FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: CaptCobrajet on February 06, 2018, 08:28:35 PM
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As some folks know, I keep a few "shop" 390 builds in the pipeline here amongst the normal head/manifold and engine jobs. I have decided to do another 390 shootout. I have two nice shortblocks together, so we're gonna do it again. Both will get my "baby roller" .525 lift solid roller. The cam is streetable, mostly because of the low lift, but it is one MEAN .525 lift cam. These engines will idle ROUGH, and will be "RPM happy". They won't wake up until around 3000 rpm, and won't be through until after 6500. One will have a set of C4AE-G heads with very similar flow and capabilities as the iron CJ heads in the first Duel. The other will get the TFS heads that I bought for testing. They will receive the Tennessee Tune-Up, but nothing too serious. Both will have the same high quality bolt-on rocker systems capable of handling the required 550 lb. open pressure. Compression ratio will be the same on both. If I can get the iron head to 11:1 without too much milling, that is what both will be. I'll make the TFS equal to whatever I am bound to on the iron head. I won't mill more than .060 off the heads, for the sake of reliability and fit-up of the parts. If the TFS manifolds become available in time, both will get that. If not, they will probably get Street Dominators or Streetmasters. I'm just doing it for entertainment and information, but both engines will be sold after the testing, just because I can't sit them in the corner and I'll need to recoop the funds.
The TFS engine has Scat rods and light CP pistons. The "G head" engine has a properly worked set of OEM rods, and a set of CP Stock Eliminator pistons. With the help of spacers, they will get the same ring package. The light piston won't show any extra power on a dyno, and I think the iron head engine will be getting tired after 7000 rpm, so the stock rods should live there. The TFS piece will peak power around 7000 with this little cam, so I probably won't run it past 7500. All in good fun, and should be interesting! Stay tuned.......
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This forum is great for "shootouts" ;D Can't think of a better way to compare stuff, especially when the long blocks are so identical. Can't wait to see the results of the TFS heads vs the factory C4's.
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I was hoping you’d do a BBM/TFS test....
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I plan to do that, but not on this test. I gotta eat, and I have this stuff here for these two. The 3.0 test 390s will be next......
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I plan to do that, but not on this test. I gotta eat, and I have this stuff here for these two. The 3.0 test 390s will be next......
Ahh, eating is overrated. So is sleep 8)
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Awesome, can't wait to see some results, and the follow up BBM vs TFS as well. Plus any details about fitting the TFS heads, regarding the rocker arms/pushrods etc.
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I plan to do that, but not on this test. I gotta eat, and I have this stuff here for these two. The 3.0 test 390s will be next......
Ahh, eating is overrated. So is sleep 8)
My stomach says different on a daily basis. :o
And this is my kind of entertainment.
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Very cool to have another set of 390s. I know everyone is going stroker setups now, but plenty of solid 390s out there that could get a nice update with a new topend. I'm pulling the 390 out of my car right now to pop some BBMs in it with a little hydro roller to give it a little more punch.
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I'm betting on the 390 .
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I think this needs to be video'd! Right up my Sunday morning ritual of coffee and watching car shows! Would beat anything out there program wise right now! Tennessee Tune Up! I like it. Right up there with an Arkansas Adjustment 8).
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I can't sit them in the corner and I'll need to recoop the funds.
Yeah, not everyone can find a sweet FE sitting in the corner of their garage (except Alan maybe ;D), I know, I looked. Looking forward to following along. Who knows, if the funds come along my F100 might want to get involved when all is said and done. Nothin' wrong with a 300 but just sayin'...
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Hope that "Tennessee tune-up" is not like the "Arkadelphia swell" when it comes to dyno testing! LOL. Joe-JDC
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Dies anyone have a link to 390 Dual 1.0? I can't seem to find it with the search
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http://fepower.net/simplemachinesforum/index.php?topic=2247.msg21200#msg21200