383 With Stage V Engineering Hemi Coversion Heads.

[BigRichRam02]

I thinking of building a 383 with hemi conversion heads, turbocharging it and ruining EFI. What are y'all's thoughts?

 

[dieseldazzle]

No replacemention for displacement

 

[HEMI-ITIS]

That's cool,,,,,,,but if your gunna build it,whey not start with 500+ inches?

 

[chooch]

the conversion is a thing of the past you will have more money into one of a kind only parts than you will with just a normal hemi, not to mention the headache of getting the headers to work or fit. been there done that & will never do it again

 

[Hemirunner]

No replacemention for displacement

You don't need (and usually don't want) the cubes for the turbo applications especially when power factors of 4+ to 1 are easily accomplished. That's 1500+ in this scenario. The stage V conversion is actually less grinding into the valley wall on the low deck block. I'd use a 400 block and the short stroke steel crank and get-R-dun. I'd think it would be wicked.

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the conversion is a thing of the past you will have more money into one of a kind only parts than you will with just a normal hemi, not to mention the headache of getting the headers to work or fit. been there done that & will never do it again

With turbos, you just build your own. I did mine from mild steel. Building anything like this is not for the average shake the box and bolt it on guy.

 

[Photon440]

Getting the airflow for 1500 hp is no problem. Obtaining pistons, crankshaft and rods for that level of power are also do-able. Having the block stay together instead of opening up like a banana is a different story.

 

[moper]

... and if you want a block to hold up - just order a B hemi block and run Hemi heads.

 

[Hemirunner]

Getting the airflow for 1500 hp is no problem. Obtaining pistons, crankshaft and rods for that level of power are also do-able. Having the block stay together instead of opening up like a banana is a different story.

Stock stroke 383 or 400 block in a turbo application at that power level will survive with no issues. 1500hp in a turbo application is not like NA, nitrous or blown scenarios. That back pressure in the pipe does wonders.

 

[dieseldazzle]

You don't need (and usually don't want) the cubes for the turbo applications especially when power factors of 4+ to 1 are easily accomplished. That's 1500+ in this scenario. The stage V conversion is actually less grinding into the valley wall on the low deck block. I'd use a 400 block and the short stroke steel crank and get-R-dun. I'd think it would be wicked.

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With turbos, you just build your own. I did mine from mild steel. Building anything like this is not for the average shake the box and bolt it on guy.

HemI runner I respect you a ton but that's just ridiculous. I understand turbos well my 331 turbo mustang made 960 at the tire. I built it in my garage......I would have loved to start with a big bore 363 so don't give me that crap. If you are gonna build it may as well add some cubes.

 

[Hemirunner]

You're talking apples an oranges here. The 383 is already big bore compared to most small blocks and with a 400 block it's even larger. 400" with a pair of 76's will make 1500hp easy. Adding cubes(ie by adding stroke) decreases the journal overlap, weakening the crank, adds stroke further beating up the block and the added cubes just make the backpressure go even higher, the increased torque is also produced at an even lower rpm making it even more difficult to hook it up. Now if you're trying for even more power, sure, go to the aftermarket block, big money crank, nice rods and put some cubes in it. You'll need even more turbo to feed it with a larger exhaust housing to get it through. My combo is going to be 540 cubes with a 4.250 stroke and a pair of 76's mainly for street duty. That also allows me to upgrade to an appropriately sized set of twins in the 88 or 91 range. My last boosted ford combo was a 427 that made 1635hp at the crank. We're changing cams now and should be near 1800 with the same F2. The issue with the big prochargers is the heat and noise so not real street car friendly.

 

[HT413]

Listen fellas, forum rules dictate any talk over 500 hp require engine **** AND video. Don't make me report you guys to Cranky!

 

[rrTor-Red]

Listen fellas, forum rules dictate any talk over 500 hp require engine **** AND video. Don't make me report you guys to Cranky!

:happy9:

 

[Garys1969RR]

I thinking of building a 383 with hemi conversion heads, turbocharging it and ruining EFI. What are y'all's thoughts?

Sounds like a very expensive and frustrating headache to me. If money is not a problem, Why not just send IQ 52 a bunch of it, tell him what you want, and he will deliver! I think a good way to go would be a well built stroker 400, with high flowing ported heads, solid roller cam, and if that aint enough, then turbo it.

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You could even go with a six pack set up for some extra torque and horse power. Plus they look real cool.

 

[BigRichRam02]

Im thinking stock displacement with hemi heads will do some nice numbers. Im going for a modern twist on old iron. EFI, electric water and fuel pumps, electric cooling fans, aluminum everything, turbocharger or chargers looking for a easy going 700hp.

 

[SlinktRR]

Definitely would be a unique engine. But if I had that kind of money to spend I would just go Gen II hemi with everything else you listed. 6 pack EFI on gen II hemi with turbos? Might go better than a B block with 90's era workaround hemi heads on them.

 

[Bigal75]

Why not start with a Gen 3 hemi?

 

[lewtot184]

Getting the airflow for 1500 hp is no problem. Obtaining pistons, crankshaft and rods for that level of power are also do-able. Having the block stay together instead of opening up like a banana is a different story.

"having the block stay together instead of opening like a banana is a different story", no truer words spoken. the stock block won't take the power.

 

[moper]

I would counter that it will take it - for a time. Then it won't. Problem is nobody's going to know when that point is reached - until you reach it.

 

[BigRichRam02]

Im not planning crazy power guys just something that will makea modern car with some tweaks sweat and be a daily driver.

 

[Garys1969RR]

Good luck with your build! Will definitely be something different. When you make a final decision, let us know and get an engine build up thread going.