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#2448340 - 02/08/18 12:38 AM Re: 6.4 BGE specs [Re: WO23Coronet]
70blackfish Offline
master

Registered: 01/25/03
Posts: 4147
Loc: SO. CAL.
I had a new crate 6.4 BGE, for sale and it took a year to sell. everyone wanted a srt 6.4.
now there the cool engine to build it sounds like...
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10.30 @132mph
496 big block, Solid Roller, Ported Victor Heads.
8 inch converter, pro trans. Cal-tracs.
dana 60 4.10 w/locker.
Street Car. SOLD...........

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#2451812 - 02/14/18 05:08 PM Re: 6.4 BGE specs [Re: WO23Coronet]
gts95 Offline
mopar

Registered: 06/14/04
Posts: 516
Loc: D/FW
Can someone advise what head gaskets would be used utilizing a BGE shortblock and Eagle heads? Is there a difference in the factory headgaskets between the BGE and Apache engines?

I'm wondering what options I would have to help me determine what approx. compression I would have with the BGE and Eagle heads given they are a small chamber than the Apache heads.
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1970 Super Bee, WM21, 383, auto, FY1, a/c, project! 1971 Chrysler 300 2dr, U-code, console car 1980 Chrysler LeBaron LS Limited coupe 2008 Chrysler Aspen, HEMI 2011 Ram 3500 MegaCab, 6.7

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#2454054 - 02/19/18 03:40 PM Re: 6.4 BGE specs [Re: gts95]
MattW Offline
master

Registered: 06/02/05
Posts: 2655
Loc: Ontario Canada
Always heard to use the gasket that goes with the block.
The compression is questionable. Im thinking the BGE comp is going to be low due to being a workhorse. No proof and eagle head BGE combo should net 9.5 to one or less?
You can play a bit with compression with gaskets.
Matt

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#2454098 - 02/19/18 04:58 PM Re: 6.4 BGE specs [Re: WO23Coronet]
HotRodDave Offline
master

Registered: 01/29/05
Posts: 9897
Loc: Kalispell Mt.
The BGE is 10.0 and the eagle heads are a few CC smaller so it should be getting close to 10.5 with factory thickness gaskets, 87 octane range for a new hemi.
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#2506120 - 06/08/18 10:32 PM Re: 6.4 BGE specs [Re: L4staero]
Christian74 Offline
member

Registered: 05/10/18
Posts: 5
Loc: Ny usa
They are hellcat heads !!!! With 6.4 bolt pattern!!!! 100% sure and it’s forged the only problem with the short block is Mds!

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#2506121 - 06/08/18 10:33 PM Re: 6.4 BGE specs [Re: gts95]
Christian74 Offline
member

Registered: 05/10/18
Posts: 5
Loc: Ny usa
No same gasket use cometic .54

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#2506122 - 06/08/18 10:35 PM Re: 6.4 BGE specs [Re: WO23Coronet]
Christian74 Offline
member

Registered: 05/10/18
Posts: 5
Loc: Ny usa
This is a great engine!! And sort of a secret,just get rid of Mds and your basically a hellcat! Short block

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#2506384 - 06/09/18 08:00 PM Re: 6.4 BGE specs [Re: Christian74]
L4staero Offline
member

Registered: 09/10/11
Posts: 90
Loc: Australia
Originally Posted By Christian74
This is a great engine!! And sort of a secret,just get rid of Mds and your basically a hellcat! Short block


Not really basically a Hellcat short block. Runs a HC block with a std 6.4 crank (HC is stronger) powdered metal rods and cast pistons. Basically a 6.4 car short block with slightly lower comp, slightly more material above the top ring and a block with slightly better cooling. Still cast pistons!

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#2506493 - 06/10/18 06:28 AM Re: 6.4 BGE specs [Re: Christian74]
ric3xrt Offline
pro stock

Registered: 01/13/06
Posts: 1239
Loc: Trumbauersville PA
Originally Posted By Christian74
They are hellcat heads !!!! With 6.4 bolt pattern!!!! 100% sure and it’s forged the only problem with the short block is Mds!


