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New 401 Build

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Robeb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robeb Quote  Post ReplyReply Direct Link To This Post Topic: New 401 Build
    Posted: Jan/04/2017 at 2:15pm
Traded my T-Bucket for a 1973 Javelin AMX that instead of the original 401 has a Chrysler 440. I am working on a 401 build and would like to get input from the experienced people here on the forum.

Info on build plan:

Block: Fresh bore to 45 over from used 30 over block
Pistons: Weisco ProTru 45 over flat top
Heads: Indy 401-SRK aluminum replacement head kit (61cc heads)
Cam: Considering Lunati Voodoo 10100702 hyd (previous part no 64502)
   Duration @ .050 220/226
   LSA/ICL: 112/108
   Intake close: 38deg ABDC
Water/Meth injection: Snow Performance Stage 2 Muscle Car kit
Fuel: race and/or premium (91) with water/meth injection
Compression calculation: 11.2 Static, 10.3 Dynamic at sea level,
   9.0 Dynamic at 6500 ft alt. (live at 7000)

I believe the 45 over is pushing it but already picked up two used engines and this is the best block & crank.
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Robeb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robeb Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 2:41pm
Link to cam spec:
http://lunatipower.com/CamSpecCard.aspx?partNumber=64502

Link to Indy aluminum cylinder head info:
http://www.indyheads.com/images/price.2015.14.pdf

Link to Snow Performance injection kit:
http://www.snowperformance.net/Stage-2-Muscle-Car-Water-Methanol-Injection-Kit-p/220.htm

+ forgot to mention plan on using Eddy air gap intake.
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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 2:58pm
Heads are not a good choice for that combo. Either use factory iron or Edelbrock heads. 

What is your altitude there? 


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Robeb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robeb Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 3:20pm
Not the indy aluminum race heads but the indy aluminum stock replacement heads. Is there a great difference between the Indy Stock aluminum and the Edelbrock?

Altitude here in and around the city ranges between 6500 and 8000 ft (excluding driving up Pike's Peak). I live at 7000.
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syracing View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote syracing Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 3:20pm
I wouldn't give Indy my money after reading this:
http://www.yellowbullet.com/forum/showthread.php?t=125752
NSFW (language)
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Robeb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robeb Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 3:25pm
I liked the Indy heads for the better quench design, slight compression reduction, aluminum allowing higher compression and the cost is the same as rebuilding my iron heads with a good valvetrain. I ended up with new Weisco PT flat tops from one engine purchase so trying to work with limiting the compression a bit.
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Robeb View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Robeb Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 3:37pm
Had not seen all the bad reviews on Indy before!
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Robeb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robeb Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 3:38pm
6500 - 8000 feet
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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 4:00pm
Sorry, I missed the altitude in the first post. 

At that altitude the cam and compression should work fine on pump gas. 

The Indy heads will work but I think Edelbrock or iron heads will work better for the rpm you will turn with that combination. 
It is easy to dodge our responsibilities, but we cannot dodge the consequences of dodging our responsibilities.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Jan/04/2017 at 4:33pm
With that set up at 6500' your dynamic should be closer to 8
It is easy to dodge our responsibilities, but we cannot dodge the consequences of dodging our responsibilities.
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