8.90 capable Gen 3 Hemi from scratch??
#1663432
08/25/14 01:03 PM
08/25/14 01:03 PM
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Joined: Mar 2010
Posts: 625 Indianapolis In. usa
Quickrunner
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What would you screw together to be able to hit an 8.90 in a not so light 71 demon? Car will have a dana60, very nice chassis 8.50 cert & suspension probably Bobs frontend and Caltrack or assasin long segment bars out back with mono leaf and possibly anti roll. Will have a 727 with a brake and very limited street use. I really want to do a Gen 3 and have it all fit under a stock dual scoop hood. My inital thoughts are a cog belt procharger setup with intercooler. have seen this done using a SRT intake and that should fit under the hood. My specific question would be how much power will be required to get a say 3300 pound package to hit 8.9 in good conditions? Good forged bottom end is a no brainer but would a short or longer stroke work best with the forced induction? Whick block would be best? Will a 5.7 block work? Heads will obviously need to be up to the task...recomendations?? Oh and for the kicker would like to run on 93 pump gas. I know this is impossible right?? Lets hear some theroy on this...
05 Ram 1500 Daytona package 71 Demon Gen3 hemi drag radial project
Missin' my 9 second 70 runner!
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: TheOtherDodge]
#1663434
08/25/14 01:49 PM
08/25/14 01:49 PM
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By "not so light" I mean all steel except possibly the hood. Will have full interior, no heater, radio, or wiper stuff in it. Full cage, race wheels and brakes and of course all aftermarket suspension. For arguement sake there are lots of bracket A bodys that go 3200-3400 pounds.
05 Ram 1500 Daytona package 71 Demon Gen3 hemi drag radial project
Missin' my 9 second 70 runner!
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Quickrunner]
#1663435
08/25/14 02:52 PM
08/25/14 02:52 PM
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Joined: Jan 2003
Posts: 11,713 Portage,michigan
B3422W5
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340 Rick has already been 9.61 on motor at 11.3 compression with a 727 in his car. It's not exotic at all, just well thought out. And I suspect it will likely dip into the 40's once he plays with it some. I believe he has only raced it twice. He would be an excellent source to pick his brain a little
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: B3422W5]
#1663436
08/25/14 03:05 PM
08/25/14 03:05 PM
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Joined: Jan 2003
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Al_Alguire
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9.60 or even 9.40 is a LONG way from 8.90.
To make enough power to run 8.90 at 3200lbs you are looking at getting close to the 900HP level. In a great working car maybe 850 will get you close, but few folks really have GREAT working cars. I know the Wheatcrafts run a Gen 3 Hemi in their short dragster. It is not a TON faster than 8.90 but they have been running it for a few years.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Al_Alguire]
#1663437
08/25/14 03:32 PM
08/25/14 03:32 PM
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Joined: Jan 2003
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B3422W5
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I think Barton has been 8.80's or 90's in his class car with a gen 3. Think the OP stated he would use a blower. Think that makes his goal very achievable.
ETA..... Barton has been 8.76 in stocker trim in his Challenger n/a. Not sure what it weighs.
Last edited by B3422W5; 08/25/14 03:39 PM.
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: B3422W5]
#1663438
08/25/14 04:28 PM
08/25/14 04:28 PM
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Joined: Jun 2003
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sixpackgut
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on my car, I figured 1000hp would get me a 8.50. I have 2 small turbos and SRT exhaust manifolds sitting on the shelf for when the day comes. 5.7 will work fine. eagle heads will do the trick.
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: B3422W5]
#1663439
08/25/14 04:41 PM
08/25/14 04:41 PM
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Seeing Rick's car with the Gen 3 in it is actually what inspired me to wanna build this Demon. I figure I got one good build left in me and I know I want to do it right and do it once insted of several incarnations like the last race car. Less $$ in the long run to do it right the first time! My thought is build the most bullet proof combo I can with a Procharger so it wont have to be on the raged edge. Want big steam without having to run the piss out of it. Want a show stopper with 8.90 ability and want to take it to suds once in a while and want to be able to run it on 93 pump gas! I know i dont want much right... LOL
Last edited by Quickrunner; 08/25/14 04:51 PM.
05 Ram 1500 Daytona package 71 Demon Gen3 hemi drag radial project
Missin' my 9 second 70 runner!
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Quickrunner]
#1663440
08/25/14 05:57 PM
08/25/14 05:57 PM
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Joined: Jan 2005
Posts: 3,635 Oakland, MI
dizuster
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If it were me... And it will be eventually....
Stock 5.7l block Stock 6.1l crank Late 5.7, 6.1, or 6.4 heads
Turbo so you can set boost with a flip of the switch.
Low boost 700hp mode for pump gas High boost 1000hp mode for race gas
Be prepared for all of the parts of takes to support a 1000hp motor too!
