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New 401 Build |
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Robeb 
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Joined: Jan/04/2017 Location: Colorado Status: Offline Points: 12 |
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 Topic: New 401 BuildPosted: Jan/04/2017 at 1:15pm |
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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
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Joined: Jan/04/2017 Location: Colorado Status: Offline Points: 12 |
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Posted: Jan/04/2017 at 1:41pm |
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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
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Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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Posted: Jan/04/2017 at 1:58pm |
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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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Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
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Robeb
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Joined: Jan/04/2017 Location: Colorado Status: Offline Points: 12 |
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Posted: Jan/04/2017 at 2:20pm |
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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
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Joined: Feb/10/2013 Location: Michigan Status: Offline Points: 24 |
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Posted: Jan/04/2017 at 2:20pm |
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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
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Joined: Jan/04/2017 Location: Colorado Status: Offline Points: 12 |
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Posted: Jan/04/2017 at 2:25pm |
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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
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Joined: Jan/04/2017 Location: Colorado Status: Offline Points: 12 |
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Posted: Jan/04/2017 at 2:37pm |
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Had not seen all the bad reviews on Indy before!
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Robeb
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Joined: Jan/04/2017 Location: Colorado Status: Offline Points: 12 |
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Posted: Jan/04/2017 at 2:38pm |
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6500 - 8000 feet
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jcisworthy
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Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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Posted: Jan/04/2017 at 3:00pm |
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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. |
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Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
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jcisworthy
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Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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Posted: Jan/04/2017 at 3:33pm |
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With that set up at 6500' your dynamic should be closer to 8
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Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
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