Blue Print Hemi

[Big Dee]

I have purchased the complete 426 hemi set-up from Blueprint (engine management, fuel injection and accessories). It's going into a 71 Demon with a 4L80E behind it. The Demon will have the new Hammerfab A-body Street Connection suspension. The car is at my buddies shop, he's the builder for this! Im going to start a thread on the build when he starts the suspension instal.

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That’s bad ***.

 

[Robzilla]

Thanks Dee... my buddy lives 100 miles from me. I'm gonna swing by his place next weekend to check on his progress/motivate him!

 

[racerjoe]

A 340 with a 4" crank is a 416 and can probably keep up with a few engines and probably be cheaper than a new Hemi swap.

This is false. I had a 408 with good aluminum heads, solid roller cam, etc and swapped in the less desirable pre-eagle 5.7 with only a cam and some home porting on the heads. The 5.7 went faster in the 1/4 than the 408. Same car, same weight. I'll repeat, that was a stock early 5.7 with a cam that makes more power than a built 408. If you put the same money it takes to build a stroker small block, you could have an easy 650Hp Gen 3 hemi than runs on pump gas.


I'll go ahead and address the forthcoming comments that say they can build a stroker small block to make 650HP. I'm sure you can, and I doubt you will run pump gas. And The build cost will go up substantially. So that build cost, and your G3 hemi will now make 800HP and still run on pump.

 

[cpearce]

This is false. I had a 408 with good aluminum heads, solid roller cam, etc and swapped in the less desirable pre-eagle 5.7 with only a cam and some home porting on the heads. The 5.7 went faster in the 1/4 than the 408. Same car, same weight. I'll repeat, that was a stock early 5.7 with a cam that makes more power than a built 408. If you put the same money it takes to build a stroker small block, you could have an easy 650Hp Gen 3 hemi than runs on pump gas.


I'll go ahead and address the forthcoming comments that say they can build a stroker small block to make 650HP. I'm sure you can, and I doubt you will run pump gas. And The build cost will go up substantially. So that build cost, and your G3 hemi will now make 800HP and still run on pump.

I have a 408 W2 motor that now is in the 580HP range. The amount of money in the heads for purchase, porting and valve train is likely in the $4500 range. These still don't flow what a set of over the counter Apache heads do. Then there is the issue of block strength vs cost and availability. I know we still love our big blocks and LA engines, they dont hold a candle to the Gen 3 Hemi stuff on a cost per output and reliability basis.

 

[racerjoe]

I have a 408 W2 motor that now is in the 580HP range. The amount of money in the heads for purchase, porting and valve train is likely in the $4500 range. These still don't flow what a set of over the counter Apache heads do. Then there is the issue of block strength vs cost and availability. I know we still love our big blocks and LA engines, they dont hold a candle to the Gen 3 Hemi stuff on a cost per output and reliability basis.

I bet you could build a 6.4 with some drop ins, a cam, and head porting for $4500 and make 650HP easily. I drank the G3 hemi cool aide and I'm not going back. I still like the old school LAs but I won't ever build one again.

 

[69Chrgr]

I bet you could build a 6.4 with some drop ins, a cam, and head porting for $4500 and make 650HP easily. I drank the G3 hemi cool aide and I'm not going back. I still like the old school LAs but I won't ever build one again.

Here is my 68 Barracuda Restomod project with a 5.7 stroker (now 6.4/392) progress. Also have a build series on my G3 Hemi.

 

[69Chrgr]

Here is my 68 Barracuda Restomod project with a 5.7 stroker (now 6.4/392) progress. Also have a build series on my G3 Hemi.

Here is the finale with dyno results of my G3 Hemi.

 

[jbc426]

I bet you could build a 6.4 with some drop ins, a cam, and head porting for $4500 and make 650HP easily. I drank the G3 hemi cool aide and I'm not going back. I still like the old school LAs but I won't ever build one again.