Trans, fuel system, good shocks, efi, etc...
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: dizuster]
#1663442
08/25/14 07:14 PM
08/25/14 07:14 PM
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Be prepared for all of the parts of takes to support a 1000hp motor too!
Trans, fuel system, good shocks, efi, etc...
I hear ya, not my first rodeo just been out of the saddle a while. Turbo may be more efficient than a blower once set up properly but I think it will be more consistent on a blower, seems easier to launch a blown car than a turbo car. Maybe I am wrong but I want the power right now don't want to have to spool up to launch.
Looking for some info on what motor combo would be more blower friendly? Rod ratio and such. How long of an arm to put in it, and what kind of compression will work with the amount of boost necessary to make the #'s im after. Who makes good crank, rods n pistons for these motors? What kind of flow #'s are needed for the heads? Info like that.
05 Ram 1500 Daytona package 71 Demon Gen3 hemi drag radial project
Missin' my 9 second 70 runner!
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Quickrunner]
#1663443
08/25/14 07:29 PM
08/25/14 07:29 PM
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340RICK
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Dave I have the Manley 4" kit in my motor But Callies has a nice kit that's 4" too. Check out the guys on LXforums.......most of them all do 392/426 kits which is the 4" crank kit I would talk to Arrington about compression and cam suggestions. They have built a ton of boosted 3G's Bottom line it will be purty easy to achieve your HP goals but getting that much HP to the track on radials and cal tracs will be your challenge
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Al_Alguire]
#1663444
08/25/14 07:50 PM
08/25/14 07:50 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
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Quote:
9.60 or even 9.40 is a LONG way from 8.90.
It's a long way away from 8.90 on motor, but not with a power adder. I'll never forget when Jason Bair was running 10 flat in that big old 67 Coronet, he put a nitrous kit on it, blew my doors off. When I looked at my time slip his side said 8.80 at 155.
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: ProSport]
#1663445
08/25/14 08:16 PM
08/25/14 08:16 PM
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B3422W5
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Quote:
Quote:
9.60 or even 9.40 is a LONG way from 8.90.
It's a long way away from 8.90 on motor, but not with a power adder. I'll never forget when Jason Bair was running 10 flat in that big old 67 Coronet, he put a nitrous kit on it, blew my doors off. When I looked at my time slip his side said 8.80 at 155.
Yep....... Your talking maybe having the power added make an additional 200 ponies over what the n/a configuration churns out. Not real hard to make 675 or better as good as the gen 3 heads are. Rick is making more than that easily.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: 340RICK]
#1663446
08/28/14 01:43 PM
08/28/14 01:43 PM
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Joined: Sep 2006
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1badx
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Quote:
I agree with Scott
5.7/392 stroker Lots of good quality stroker kits available I would do a old 2003 to 2009 block to stay away from the VVT cam with the 2010 up 5.7 eagle heads ported
I would do stock exhaust manifolds or the cheap stainless steel shorty headers for a LX car. You will have plenty of room with a Tube K and coilovers..... and a 88mm turbo
This would put the car in the 8's with ease
I agree with Scott and Rick. They are right on the money here with the Gen III builds. The only thing I would do different is not even consider the 5.7 heads. Apache(6.4) heads are cheap and you can bolt a 6.1 intake right up without adapter plates - so go that route. Thitek heads are a premium option as well.
5.7 block, 6.1 or 6.4 heads, 6.1 or aftermarket forged crank, forged rods and pistons, turbo cam, 88mm, supporting drivetrain for 1000+ crank HP and 8's easy.
I'm running the above (with an oversized turbo - 88mm would be so much better) in my 5300# Jeep and it goes high 9's. Knock a couple thousand pounds off and....
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: 1badx]
#1663447
08/28/14 01:57 PM
08/28/14 01:57 PM
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This is exactly the feedback I was looking for! As for a cam, who is the guru on what works in a Procharged application like this? Also what static compression should I shoot for to run this beast on 93 pump gas? Also since this is going in a new ground up build what is the best setup to run for injection/ignition control?
05 Ram 1500 Daytona package 71 Demon Gen3 hemi drag radial project
Missin' my 9 second 70 runner!
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Eric]
#1663449
08/28/14 06:38 PM
08/28/14 06:38 PM
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340RICK
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Quote:
How much $$$ to put 2100# in the mid 8's...
The motor in my car at 3300lbs should get you there easy Eric
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Re: 8.90 capable Gen 3 Hemi from scratch??
[Re: Eric]
#1663451
08/29/14 04:15 PM
08/29/14 04:15 PM
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1badx
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Quote:
How much $$$ to put 2100# in the mid 8's...
Geez... at that weight a crate Gen III engine could probably do that!
Just kidding but not that far off. A crate short block, proper cam and Thitek heads and you are there.
Or just buy Ricks engine
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