No they are not Hellcat heads, they are close, same alloy and flow characteristics, but you can't use them with a Hellcat intake system....been there and it's not pretty.



Truck short block and Eagle heads with stock head gaskets = 11.1:1 compression.
SRT392 Sort block ,stock head gaskets and Eagle Heads = 11.5:1 compression
Truck rods are not the same as Hellcat/Demon, but they are BOTH Forged powder metal rods. beams are slightly different in the HC/D engines.

Same timing chain and tensioners,
They do not use the same Cam...non of them do,
SRT392 has two cams(same lift, 574/541 different lobe patterns)
Hellcat has it's own cam (less Intake lift than 392 561/551 but more Exhaust duration)
Demon has it's own cam(same lift as the Hellcat but even more exhaust Duration)
Truck has it's own cam...I forget the specs and honestly don't care.
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Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View




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#2506494 - 06/10/18 06:35 AM Re: 6.4 BGE specs [Re: Christian74]
ric3xrt Offline
pro stock

Registered: 01/13/06
Posts: 1239
Loc: Trumbauersville PA
Originally Posted By Christian74
This is a great engine!! And sort of a secret,just get rid of Mds and your basically a hellcat! Short block



Yes it is a great short block

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#2507568 - 06/12/18 02:32 PM Re: 6.4 BGE specs [Re: ric3xrt]
cudadoug Offline
master

Registered: 08/22/03
Posts: 3076
Loc: Between a rock & a hard place
Originally Posted By ric3xrt
Originally Posted By Christian74
They are hellcat heads !!!! With 6.4 bolt pattern!!!! 100% sure and it’s forged the only problem with the short block is Mds!


No they are not Hellcat heads, they are close, same alloy and flow characteristics, but you can't use them with a Hellcat intake system....been there and it's not pretty.



Truck short block and Eagle heads with stock head gaskets = 11.1:1 compression.
SRT392 Sort block ,stock head gaskets and Eagle Heads = 11.5:1 compression
Truck rods are not the same as Hellcat/Demon, but they are BOTH Forged powder metal rods. beams are slightly different in the HC/D engines.

Same timing chain and tensioners,
They do not use the same Cam...non of them do,
SRT392 has two cams(same lift, 574/541 different lobe patterns)
Hellcat has it's own cam (less Intake lift than 392 561/551 but more Exhaust duration)
Demon has it's own cam(same lift as the Hellcat but even more exhaust Duration)
Truck has it's own cam...I forget the specs and honestly don't care.


Easy peasy for compression and bigger cubes, but very little camshaft will fit, right? I have been told that there is even less room than a pre-2009 5.7 with eagle heads. Can anyone confirm this?

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#2511248 - 06/21/18 08:42 AM Re: 6.4 BGE specs [Re: WO23Coronet]
ric3xrt Offline
pro stock

Registered: 01/13/06
Posts: 1239
Loc: Trumbauersville PA
Comp Cams 274 will fit in the Apache engines if the cam phaser is locked. the 274 is .619/.612

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#2512936 - 06/25/18 08:55 AM Re: 6.4 BGE specs [Re: WO23Coronet]
moparmitch Offline
member

Registered: 02/16/10
Posts: 140
Loc: MI, USA
Here's a FB video from 2015 with SRT rep reviewing Apache vs Hellcat head. You can notice the darker 356 material as well as the additional cast gussets on the deck surface for reinforcement and extra strength. I believe the BGE heads use the same casting as it would make sense for a commonality/production of heavy duty castings.

https://www.facebook.com/moparmusclemag/videos/10153679527602792/?fref=nf

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#2529709 - 07/31/18 06:47 PM Re: 6.4 BGE specs [Re: L4staero]
Christian74 Offline
member

