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...

Depends on what you consider "not so light". Need to have the weight to determine how much power you would need to run 8.9's.

Also, from what I have been told, there are many that are making 1000+ hp on pump without an intercooler. Save the weight and money and skip this.

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.

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

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 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.

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.

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

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...

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

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.

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

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.

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?

How much $$$ to put 2100# in the mid 8's...