New engine combo, what will it run?

[71Demon540]

I'm sure it'll pick-up from the last combo despite the minor changes because it's fresh. What were the incrementals to the 1/8? 60/330 It's always been a great running package. You just don't see too many bracket cars this quick, especially mopars.

Thanks Sean!

60 is usually 1.19-1.21 with a best of 1.18
330 is usually 3.48-3.53 with a best of 3.47

 

[-Boosted-]

Hahahaha

3.55 at 271 mph

RJ,

You gotta remember that Korie was the one that watched me spin tire and run a 10.50 and said "****, get that ***** to hook up and it will run 8's!"

 

[71Demon540]

RJ,

You gotta remember that Korie was the one that watched me spin tire and run a 10.50 and said "****, get that ***** to hook up and it will run 8's!"

Lmao I believe it! Gotta love the fun at the race track

 

[MOPARMAGA]

RJ,

You gotta remember that Korie was the one that watched me spin tire and run a 10.50 and said "****, get that ***** to hook up and it will run 8's!"

Hahaha, that thing never hooked.

 

[TT5.9mag]

Hahaha, that thing never hooked.

It did in Vegas.

 

[-Boosted-]

It did in Vegas.

haha, so freakin slow tho!

 

[TT5.9mag]

haha, so freakin slow tho!

Pretty soft for 123mph.

 

[MOPARMAGA]

It did in Vegas.

Should've ran 8s then lol

 

[9secRR]

That’s what I’m thinking as well. Hoping to run 30s in decent air and 40s primarily.

very nice car BTW. i would love to be in the 5.50's, won't happen but i can dream!

 

[71Demon540]

very nice car BTW. i would love to be in the 5.50's, won't happen but i can dream!

Thank you. I honestly never thought I would be running this fast. It was never really a goal, it just kind of happened. I lucked out with the initial purchase of the car and how fast it was when I bought it. And we have only made it faster since.

 

[-Boosted-]

Thank you. I honestly never thought I would be running this fast. It was never really a goal, it just kind of happened. I lucked out with the initial purchase of the car and how fast it was when I bought it. And we have only made it faster since.

I freakin love your car! Hell, I freakin love your dad's car too! lol

 

[MOPARMAGA]

I freakin love your car! Hell, I freakin love your dad's car too! lol

2 badasses

 

[MobileCustoms]

Yep, they don't belong !

What's wrong with having a pop-up toaster???

 

[MobileCustoms]

PS.... beautiful build!

 

[MOPARMAGA]

What's wrong with having a pop-up toaster???


View attachment 1716396473

Lol, that's funny *** **** !
Damn, that is the first time I've been flipped off on fabo

 

[71Demon540]

You guys are hilarious hahaha this is why I started the thread.

Thanks Bill and Korie. Much appreciated. I been working on my dad’s car nonstop for the past 2 months. And it’s finally very close to race ready.

 

[MobileCustoms]

Lol, that's funny *** **** !
Damn, that is the first time I've been flipped off on fabo

All in fun!

 

[MOPARMAGA]

All in fun!

That is awesome I must say.

 

[PROSTOCKTOM]

I'm sure it'll pick-up from the last combo despite the minor changes because it's fresh. What were the incrementals to the 1/8? 60/330 It's always been a great running package. You just don't see too many bracket cars this quick, especially mopars.

Here's an all homebuilt car that can do the deal. Of course this car only weighs 2100 pounds.

Tom

 

[71Demon540]

Here's an all homebuilt car that can do the deal. Of course this car only weighs 2100 pounds.

Tom

Oh ya. Thats a sweet setup. I love the free reving lol

 

[Curious Duster]

Here's an all homebuilt car that can do the deal. Of course this car only weighs 2100 pounds.

Tom

That's Speeds New Hope dragway, I have raced there. It opened in 1969.

 

[ValiantS]

Here's an all homebuilt car that can do the deal. Of course this car only weighs 2100 pounds.

Tom

That's a neat little car, share the details you know. What year was that?

 

[ValiantS]

Something John (Pittsburghracer) and others really enjoyed on this site was taking a guess at what a new combo would run. I remember when @-Boosted- was making changes to Fred, there were a lot of posts on what the car would run with the changes he would make. So here it goes,

1971 Demon
2825lbs race ready (With driver)
4 link rear suspension w/anti roll bar
Coil over front suspension with upper and lower a-arms
Viking double adjustable shocks front and rear
Dana 60 w/ 4.56 gears
32x13.5W Hoosier slicks
727 w/2.28 first gear and trans brake
8" turbo action converter 6500 stall

New engine combo is 540" low deck Indy block
4.500 bore
4.250 stroke
Indy 440-1 heads
Indy single plane intake
1" HVH 4 hole tapered spacer
APD 1175 dominator
14.8:1 compression
.776/.752 111 LSA 285/296@.050
Kromer kraft headers 2"-2 1/8"-2 1/4" double stepped primary tubed with 4" collector

Old engine combo was a 528" low deck Indy block
4.500 bore
4.150 stroke
Same heads and intake
14.5:1 compression
AED 1150 dominator
Same camshaft
Same headers

Old engine ran a best of 5.43 @ 125mph and typically ran low to mid 5.50s in normal hot summer air. In any decent air it would go into the high 40s. When it spit out the 5.43, we were in very good conditions at a good track. It did it back to back so it wasn't a fluke.

I probably won't get to the track til mid-end of May to give results. But that is right around the corner.

So lets hear the predictions for the new combo and what guys think it will run...



Video of the initial fire up of the engine

Is that Tim in the video with you?

 

[71Demon540]

Is that Tim in the video with you?

That is Keith, Tim’s older brother.

 

[Gomer Pyle]

Unless the original block had ring seal issues it will probably run about the same, maybe a hair quicker if the additional stroke helps the 60'.