I was put off by what appeared to be required to fit the G3 into one of our A-Bodies. I didn't research too deeply, but at first glance it looks pretty extensive and very expensive to update the front suspension to allow it to fit. I don't count exhaust, fuel system upgrades, chassis stiffening or EFI systems, as that is needed on almost every common engine type used.

As I said, I didn't look too deeply into the cost of the front suspension swap to a coil over K-frame conversion, but that adds about $2500+ to the swap, No? The 4L60 I had built for it bolts right up to a G3, so that cost is the same for either mill.

I already had bigger torsion bars, tubular upper control arms, adjustable strut rods, a sway bar, so the cost of those items would be offset to some degree with a full K-member upgrade with coil overs etc. I was already running all that stuff anyway, so it was easy and pretty much a bolt-in process to install a stroked 5.9 Magnum that puts out over 500ftlbs of torque beginning at 3400rpm and 820hp below 6000rpm with only 11psi boost. The Novi I'm using is rated up to 26psi, but I'm not going there.

 

[cpearce]

I was put off by what appeared to be required to fit the G3 into one of our A-Bodies. I didn't research to deeply, but at first glance it looks pretty extensive and very expensive to update the front suspension to allow it to fit. I don't count exhaust, fuel system upgrades, chassis stiffening or EFI systems, as that is needed on almost every common engines type used.

As I said, I didn't look too deeply into the cost of the front suspension swap to a coil over K-frame conversion, but that adds about $2500+ to the swap, No? The 4L60 I had built for it bolts right up to a G3, so that cost is the same for either mill.

I used a pretty much bolt-in stroked 5.9 Magnum that puts out over 500ftlbs of torque beginning at 3400rpm and 820hp below 6000rpm with only 11psi boost. The Novi I'm using is rated up to 26psi, but I'm not going there.

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Although Ive not done the swap yet, I don't believe, in fact I know, you do not need to change the front suspension to install a Gen 3 Hemi into an A body. This is NOT to be factored into the cost of the conversion. Mounts, headers, fuel system, and cooling mods.

 

[jbc426]

Although Ive not done the swap yet, I don't believe, in fact I know, you do not need to change the front suspension to install a Gen 3 Hemi into an A body. This is NOT to be factored into the cost of the conversion. Mounts, headers, fuel system, and cooling mods.

I thought there were problems with K-member and steering interference issues. Please elaborate.

 

[cpearce]

I thought there were problems with K-member and steering interference issues. Please elaborate.

From what I understand you use a swap specific oil pan, in my case I have a Milodon. Using TTI mounts puts the engine in the correct location fore and aft, Holley has some degree of relocation. Use TTI headers correct for your chassis. Manual transmission users must use a hydraulic throwout bearing as headers are not compatible with mechanical z bar linkage. Oil filter must be relocated. Ive read where users had to modify or use steering components from later year A bodies for more clearance. It seems the later spool type mounts are preferred over the earlier biscuit style, however both can be used.

This book is a good resource.

 

[Professor Fate]

From what I understand you use a swap specific oil pan, in my case I have a Milodon. Using TTI mounts puts the engine in the correct location fore and aft, Holley has some degree of relocation. Use TTI headers correct for your chassis. Manual transmission users must use a hydraulic throwout bearing as headers are not compatible with mechanical z bar linkage. Oil filter must be relocated. Ive read where users had to modify or use steering components from later year A bodies for more clearance. It seems the later spool type mounts are preferred over the earlier biscuit style, however both can be used.

This book is a good resource.
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A couple of additional points to what you've already listed:
Truck front cover can provide better accessory clearance than car front covers, but may interfere with some intake manifolds.
Right angle oil filter mount (used on 4x4 trucks) provides better K frame clearance, although a bit of clearancing may still be necessary.
It's been noted that a slant K frame gives a bit more clearance in several areas, but I have not personally verified this.

 

[DionR]

I was put off by what appeared to be required to fit the G3 into one of our A-Bodies. I didn't research to deeply, but at first glance it looks pretty extensive and very expensive to update the front suspension to allow it to fit.

