hello

I am currently looking for new engine parts to that CUTLASS.
it is a 509 bbc 10.2 compression 188 ported heads and lunati solid cam 402a3
dominator single plane intake and 850 Demon carb
I have a 320 merlin heads, and I need a new solid cam shaft
any cam recommendations?
the car is 3.4 gears and 3500 stall converter
it is street car and i have old c-454 intake i maybe use it
 
it is a good street cam, maybe a little small for 509
I have looked at lunati voodoo and the Howards
some 250-260 108-110 lsa.
but that is maybe too much cam on the street and my gears
 
as you increase the duration you tend to loose some low rpm torque and ease of drive-ability at lower rpms but a 509 with a 3500 stall converter and 10.2:1 compression can certainly use a bit larger cam, but your real goal should be more useable power, not just more peak horse power
but if I was building the engine ID select a HYDRAULIC ROLLER CAM LIKE THIS
http://www.cranecams.com/product/cart.p ... il&p=24233

and Id strongly suggest you install that DUAL PLANE intake, as the ROLLER CAM and intake should produce more useable power especially with that 3.42:1 rear gear ratio and your intended goal of street use, selecting the dual plane intake manifold will tend too increase port air speeds partially increasing the efficiency of the 320cc ports which are fine, but on the larger size of the port size range ,of what works on a 509 displacement on a street car, especially if your not using nitrous or racing and spinning the engine up into the 5500rpm-6500rpm plus area

don,t forget the stock rear differential may need to be upgraded if you have a significant power increase.
chevelledana.jpg

chevelledana1.jpg

http://www.summitracing.com/search/Prod ... ssemblies/

read thru this
viewtopic.php?f=52&t=3802
 
Roller cams are good but I have heard too many horror stories about broken engines
that is why I used solid cams
509 engines are rare here in the Arctic Circle
 
most ROLLER CAM HORROR STORIES are the DIRECT RESULT of guys failing to check, valve train clearances, geometry or use of the wrong valve spring load rates , almost all modern car engines use hydraulic roller cams and getting 150K plus miles on a hydraulic roller cam is far from rare, Id say theres far more chance of a flat tappet cam wearing out a lifter or a cam lobe, than there is of a PROPERLY SET UP AND INSTALLED roller cam valve train failing, in the same time and mileage, thats one reason the factory's swapped, some others are increased performance and reduced friction, if you use the correct valve train geometry and valve spring load rates without selecting an overly agreasive lobe design or excessive lift youll find roller cams can last a very long time, but obviously really high valve spring pressure or rpm levels reduces durability rapidly
 
stepside said:
509 engines are rare here in the Arctic Circle
Click to expand...
Now that's funny! :lol: :lol: .......I guess you really do have a Cold Air Induction system there.

Just how many race tracks do you have there ???

 
yep if you have the wrong carburetor jetting, it can freeze in cold air
there are not that close to the drag strip, but we have a summer street races at the small airports
 
its very common for guys to find a dual plane intake noticeably increases the low and mid rpm torque and raises the average power at the rear wheels, single plane intakes can allow an engine to breath more efficiently at higher rpms but in most cases the engine spends so little time up in the single plane intakes efficient power band that its not worth the sacrifice in average torque or mid rpm range power levels to get the few (if any) extra peak horse power.
you might want to try adding air shocks as they can be rather useful in tuning a suspension

viewtopic.php?f=86&t=5256&p=15550&hilit=suspension+chevelle#p15550

http://www.jegs.com/i/Jegster/550/41047 ... tId=757424

http://chevellestuff.net/qd/frames.htm

http://www.chevyhiperformance.com/tech/ ... ewall.html

http://www.carcraft.com/techarticles/cc ... ewall.html

http://www.chevyhiperformance.com/techa ... ewall.html
 
I've tried different plenium Dividers, and the engine works best with open plenium
I have welded tubular control arms, and transferred the lower mounting points 2" down
shocks are koni adjustable
old slicks was 26 8.5 15 mt et drag
new slics are 28 12.5 15 mt et street biger diameter maybe help
 
stepside said:
I've tried different plenium Dividers, and the engine works best with open plenium
I have welded tubular control arms, and transferred the lower mounting points 2" down
shocks are koni adjustable
old slicks was 26 8.5 15 mt et drag
new slics are 28 12.5 15 mt et street biger diameter maybe help
Click to expand...

You definitely going to have a larger contact patch, but it's also going to lower your RPM by about 200.

How about some pictures, I'd love to see what shop in the Arctic circle looks like and some of the your fabrications.

viewtopic.php?f=99&t=3355


 

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I swear I scanned your topic before I asked about pics, I just didn't see the link in your first post. :oops:

That's got to make accomplishing some projects harder when your that far north!

 
during winter time here is 3foot snow and -30 celsius decrees cold , nothing works and you cant see the sun in 3 months.
and parts are really hard to find and expensive so i fabricate almoust everything myself
 
stepside said:
during winter time here is 3foot snow and -30 Celsius decrees cold , nothing works and you cant see the sun in 3 months.
and parts are really hard to find and expensive so i fabricate almost everything myself
Click to expand...

Your location mandates that you have to be MORE resourceful than the rest of us. I've always
found that when you complete in any kind of competition that is over your abilities (bottom 10%),
you come out at the end a bit better each time. But when you always go back to the same place
where your at the top 10% you will never get better. My personal experiences has taught me
such things!

You (stepside) have to be better and more resourceful than 99% or the rest of the world. Keep
us in the loop on your projects, it will make the rest of better !!!

 
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