FRP Hellfire Cam on 5.7 with high mileage or save up for a 6.4 truck engine swap?

[AzCats]

Hello everyone, I'm on the fence here on deciding between the two options. Any advice or knowledge would be great.

My 2014 Ram 1500 5.7 8spd 3.92 gears has 130K miles everything is running great. I also run a 6.4 intake manifold with 5.7 injectors.

I want to do some 5.7 upgrades or maybe a 6.4 truck engine swap . I'm looking for more importantly reliability, drivability with good torque.

Should I put in a FRP Hellfire 2.0 cam kit, FRP tune, and SW longtubes. Or save up for a 6.4 Truck engine swap. Thoughts? Thanks everyone.

 

[Bigskyroadglide]

Do the truck 6.4, you'll be happy

 

[Mojo88]

Yep, 6.4 all the way. You stand a good chance of lowering torque in your 5.7 with a larger cam selection. You may indeed gain some high rpm horsepower, but you specifically mention "drivability with good torque", so I'd say 6.4

@Wild one knows a couple of guys that did this, swap out the 5.7 for 6.4, maybe he can comment on the swap. I think he said both guys were very happy. I believe they both also used a custom tune, not sure of other parts??

 

[CanuckRam1313]

Hello everyone, I'm on the fence here on deciding between the two options. Any advice or knowledge would be great.

My 2014 Ram 1500 5.7 8spd 3.92 gears has 130K miles everything is running great. I also run a 6.4 intake manifold with 5.7 injectors.

I want to do some 5.7 upgrades or maybe a 6.4 truck engine swap . I'm looking for more importantly reliability, drivability with good torque.

Should I put in a FRP Hellfire 2.0 cam kit, FRP tune, and SW longtubes. Or save up for a 6.4 Truck engine swap. Thoughts? Thanks everyone.

Put the Hellephant in there and be done with it!

 

[Wild one]

Hello everyone, I'm on the fence here on deciding between the two options. Any advice or knowledge would be great.

My 2014 Ram 1500 5.7 8spd 3.92 gears has 130K miles everything is running great. I also run a 6.4 intake manifold with 5.7 injectors.

I want to do some 5.7 upgrades or maybe a 6.4 truck engine swap . I'm looking for more importantly reliability, drivability with good torque.

Should I put in a FRP Hellfire 2.0 cam kit, FRP tune, and SW longtubes. Or save up for a 6.4 Truck engine swap. Thoughts? Thanks everyone.

Can't beat the truck 6.4's off idle torque if you want tire spinning torque I'd look into a thermostatically controlled oil cooler if you're keeping the 3.92 gears,as the 6.4's run pretty hot oil temps due to the piston oil squirters they have,and you're 3.92 gears won't be helping to keep the oil temps down

 

[crackerjack1957]

Put the Hellephant in there and be done with it!

View attachment 582842

Only 35k........LoL

https://www.dcperformance.com/crate-engine

 

[SouthernBornRebel]

IF it's running great, just toss a ProCharger on it and let it eat...

 

[GeauxinUp]

Neither…

MOPAR 68643793AA Hurricrate Cat3 Twin Turbo Crate Engine

MOPAR 68643793AA Hurricrate Cat3 Twin Turbo Crate Engine

highhorseperformance.com

 

[Wild one]

Neither…

MOPAR 68643793AA Hurricrate Cat3 Twin Turbo Crate Engine

MOPAR 68643793AA Hurricrate Cat3 Twin Turbo Crate Engine

highhorseperformance.com

Or this,then you actually have a good engine,that'll actually be a virtual drop in with tuning

Hellcat 6.2L HEMI FORGED Long Block by MMX

Hellcat 6.2L HEMI FORGED Long Block by MMX

www.modernmusclextreme.com

 

[GeauxinUp]

Or this,then you actually have a good engine,that'll actually be a virtual drop in with tuning

Hellcat 6.2L HEMI FORGED Long Block by MMX

Hellcat 6.2L HEMI FORGED Long Block by MMX

www.modernmusclextreme.com

Don’t think I haven’t eyeballed that one a few times!

 

[AzCats]

Or this,then you actually have a good engine,that'll actually be a virtual drop in with tuning

Hellcat 6.2L HEMI FORGED Long Block by MMX

Hellcat 6.2L HEMI FORGED Long Block by MMX

www.modernmusclextreme.com

Drop in? Is NA possible? or does it requires the SC.

 

[Wild one]

Drop in? Is NA possible? or does it requires the SC.

You'd be better off with a drop in 6.4 if you're leaving it naturally aspirated.

 

[GeauxinUp]

Drop in? Is NA possible? or does it requires the SC.

Forced induction is definitely not required, but like @Wild one said, better off with 6.4 for NA. As this engine is overkill, plus compression is geared towards forced induction.

 

[crackerjack1957]

Forced induction is definitely not required, but like @Wild one said, better off with 6.4 for NA. As this engine is overkill, plus compression is geared towards forced induction.

Ring gap & cam also.........