I have a question as to how streetable this motor combination is? I have a 400 stroked to a 499ci with a A7I balancer,Mopar stage 6 heads that have been ported, Comp 308R roller cam, RPM 4130 Crank, I beam rods, Smith brothers push rods, Crane GOLD rockers with offset and drain back mod, aluminum main caps and studs, I con flat top pistons.

Please any advise would be greatly appreciated.

What is the compression ratio and what type and octane fuel are you planning on using?
Also what are the cam specs. at .050 lifter lift and what is the lobe separation angle and where did you or are you going to install the intake lobe centers?

Duration 308/308, .575 lift, 10.5 - 11.00 compression ratio. I dont know the valve spring pressure. I'm planning to run 100-105 octane.

Cam Specs:
Basic Operating RPM Range: 4,000-7,200
Intake Duration at 050 inch Lift: 262
Exhaust Duration at 050 inch Lift: 262
Duration at 050 inch Lift: 262 int./262 exh.
Advertised Intake Duration: 308
Advertised Exhaust Duration: 308

Sounds good to me. If that is the older 308 street roller, it would be ground on 110.
It should be pretty streetable as long as the rest of the car is set up for it,
And if you enjoy driving it. It seems what the driver can tolerate is
Really the determining factor.

I assume these are alum heads.. with 11.0 and
those specs and a nice conv its very streetable
and most people would like it.. just make sure
it has enough gear and stall so it gets into
the revs....... and welcome

One of the main things you need to do to help this motor run excellent is to make sure the cam is degreed into 3 to 6 degrees advanced on the intake lobe centers
Your roller cam specs. are close to the same cam in the first pump gas stroker street motor I made for myself, it was 260@.050 on the intakes and 266@.050 on the exhaust lobes, ground on 108 LSA. I installed it at 106 intake lobe center (2 degrees advance) so it wouldn't spin the tires as easy as if I had installed it at 4 to 6 degrees advanced. That motor made me very happy and far exceeded my expectations
It was a 4.250 stroke in a 400 block with 4.375 bore to start with, it had a set of ported big valve 906 heads which got replaced later with a set of CNC ported Eddy RPM. The head change pick that car up right at .2 ET and a full 3 mph in the 1/4, 10.49 at 126 + MPH on Oregon pump 91 octane pump swill through the full exhaust and with the six pak air cleaner on the low deck six intake and 440 carbs.
I change the crankshaft to a 4.300 stroke to move the pistons up from -.025 in the hole to zero deck to raise the compression ratio from 9.25 to 1 to 10.3 to 1, that picked the car up some more also
On the valve spring pressures run what the cam calls for On a solid roller cam 30 lbs. more than needed is way better than 5 lbs. to little You need to look at the coil bind on the valve springs at full open at the retainer, check that with checking springs at the retainers before setting the real springs up and shoot for .055 to .090 from coil bind on all 16 springs
On your deal I would make sure what the end compression ratio ends up at and if it is below 11.00 to 1 I would look at running 91 or the highest octane non ethanol pump swill you can buy and try that first before running race gas on the street
IHTHs
Ain't motor building and racing fun
Do it right once or do it over later

Exactly.

Said differently, The lift and lobe profiles of that cam appear to be suitable to live well on the street. But only you can decide if you find the idle and low speed characteristics to our liking.

A friend has a solid flat tappet cam with similar specs. He loves it. Very radical idle. About as bad azz as a car can sound.

Thanks for information. Anyone have any issues breaking the Crane Gold Rockers? I just put a set on but I've been told that they have been known to break easily? What's your thoughts? Should I change them?

Not sure about the Crane rockers unless it's a mild cam and my street car runs a .680-.660 276-281 @ .050 Isky solid roller and have for many miles/years w/out issues EXCEPT traction........mid 9's and very easy to drive w/very low maint................

Anyone have issues with the Crane Gold Rockers? I have been told that they are know for breaking with a .575 lift. What's your thoughts? What rockers would you recommend?

Spring pressure or improper setup is what will break them, not necessarily the amount of lift

Agree, I'm not sure of the spring pressure at this time. But, has anyone had issues with the Crane's before?

I have several motors with the Crane extruded 1.5 and one with 1.7 ratio aluminum rocker arms on two different motors, one street and one race only.
The race only motor is a bracket race motor that has the 1.7 ratio with a Crane solid roller cam that has 250 lbs. of valve seat pressure and it has around 680 lbs. open pressure it is shifted at 7000 RPM on every run with .680+ lift at the retainers with race springs on it (edited) It has never broken a rocker arm yet
That motor is old but does not have a bunch of runs on it, maybe between 300 and 500 runs total That motor was used when I got my hands on it, the pushrods where to short and those rocker arms had been abused from broken pushrod tips and around half of the adjusters had been broken off Those rocker arms had damage on the bottoms of them from the broken pushrods rubbing and pushing on them on more than three rocker arms, not sever damage but they where damaged enough to see it, I used a aluminum burr to remove the high points and a rosin roll to smooth the damages up.
I have ran a bunch of different rocker arm brands and types on street and race only motors, the Cranes you have will work fine for you You can buy better rocker arms if you want them
Don't sweat or worry about parts that works well

I still have both 1.5 and 1.6 Crane rockers and never had an issue with them with under 700 lbs. over the nose. I heard that 700 was about the limit for those and your cam should not require that much pressure. I need to sell them as both cars have different setups now.
Get a loose converter for that thing if you are running an auto. I have an 8" in mine that goes to about 4,000 on the brake. It's super fun to drive and will fry tire instantly. Passes everything but a gas station though. It gets about 2 gallons to the mile I think.

I run a combo sorta close to that as mine is a 440/493 and I run a solid flat tappet cam thats 264 & 270 @ .050 with .585 & .592 lift on a 110 LSA. I have it in my eng on a 106 ICL. I use Hughes 1.6 roller tip rockers that have worked great for me but I run less spring pressure then a roller cam. I believe the Crane Gold are good rockers as many use them. They had a bad run some years back I believe wit some adjuster problems but there are tons of them out there being used by many. Here is clip of mine that you can hear a little but its not real good as I was not at an idle all the time on this clip. But I consider it very streetable as I love it. But I agree that is up the the one who owns and drives the car really as what they call very streetable. Ron


https://www.youtube.com/watch?v=ZUNhgExUiGw&nohtml5=False