Reading back through my previous post,I feel the "Head Flow" is probably more a limit to more power & revs with this cam than the size of the Cam itself.
I have my distributor set-up with a light spring. It has 20 degrees initial for starting & instantly goes to 36 once running. In top gear I can go to full-throttle once I'm up to about 1800 without getting the "clatters"(pinking).

In 1996 I built my first 496 from a 440 block, 4.15 crank, eagle H-beam rods,wiseco pistons with a 10.1 compression ratio and B&B lightweight wrist pins (155 grams)instead of about 235 for other pins. The cam was a hydralic 540 something lift Comp cam,Holley 850 DP, I had Mopar Performance stage 1 heads with a set of stamped steel rocker arms and a Carter high volume fuel pump. 6 quart Hemi oil pan,high volume MP oil pump, with 3 inch full exhaust,I drove it a bunch on the street and at the track it ran 11.7 @117 MPH on pump gas and never broke in 15 years of abuse, it also would rev like a 340. I would suggest on your motor Harland Sharp rockers and Indy ported SR-295 Heads they work great and flow good numbers, a light rotating assembly is the key, the guy that now owns the motor is still running it today, I went to the finals racing it at Mopars at the Strip and the semi finals at the Mopar Nationals it was even features in Car Craft in Mar 2003 I have also built 572 stroker motors this 496 is your best bang for the buck, the car ran great on super unleaded it is a red 69 Road Runner with a 727 2500 stall converter 354 gears in a Dana 60

72blubird: Hi Glen.
That is the one thing I can't remember. I do belive to be 80cc's. It's a few years since I put this motor together.
Vacumn is 12 inches at 800. Plenty for the brake booster.
Any question's, just ask.
Mike

Sorry op not trying to hijack thread. Reason I asked about vacuum is I am building 470ci 400 block stealth heads 440 source .035 stroker kit. hoping vacuum will be enough hearing your combo is encouraging. Also you said it was a four speed what rpm did you leave the line at?

I will also be at close to 4000lbs with driver using 3.23 gears and a 4 speed. using Comp Cams Xtreme Energy High Lift XE285HL hydraulic flat tappet camAdvertised Duration .285 int .297 ex/Dur @.050; .241 in .247 ex/ Lift .545 in. 545 ex with 1.5 rockers. Lobe Separation Angle 110.

Thats a very small cam for a 496. I would go with more cam and it will help keep the cyl pressure down to make it pump gas friendly. I use dished pistons in my 493 and I have 10.6 comp with quench and healthy flat tappet cam that is 264 & 270 @ .050 with .630 lift using 1.6 rockers. I run fine on 92 pump as I only run pump gas. Here is a pic of my dished pistons. Ron

Add about 10 degrees of duration to that cam and you will have a nice idle with lots of torque everywhere.It will feed the low end and midrange which is where you will need to be with those heads in stock form.

Remember sucking in hot under hood air will put you in detonation much sooner than air from outside the engine compartment.

You can play with timing and rate of advance but something in the 10-10.5-1 range with the added duration will give you a nice mild mannered fun to drive car that will turn into Dr Jekyl when you hammer the gas.

Well guys this is the cam chose in this:Hydraulic. Hot Street cam, likes 2800 converter, Hi-Rise type dual plane intake with 850cfm carb, headers, 10:1 compression and 3.73 gears. Likes up to 200HP nitrous.
• Advertised Duration (Int/Exh): 276/284 e
• Duration @ .050 (Int/Exh): 234/242
• Gross Valve Lift (Int/Exh): .513/.533
• LSA/ICL: 110/106
• Valve Lash (Int/Exh): Hyd/Hyd
• RPM Range: 2200-6400
• Includes:



This is slightly bigger than the big last one. I understand many people like big cam, I am just not one of those guys. I want my car to be a sleeper. I also have elected to send the pistons back to Hughes and get the dished pistons with a 13cc in the piston. This should put me at 10.5. I will be happy with that, I think I will enjoty this combo alot. I will have my local engine shop balance the kit using all needed parts. I have one question tho, can I use my 383 harmonic balancer or will I need one specifically for my 440? Thanks guys in advance.

Sounds like we have similar goals for our strokers. I have mentioned this is another thread. I am going to freshen my 496 stroker this upcoming winter by keeping 500CID Cadillac engine cam specs in mind. I really want max torque down low thinking that it will be a lot more fun to drive on the street with my 4 speed and 3.23 gear. Might even be able to swap to 2.94 or 2.76's. Probably time to swap out my Koffel prepped 906's for Eddy's also. My current setup is a lot of fun, but really more suited for the track than the street.

72bluebird: Glen; I don't like the stress that would go through drive-train with loading the revs & dumping the clutch, so I just sorta hit the peddle from about 1200 revs & do a double bounce on the clutch to launch out without bogging. At one meeting I did 17 runs & every 60ft time was 2:0-2:06 sec's, so I'm very consistant.
Clutch is a Center-Force Dual-Friction which lasted three years of pretty hard launching. Ram Twin-Plate next time for me.

Anthony; I would suggest you opt for having your piston very close to flush with block deck. You "will" make some pretty high pressure with that cam, especially installed advanced 4 degrees.
You will have a better/safer engine with a higher cylinder pressure,if quench is 40-45thou.(ie:Distance between closed chamber face & top of piston). If you go more than this I feel a slightly larger cam may be a safer option.
Pump gas,with good matching of all parts, will support up to 200 lbs Compression. Get the quench wrong & you may need to drop 20 lbs.

Mike that 60 ft is very good. If I could be that consistent I will be thrilled. Your rpm is right where I was thinking. Had thoughts of trying 1500 but may try a bit lower. What kind of tires do you run? If I get through this and can still afford it I want to get a centerforce clutch have a mcleod now. My brother has a center force and loves it.

Glen; I use M/T Streets @ the strip. Hell! On street tires I use to do 200 yard power slides. The crowd loved it! Had no traction so just had some fun for the crowd. Cars beside me were a bit intimidated though! Ha!Ha!
Mike