Registered: 05/10/18
Posts: 5
Loc: Ny usa
I didn’t mean or say the pistons rods etc I’m referring strictly to the block and heads of BGE and they are exact hellcat material,extra cooling passages in the block 100%
The heads are exact with 6.4 bolt pattern that’s a fact t 356 alloy and mold difference is in bolt pattern!! As far as the entire shortblock I don’t know if it’s forged or not I’ve heard both yes and no but idk .I have the block with all forged internals so I’d assume it isn’t forged stock or it’s a secret ,really there is a LOT of info vendors do NOT want out .Imho it’s a great bare block meaning hellcat grade and same for the heads

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#2529711 - 07/31/18 06:49 PM Re: 6.4 BGE specs [Re: WO23Coronet]
Christian74 Offline
member

Registered: 05/10/18
Posts: 5
Loc: Ny usa
Btw 5.7 heads have larger combustion chamber (open) as opposed to the 6.4 closed 73cc or so but obviously the 6.4 heads are superior for cfm etc

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#2529735 - 07/31/18 07:31 PM Re: 6.4 BGE specs [Re: Christian74]
Silver70 Offline
I Live Here

Registered: 02/01/03
Posts: 18395
Loc: Rust Belt, SW PA
Originally Posted By Christian74
Btw 5.7 heads have larger combustion chamber (open) as opposed to the 6.4 closed 73cc or so but obviously the 6.4 heads are superior for cfm etc


Earlier heads yes 85cc, but eagle are 65cc.

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#2531459 - 08/04/18 10:43 AM Re: 6.4 BGE specs [Re: Christian74]
ric3xrt Offline
pro stock

Registered: 01/13/06
Posts: 1239
Loc: Trumbauersville PA
Originally Posted By Christian74
I didn’t mean or say the pistons rods etc I’m referring strictly to the block and heads of BGE and they are exact hellcat material,extra cooling passages in the block 100%
The heads are exact with 6.4 bolt pattern that’s a fact t 356 alloy and mold difference is in bolt pattern!! As far as the entire shortblock I don’t know if it’s forged or not I’ve heard both yes and no but idk .I have the block with all forged internals so I’d assume it isn’t forged stock or it’s a secret ,really there is a LOT of info vendors do NOT want out .Imho it’s a great bare block meaning hellcat grade and same for the heads


BGE Heads are Not the same as Hellcat heads,
yes they both are made of 356 alum,
yes they have the same Port shapes.
Yes they share the same Head bolt pattern(As Do all production G3 Hemi's
The difference is in the Intake bolt pattern, the Hellcat/Demon has an extra top row of intake bolts for the supercharger, the BGE head DOES NOT have enough material there to drill and tap for the extra row of head bolts....Been there Done it and it's not does not work.
In pinch you could make the BGE heads work, but it will not last long, we got 2 maybe 4 hours out of one on some dyno test, the head split the casting where we drilled for the extra bolts. I don't recall but I know I've written it in a post some where on here.

BGE and Hellcat have both have a forged crankshaft,(different stroke) both have Forged powder metal rods.
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Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View




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#2531462 - 08/04/18 10:50 AM Re: 6.4 BGE specs [Re: ric3xrt]
MattW Offline
master

Registered: 06/02/05
Posts: 2655
Loc: Ontario Canada
Sounds like they could if saved money with one casting as appose to two.
and then offer them to us at a cheaper rate! LOL

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#2531468 - 08/04/18 11:02 AM Re: 6.4 BGE specs [Re: WO23Coronet]
ric3xrt Offline
pro stock

Registered: 01/13/06
Posts: 1239
Loc: Trumbauersville PA
I think they will, from a cost saving point of view it would make sense
What a lot of people loss in the mix is the BGE was out before the Hellcat, and the BGE was meant to be Stiffer version of the Apache

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#2531473 - 08/04/18 11:09 AM Re: 6.4 BGE specs [Re: WO23Coronet]
ric3xrt Offline
pro stock

Registered: 01/13/06
Posts: 1239
Loc: Trumbauersville PA
I don't have any BGE heads here to take a photo of, But I'll try and get on posted by Tuesday
Here is a Hellcat head, notice the the Uper Intake bolt holes and how the lower holes are not drilled


Attachments
Hellcat head.jpg


_________________________
Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View




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