Almost everything has compromises, just depends on what compromises you want to accept. Even spending a ton of money comes with compromises. Pick your poison.

A significant outlay of cash to buy a COC would kill the swap for me. Thankfully it isn’t the only way, so I can still make it happen.

Now, time has marched on and there are options that might not have been available when you were looking. When TTI and Schumacher were the only options, PS wasn’t something you could have and a remote oil filter was (almost) required. But now you can run a Borgeson box and TTI headers, and people have come up with options to make the oil filter better. If you wanted AC, the truck TC cover was the best option, but now you can buy a whole FEAD kit from Holley (for a bunch of money) that makes everything fit. Or do a custom mount for a different AC compressor like some have done now.

I went the route of Holley mounts for the spool mount V8 k-frame that allows me to bolt in a G3 with just some frame rail mods for the alternator but allow me to keep the low mount car AC compressor, use a oil filter adapter that bolts on and keep the SRV module on my 6.4 intake. But it means the motor is in a different location and less optimal. It’s the compromise I was willing to live with.

It’s complex, kind of like most things.

As I said, I didn't look too deeply into the cost of the front suspension swap to a coil over K-frame conversion, but that adds about $2500+ to the swap, No?

Try more like $5k. Without the aftermarket brakes you have to buy, and sometimes without a sway bar (if you care about that).

To be clear, I’m not saying a COC doesn’t make it easier, they free up a ton of room. But they have their compromises, and not just the cost (IMO).

 

[racerjoe]

I was put off by what appeared to be required to fit the G3 into one of our A-Bodies. I didn't research too deeply, but at first glance it looks pretty extensive and very expensive to update the front suspension to allow it to fit. I don't count exhaust, fuel system upgrades, chassis stiffening or EFI systems, as that is needed on almost every common engine type used.

As I said, I didn't look too deeply into the cost of the front suspension swap to a coil over K-frame conversion, but that adds about $2500+ to the swap, No? The 4L60 I had built for it bolts right up to a G3, so that cost is the same for either mill.

I already had bigger torsion bars, tubular upper control arms, adjustable strut rods, a sway bar, so the cost of those items would be offset to some degree with a full K-member upgrade with coil overs etc. I was already running all that stuff anyway, so it was easy and pretty much a bolt-in process to install a stroked 5.9 Magnum that puts out over 500ftlbs of torque beginning at 3400rpm and 820hp below 6000rpm with only 11psi boost. The Novi I'm using is rated up to 26psi, but I'm not going there.

View attachment 1716496136

Lots of people out there using the stock K with the Gen 3 Hemi. You don't have to use an aftermarket K, but it does make it easier.

 

[racerjoe]

Here is my 68 Barracuda Restomod project with a 5.7 stroker (now 6.4/392) progress. Also have a build series on my G3 Hemi.

I've watched your videos. Good stuff. FYI. I'm glad you are getting rid of the SS springs!

 

[Ozyduster]

I thought there were problems with K-member and steering interference issues. Please elaborate.

Nope, Used Holley mounts and sump etc in mine and fits like a glove. Steering all looks to be fine, people have had issues when mixing kits like tti mounts with a holley sump etc then people start to have issues with suspension components hitting

 

[Johnny Mac]

We have sold a ton of BluePrint Hemi's.

Just sharing some links of clips of them for the savvy internet people to follow these builds /builders.

Tons of swap parts out there...this is not a "hard" swap by any means. At this point in time.

Source: YouTube 426 Gen 3 HEMI in a '70 Charger - BluePrint Engine ROARS! #musclecar #oldschool

104 reactions · 10 comments | And we're off!! This BluePrint Engines Gen III Hemi-Compatible 426 is going to be a serious upgrade for my 1969 Dodge Charger. It's advertised to make 610 horsepower and 525 lb-ft of torque, but the dump sheet says it ma

And we're off!! This BluePrint Engines Gen III Hemi-Compatible 426 is going to be a serious upgrade for my 1969 Dodge Charger. It's advertised to make 610 horsepower and 525 lb-ft of torque, but the...

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