers.
You buying rockers anyway......put some ratio on it. Go 1.8s

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043630
04/01/16 04:24 PM
04/01/16 04:24 PM
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JACK1440 Offline OP
mopar
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Thanks Monte. Which companies out there make a rocker larger then 1.6 besides jesel?

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043631
04/01/16 04:26 PM
04/01/16 04:26 PM
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pittsburghracer Offline
"Little"John
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T&D for one


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2043931
04/01/16 10:17 PM
04/01/16 10:17 PM
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My advice is that if you're going to push the lift up into the 0.800 range then you really do want to invest in some high quality rocker arms such as T&D. I converted my EZ heads over to Jesel rocker arms but that takes machine work and some special parts so that isn't the path for everyone. A T&D shaft system should be a bolt on and T&D makes killer parts. But anything over 0.800 lift becomes an R&D project. You'll need to spend some time sorting out retainers and locks and spring cups to get enough installed height. You'll also need to spend some time researching valve springs in order to find a set that clears the rocker arms but still has the capability of handling .800+ lift. Unless you're really familiar with all of this work you might be better off sending the heads to Porter Racing and just having Dwayne sort it all out for you. He can do this stuff in his sleep. Or maybe CompuFlow already set the heads up for you??

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2044049
04/02/16 12:08 AM
04/02/16 12:08 AM
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JACK1440 Offline OP
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Nick did set the heads up completely from machine work to springs and retainers. He set everything up for the .750 lift comp roller he had ground for the last motor. Not sure if the retainers are correct for the higher lift. I do know I would have to go to the next comp spring to get past the coil bind. Maybe it's best like you said to have them looked at by a pro.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2044082
04/02/16 12:47 AM
04/02/16 12:47 AM
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Its a TRAP!
DARTH V8Я Offline
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Its a TRAP!
You're gonna need around 800hp for those 9.30's. 345cfm cam in the .770ish range should get you there. Your well on your way buddy.


When it takes more than a sweet mullet to prove you rule at the trailer park..
Re: New Stroker Combo Going Together - Thoughts? [Re: DARTH V8Я] #2044106
04/02/16 01:17 AM
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Heck yea go for it Jack. I knew Andy F. has made 800 hp on EZ heads as he states that in his Mopar eng book. Build it and you might be surprised how good it will run. up Good luck to you and dad with it and tell your dad to let me know when you guys are ready to take it out with the new eng. Ron

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2044255
04/02/16 10:02 AM
04/02/16 10:02 AM
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JACK1440 Offline OP
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Thanks guys. To be continued.....

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2044448
04/02/16 02:22 PM
04/02/16 02:22 PM
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Originally Posted By JACK1440
Nick did set the heads up completely from machine work to springs and retainers. He set everything up for the .750 lift comp roller he had ground for the last motor. Not sure if the retainers are correct for the higher lift. I do know I would have to go to the next comp spring to get past the coil bind. Maybe it's best like you said to have them looked at by a pro.


Okay, if you already have a complete combo designed to work at .750 then I'd bolt it together and run it. It might make the power that you need and it might not but you might as well try it. Run it a season and then you'll know.

Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2044531
04/02/16 04:41 PM
04/02/16 04:41 PM
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I finished dyno testing a 511 C.I. 400 iron block stroker motor for a local customer yesterday with a set of Indy 440 EZ M.W. intake port size heads, I don't know how to tell if thier the 295 or 345 versions help, with a old Comp Cams solid lifter cam, 275@.050 with .635 net lift with checking springs, 12.0 to 1 compression on 108 octane race gas. I was disappointed with the 655 HP it made with a Indy 400-2 intake and the Proform 950 CFM carb. whiney I tried a Holley 1050 CFM Dominator with the tapered adapter and it didn't pick up 2 hp with simialr AFR confused I should have used a set of 440-1 CNC ported heads I have on that short block instead of those EZ down Hindsight is always 20/20 work shruggy

Last edited by Cab_Burge; 04/02/16 04:42 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: New Stroker Combo Going Together - Thoughts? [Re: JACK1440] #2044548
04/02/16 04:59 PM
04/02/16 04:59 PM
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So. Burlington, Vt.
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Cab, EZ heads can make good power, but if you're running basically ootb EZ-1's, you're definitely leaving power on the table. If that motor had CNC 295's or 325's on it, it should have made quite a bit more power than that.

My feeling for the OP's build...... 345cfm EZ's (from my bench) would represent mildly cleaned up heads. Not what I would use if I were anticipating making 800hp.
That being said, I'd still use them as is, with a suitable cam that will work with the hardware that's already on the heads.
Save your money and use it towards bigger heads that are more in line with those power levels(800hp+).

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