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Discussion Starter · #1 · (Edited)
I am building a 383 for my new Chevelle. I have included some of the specs to get an idea of what some people think.
71 Chevy 350 4 bolt block
Scat forged crank
Eagle forged rods
SRP 11.8:1 pistons
Comp solid roller custom grind cam
gross lift .648/.648 with a 1.6 rocker that is .691/.691
Duration @ .050 265/273
Lobe seperation is 106.0
RHS heads 220 runner 2.05 1.62 valves
Pro Magnum 1.6 roller rockers
Super victor intake
and a quick fuel to top it all off. Not sure what size yet, thinking 800ish
Of course everything is balanced and blueprinted very nicely!!!
 

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I would go with Dart heads or Brodix
I would go with the 850 quick fuel as thats a 1.45" venturii if memory serves correct with a 1.75" butterfly. Should run pretty good for you
 

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Discussion Starter · #3 ·
Unfortunately your not the first person to suggest the darts but even more unfortunately i have already purchased the rhs heads and have a great deal of time and money into them. They are flowing 297 on the bench and 204 exhaust side that is an actual bench number not advertising hype. Hopefully they will stand up to the challenge?!
 

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with the nearly 12:1 compression, big solid roller and 220 heads on a 383, I take it this is mainly a track car.
 

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Discussion Starter · #5 ·
No just a real pissy street car for making a little dough. We have built a combo similar to this for my buddies 69 camaro and the results were more than impressive to say the least.
 

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Unfortunately your not the first person to suggest the darts but even more unfortunately i have already purchased the rhs heads and have a great deal of time and money into them. They are flowing 297 on the bench and 204 exhaust side that is an actual bench number not advertising hype. Hopefully they will stand up to the challenge?!
They will be fine, I just prefer the Dart's

I dont care if you use Dart, Brodix, AFR, World or BMF, they all will work great, just some will work better than GM

In my opinion Dart and Brodix are the best, alot of people have excellent luck with AFR, I used AFR's one time years ago upon the customers request
 

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The package looks like it would be good for 6,500-6,800rpm shifts and about 7,200-7,400rpm past the lights.

The cam is a 106° lobe center, are you gonna install it at 106° ICL ? I would but just asking where you plan on putting it
 

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Discussion Starter · #8 ·
I am hoping for mid 10's!! If i can't dial it into that there is this little invention called nitrous that will help me hit or exceed my goal. The intake is being drilled and tapped for a fogger but I am going to plug the holes for right now.
 

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I have been told to install it at 100
Try Both, This Lunati cam below runs quicker in a 327 installed at 106° ICL

327 .030 over 13.1:1
Dart heads {old Dart sportsman with work}
283/291 @.050 .680/.632 106° lobe center

I would try it both ways and im 99% sure you will find it will ET quicker installed at 106°
 

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Have you bought the cam yet? If you can get more compression like 12.5 by tightening up the quench or milling the heads there is more power available but you will need some converter and rear gears

I like that Lunati and the following Crane Custom and Comp Custom
Comp - 307/317 @.020 278/284 @.050 .684/.660 106°
Crane- 307/313 @.020 278/284 @.050 .678/.678 106°

Both cams work great, so does the Lunati. In your engine these larger cams would be good for about a 7,000-7,200rpm shift and would give you a considerable amount more HP
 

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Discussion Starter · #13 ·
Yes I have the cam stuffed away in the spare bedroom. I am going with 11.8 because I want to get away with pump gas for cruising. I was think 4500 to 4800 stall and I have 4.10's right now but wouldn't be opposed to 4.56's.
 

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that's definately food for thought. Thank you. What do you think of the grind? It is a custom that my buddy come up with.
Just to give you an idea, here is out street combo, which is radical like yours, the engine has been the same for 4-5 years

- Full steel '70 chevelle
- 327 bored .030" over
- Dart 215cc old style heads
- 12.9:1 compression
- 260/268 @.050 .630/.630 110° lobe center {no where near as fast as the big cams but sounds good on the street with the hooker aero chamber exhaust}
- TH-400 with 4,200rpm stall and transbrake
- old 5.38 tractor gears {as Bob West would say !!!!!!!} in the 12 bolt

Go to this link and click on trmnatr video, this was during the '07 Nostalgia event, 12.182 @110.04mph with a 1.68 60'
http://chevelledotcom.com//video/
 
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I am building a 383 for my new Chevelle. I have included some of the specs to get an idea of what some people think.
71 Chevy 350 4 bolt block
Scat forged crank
Eagle forged rods
SRP 11.8:1 pistons
Comp solid roller custom grind cam
gross lift .648/.648 with a 1.6 rocker that is .691/.691
Duration @ .050 265/273
Lobe seperation is 106.0
RHS heads 220 runner 2.05 1.62 valves
Pro Magnum 1.6 roller rockers
Super victor intake
and a quick fuel to top it all off. Not sure what size yet, thinking 800ish
Of course everything is balanced and blueprinted very nicely!!!
I wouldnt use those heads, AFR 195s
 

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Yes I have the cam stuffed away in the spare bedroom. I am going with 11.8 because I want to get away with pump gas for cruising. I was think 4500 to 4800 stall and I have 4.10's right now but wouldn't be opposed to 4.56's.
Then i think at 12:1 you would be better off with the larger Comp Cam
 

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Discussion Starter · #17 ·
Nice ride!! I have a few more cubes than that and a little more lift. You got me on compression and gears. Our heads are probably in the same neighborhood. So I guess my real question is do you think my goal e.t. is far fetched?
 

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I wouldnt use those heads, AFR 195s
He already has the heads and has work in them, they will work fine with his set up

AFR's seem to have good numbers but i have always felt that HP is a combination of Heads, Compression and Cam. He could always go to the Dart, Brodix or AFR heads down the road
 

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Nice ride!! I have a few more cubes than that and a little more lift. You got me on compression and gears. Our heads are probably in the same neighborhood. So I guess my real question is do you think my goal e.t. is far fetched?
Give me the run down on the car, trans and rear gearing

The 327 with the same set up with the lunati cam WILL go 10.90's in a '70 chevelle

One year we might pull the cam off the shelf and put it back in, it had more torque than our 110° cam {in the video} and more HP with the set up being indentical except for cam and converter
 

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Discussion Starter · #20 ·
It has a spooled 12 bolt in the rear. Edelbrock adjustable control arms and relocation brackets. Setup 4 degrees under center. Like I said I could handle 4.56's but don't want to go lower. The trans is a 350 reworked to full manual forward pattern with a brake. Thinking 4500 to 4800 stall. I will be running 29.5 10.5 15 mickeys
 
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