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  1. #16
    Join Date
    Jun 2012
    Location
    D/FW, Tx
    Posts
    537
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    Looked at my own sig. I've swapped the 373 for a 306
    The 3.73 was just too deep. Not enough tire and I lost lots of gas mileage.
    2005 Dodge Magnum RT.
    12/2016 - Inertia big valve heads, Eagle intake, non-MDS lifters, Spartan Plus cam, Shorty headers. 390 RWHP, 390 RWTQ. (Work by Inertia)
    01/2017 - Bilstein shocks, SLP 25% underdrive pulley. s/b 400 RWHP, 400 RWTQ now. (Work by me)
    10/2017 - Replaced engine mounts with 392SRT manual transmission, added police oil cooler, additional PS and Trans coolers, Mishimoto radiator. (Work by me)
    10/2017 - Replaced Torque Converter with FTI 3,200RPM, Installed 3.06:1 Getrag kit, one piece Al DSS DS, Billy Boat 3" Exh.
    11/2017 - Wilwood brakes with 15" front brakes. (Work by me)



  2. #17
    Join Date
    May 2014
    Location
    Virginia Beach, VA
    Posts
    2,160
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    Is the compression with stock 6.1 heads and gaskets on the pre eagle 5.7 above 11:1? Is it really a problem on 93?

    I know this is a totally different engine family, but on my old LS stuff 11:1 was what they came from the factory with, and 11.5:1 and higher was fine with good tuning on 93.

    Sent from my SAMSUNG-SM-N900A using Scat Pack Forums mobile app
    2006 Dodge Charger Daytona TorRed #1354, MagnaFlow - Tune - Gears - [email protected]
    Watch SaabKyle review my old Charger Scat Pack: https://www.youtube.com/watch?v=m6OA...ezVy7g&index=3

    I detail cars in the Virginia Beach/Norfolk area! 757-435-4027


  3. #18
    Join Date
    Dec 2016
    Location
    Charlotte NC
    Posts
    272
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    For what it's worth I just did a head,cam and SRT shorty swap onto my 05' 300C 5.7. The complete parts run down was an adjustable timing set, Hellcat lifters, 5/16" chrome moly push rods, SRT 6.1 oil pump, SRT shorty headers and factory SRT mid pipes, 6.1 intake manifold, ported big valve (2.08") pre Eagle heads....when I say ported I mean these things put other ported heads to shame. PSI 1511 springs and the cam is a little bigger specs than a SRT MAX PLUS cam and runs a LSA110. She is tuned by Johan. On the highway I only lost about 1mpg and am now getting 22mpg. Now around town, in the city mileage really tanked and I now get around 15 mpg or so. The lsa 110 I'm sure doesn't help. It's a lot of overlap after all. But if you are doing all of this work gas mileage is not something you should be worried about.
    Thanks Beach Goat thanked for this post

  4. #19
    Join Date
    Mar 2016
    Posts
    1,851
    Post Thanks / Like
    Quote Originally Posted by Beach Goat View Post
    Is the compression with stock 6.1 heads and gaskets on the pre eagle 5.7 above 11:1? Is it really a problem on 93?

    I know this is a totally different engine family, but on my old LS stuff 11:1 was what they came from the factory with, and 11.5:1 and higher was fine with good tuning on 93.

    Sent from my SAMSUNG-SM-N900A using Scat Pack Forums mobile app
    It depends on the cam events. You may or may not be able to run 11:1 on pump.


    Sent from my iPhone using Scat Pack Forums

  5. #20
    Join Date
    May 2014
    Location
    Virginia Beach, VA
    Posts
    2,160
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    I'm going to piggy back this thread, since I'm doing the same swap. I've got the heads coming, the cam in hand, and an SRV manifold sitting in the garage.

    Sent from my SAMSUNG-SM-N900A using Scat Pack Forums mobile app

  6. #21
    Join Date
    Oct 2016
    Posts
    65
    Post Thanks / Like
    I am waiting on fuel prices to go down befor i decide to throw the parts on. I daily her and dont wanna go broke haha

    Sent from my SM-G955U using Scat Pack Forums mobile app

  7. #22
    Join Date
    Oct 2016
    Posts
    65
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    Quote Originally Posted by [email protected] View Post
    I tried to post here with little results as well. As of now I have a 2006 pre eagle charger. I have
    fully assembled 6.1 heads
    6.1 intake with all sensors and pcv valve
    6.1 headers, mids, catback
    6.1 Injectors (may or may not use them)
    6.1 pushrods
    6.1 lifters to toss MDS
    6.1 intake gaskets
    6.1 exhaust gaskets
    5.7 3.950" bore cometic head gaskets. .051 thick to bring compression from 11:1 down to 10:4-6 so you can run 91-93 octane

    And diablotoona/johan can email tune you but I'm going to try and run it with my superchip programmer before I have to buy a Diablo. His tunes are 200-700 depending.
    And as far as mileage and power. Looking at 20-40 hp off the compression jump and intake. Plus you will make power after 5500rpm.


    Sent from my XT1585 using Tapatalk
    Did the 5.7 gaskets work? I was told id need the 6.1 gaskets

    Sent from my SM-G955U using Scat Pack Forums mobile app

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