I have decided to upgrade my current motor with some Dart heads. 64cc volume. I wanted to know if a Lunati cam, lifters, rocker arms would be a good combo. The cam will be a 276 intake 282 exhaust duration and a 507 lift on both. the plan is to stroker the motor this time next yr. From what I was told on this site I have some 76cc heads that are pretty much junk.

 

You need to give a lot more details then that.

What motor (assuming 383), compression, what Dart heads, what are the cam's @.050 numbers, etc etc etc.

 

Dart heads.. what size runners?? And just call Lunati and get them to grind you a cam for your specific application... it's the same price, so you might as well just do that instead.

 

Cylinder Head StyleAssembledCylinder Head MaterialAluminumCylinder Head FinishNaturalCombustion Chamber Volume (cc)64CNC-Machined Combustion ChamberYesIntake Runner Volume (cc)227ccExhaust Runner Volume (cc)85ccCNC-Machined Intake RunnerYesCNC-Machined Exhaust RunnerYesCombustion Chamber StyleHeartIntake Port LocationStandardExhaust Port ShapeSquareExhaust Port LocationStandardSpark Plug StyleAngleIntake Valves IncludedYesIntake Valve Diameter (in)2.080 in.Exhaust Valves IncludedYesExhaust Valve Diameter (in)1.600 in.Valve Springs IncludedYesMaximum Valve Lift (in)0.690 in.Outside Diameter of Outer Spring (in)1.550 in.Damper Spring IncludedYesNumber of Springs Per ValveDualRetainers IncludedYesRetainer MaterialTitaniumLocks IncludedYesLock Style10 degreeValve Stem Seals IncludedYesValve Stem Seal StylePC sealRocker Arm Studs IncludedYesRocker Arm Nut Thread Size7/16-20 in.Rocker Arms IncludedNoRocker Arm Nuts IncludedNoGuideplates IncludedYesGuideplate Pushrod Size5/16 in.Valve Cover Mounting StyleCenter and perimeter boltAccessory Bolt Holes DrilledYesIntake Valve Angle24Exhaust Valve Angle15Valve Guides IncludedYesValve Guide MaterialManganese bronzeValve Seats MachinedYesValve Seat Machine Style4-angle intake/3-angle exhaustValve Seat MaterialDuctile ironSteam Holes DrilledNoOiling StyleThrough pushrodMachined for O-RingNoHeat CrossoverNoQuantitySold individually.CalculatorCompression Calculator

 

Not the best way to try to add information.
Even though, that is just the heads. Where is all of the other information?

 

My fault I was in a rush when I made that last post. The intake runner is 227cc and the exhaust is 85 cc aluminum heads cnc machined

 

I dont hav ethe funds to stroke the motor yet, I decided to start with the top of the motor firts with heads, cam, ect. The cam I was looking at is a Lunati BareBones @ .05 Intake 232 Exhaust 242 Lift 507 on both. going with roller cam and rockers because I was told they were better.

 

Dart 11971143P - Dart Pro 1 Aluminum Cylinder Headsfrom summit are the heads i was looking @ purchasing

 

The Dart 227s are basically race heads or for some pretty serious street performance. If you're switching from a set of stock heads to those you're going to have a pretty bad mismatch. You need some serious cam and matching to compression to justify using those.

Is this going to be a fast street car, a weekend street/strip car or a trailered race car?

 

A weekend/strip car

 

Well the engine guru I spoke is a serious racer and recomended Dart heads. my question is will the lesser iron heads perform I'm just racing my friend's '87 Monte Carlo & 19?? Skylark.

 

Dart heads are good heads but you cant just throw on the largest one they make and expect it to work well.

What year 350 are you working with? is it stock bottom end? L98? You haven't posted nearly enough information to make a reasonable decision on which heads and what cam

 

I think you're in a little too deep at the moment. You need to do some research on things, and assess your goals as well as budget. You can upgrade things piece-by-piece, but those heads are going to be horrible on a 350 if you plan on driving it anywhere on the weekends.

 

The engine is bored .3 over,stock stroke, after market Comp Cam from what was told to me by the previous owner. but the more I dug into the motor it appeared that the motor had been sprayed. So I called the mechanic and he said that the car is set up for spray.

 

Assuming flat top pistons for 10-10.3 to 1 comp? What heads are on it now and do you know how big the cam is currently?

Most street strip 350's do well with heads in the 190-200cc range, valves 2.02-2.055. Usually good for a 0-6800 rpm range. Dart Pro 1 Platinums in the 200 cc range would work well for you.

The 227's are for 400" motors or high winding 8000rpm type 355-383's

 

well I am looking to have 400-450hp that I could play with on the weekend but everything I look to buy is sold individually and not as a kit. Except trick flow wo has a complete set up heads, lifters, cam, ect. would that be my best bet, to get what I want @ a decent price?

 

From what I can gather on the motor it still has the stock crank just new pistons after he bored the motor I guess, they are flat top pistons. the block is from a 1976-1979 truck I can't remember I can't find the Casting number @ the moment @ work right now.

 

Well bottom end should hold some decent power as long as the rpms are kept lower.

Just get the Dart platinum 200cc heads and a lunati voodoo flat tappet cam of your choice...something around 276 advertised duration, 224-230 duration at .050. That will make near 450hp

 

And if I put a 700R4 behind it with a corvette conversion/ shift kit how much to the wheels roughly. 3.73 rear gears

 

So I decided to take Orr89rocz's advise going with the Dart Pro 1 aluminum heads 215 intake runner, 64cc. With a Lunati Voodoo cam 231/241 @0.50 & lifter, rocker arms, pushrods. For 1500 plus shipping from summit racing, well under my 4000 budget!

 

I wouldnt do 215s. 200s will be plenty for what you want.

 

How much more will the 215 give me compared to the 200

 

Its not a matter of loss or gain, but of what you are looking for. 215's are gonna gain in the 5500rpm+ and most likely lose out everywhere else in the power band. I doubt you are gonna turn the RPM's or the have the cubes to need/support those heads.

And for that price, AFR 195's would have been the fool proof choice.

 

and just to be clear - AFR's can be ported out larger in the event you need more airflow. That's what they're designed for. Bigger is NOT always better. Go too big and your car will be a slug because you've got no port velocity to push things along. The key (with anything car related) is balance with the parts of your choice.