Any Eagle Hemi Carb Guys ?

[74 DART']

Any Eagle Gen 3 Hemi guys running a carb on here ? Trying to decide if I want to change plans and switch to a Holley single plane intake and run a carb. Looking at a Blackbird Performance Mach 1 camshaft and cam phaser gear. This is going to be street / strip style hot rod anyway. 727 reverse manual valve body - manual brakes and steering - no a.c. Trying to keep weight down within reason, will still have a full interior.

 

[408 swinger]

Using the Blackbird package would be the way to go. For a short time, I did a 5.7 Eagle with 6.4 cam and carb. Although it ran ok, it wasn't nearly as fast as the early 5.7 with 6.1 cam and Eagle heads.

 

[wish4hemi]

Agree. All of Blackbird’s Race Spec engines come standard with carburetors. You’d gain a little torque with the factory EFI manifold, but gain a little simplicity with a carburetor.

Race Spec Engines

 

[HR5058]

Me. I ran with dual quad edelbrocks, then gas 1050 single carb on top of Ritter intake and now switching to 950 E85 carb.

 

[racerjoe]

Using the Blackbird package would be the way to go. For a short time, I did a 5.7 Eagle with 6.4 cam and carb. Although it ran ok, it wasn't nearly as fast as the early 5.7 with 6.1 cam and Eagle heads.

Not to hack this thread, but what did your early 5.7, 6.1 cam, and eagle head combo run? What was the car weight and setup? Was that a carb setup as well?

 

[DionR]

Using the Blackbird package would be the way to go. For a short time, I did a 5.7 Eagle with 6.4 cam and carb. Although it ran ok, it wasn't nearly as fast as the early 5.7 with 6.1 cam and Eagle heads.

Curious if you had VVT working with the 6.4 cam. Not doubting your results, just adding to the overall picture.

 

[408 swinger]

Curious if you had VVT working with the 6.4 cam. Not doubting your results, just adding to the overall picture.

Negative. Just ran the cam straight up. It definitely needs the fuel injection with the SRV. I don't think there would have been much difference had I actually locked the phaser.

 

[408 swinger]

Not to hack this thread, but what did your early 5.7, 6.1 cam, and eagle head combo run? What was the car weight and setup? Was that a carb setup as well?

The best it ran, before a valve guide wrecked our fun, was 12 flat. Didn't get the chance to do much with it, definitely potential for more. 73 Scamp, 3140 full dress. 904 with a swap meet 3000 convertor. 3.91 gear with Super Stocks. Mickey ET street 235/60. Yes, carb. 750 DP on a CASCAR/Prefix intake. Oh, through Grand Cherokee exhaust manifolds.

 

[DionR]

Negative. Just ran the cam straight up. It definitely needs the fuel injection with the SRV. I don't think there would have been much difference had I actually locked the phaser.

Gotcha. I've read that the first 6.4 swaps into 5.7's were a bust because they didn't use the VVT, as in it was slower than the stock cam. Now, I'm not sure if it was a stock 5.7 cam with VVT versus a 6.4 cam locked, but that's my assumption. But it's all still just the internet so...

Either way, I think the 6.4 cam needs the VVT to be active or it is a waste, but that's just my guess.

 

[408 swinger]

Gotcha. I've read that the first 6.4 swaps into 5.7's were a bust because they didn't use the VVT, as in it was slower than the stock cam. Now, I'm not sure if it was a stock 5.7 cam with VVT versus a 6.4 cam locked, but that's my assumption. But it's all still just the internet so...

Either way, I think the 6.4 cam needs the VVT to be active or it is a waste, but that's just my guess.

I agree 100%. Those cams are designed to work with the VVT and the SRV. I've done that swap in the fuelly. Way different results. Then the 5.7 turns into an animal.

 

[74 DART']

Gotcha. I've read that the first 6.4 swaps into 5.7's were a bust because they didn't use the VVT, as in it was slower than the stock cam. Now, I'm not sure if it was a stock 5.7 cam with VVT versus a 6.4 cam locked, but that's my assumption. But it's all still just the internet so...

Either way, I think the 6.4 cam needs the VVT to be active or it is a waste, but that's just my guess.

From what I have read i think you’re right. I have a 6.4 cam in mine right now. Was originally planning on keeping the VVT and running a factory style pcm and harness. Now I’m going carb and thinking about the timing set that Blackbird sells, the crank gear has different timing marks ( keyway) to advance or retard timing. Wondering if it would help any with the 6.4 cam with the VVT being gone now. I know on the older lower compression big or small blocks you could advance the timing to gain some bottom end but my Hemi is 10.5 to 1 compression. I don’t know just something I was thinking about the other day.

 

[DionR]

From what I have read i think you’re right. I have a 6.4 cam in mine right now. Was originally planning on keeping the VVT and running a factory style pcm and harness. Now I’m going carb and thinking about the timing set that Blackbird sells, the crank gear has different timing marks ( keyway) to advance or retard timing. Wondering if it would help any with the 6.4 cam with the VVT being gone now. I know on the older lower compression big or small blocks you could advance the timing to gain some bottom end but my Hemi is 10.5 to 1 compression. I don’t know just something I was thinking about the other day.

I wonder if Blackbird would have any input on that. They seem to be going all out with the G3 stuff, maybe they have done something with a 6.4 cam before.

 

[cpearce]

Following.

Planning a 426 gen 3 stroker NA with dual quads.

 

[408 swinger]

From what I have read i think you’re right. I have a 6.4 cam in mine right now. Was originally planning on keeping the VVT and running a factory style pcm and harness. Now I’m going carb and thinking about the timing set that Blackbird sells, the crank gear has different timing marks ( keyway) to advance or retard timing. Wondering if it would help any with the 6.4 cam with the VVT being gone now. I know on the older lower compression big or small blocks you could advance the timing to gain some bottom end but my Hemi is 10.5 to 1 compression. I don’t know just something I was thinking about the other day.

If running the VVT block, I would definitely get his timing set. As for cam, I'm thinking better results will be had beyond a stock 6.4.

 

[74 DART']

Following.

Planning a 426 gen 3 stroker NA with dual quads.

That will be awesome! My 5.7 isn’t even running yet and I’m already thinking and keeping an eye out for a 6.4 to build !

 

[74 DART']

If running the VVT block, I would definitely get his timing set. As for cam, I'm thinking better results will be had beyond a stock 6.4.

Yes VVT block. Absolutely on the timing set. I want to run the Mach1 cam also but kind of curious about the 6.4 cam. Maybe try it first and then see how much difference the blackbird cam makes. Not sure yet. Now would be be the time to change to cam since engine is out of the car.

 

[cpearce]

That will be awesome! My 5.7 isn’t even running yet and I’m already thinking and keeping an eye out for a 6.4 to build !

I have collected a Molnar 4.080 crank, rods, Milodon pan and pickup, 6.4 heads, 6.1 and 6.4 blocks, Edelbrock dual quad intake and an Indy Modman.

 

[racerjoe]

The best it ran, before a valve guide wrecked our fun, was 12 flat. Didn't get the chance to do much with it, definitely potential for more. 73 Scamp, 3140 full dress. 904 with a swap meet 3000 convertor. 3.91 gear with Super Stocks. Mickey ET street 235/60. Yes, carb. 750 DP on a CASCAR/Prefix intake. Oh, through Grand Cherokee exhaust manifolds.

Do you recall your MPH? Is that weight with driver?

 

[408 swinger]

Do you recall your MPH? Is that weight with driver?

Add 250 to the weight. I do not recall the mph. I can dig up the timeslips.