another cam thread
 

i am building a 454 for a 1969 chevelle,it currently has the origional 325 hp 396 and it is going to be removed and put away as a complete engine except for the starter&alternator.i was searching for parts for the short block and found from an oso member who i won,t mention his name but i am hoping he will chime in on the thread.this member had a gen 5 or 6,i can,t remember for sure for sale so i contacted him,the guy who owns the car did not want to go with a electric fuel pump so the late model block was not going to work,he mentioned that he had a mark 4 454 4 bolt short block that he built about 6 years ago and it sat in a unheated shed for 6 years and had some rust.he took it apart and texted me a bunch of pictures and the rust did not look to bad so myself and the car owner went on a 6 hour road trip.upon inspection of the parts i decided that i could clean it up and reassemble it so we struck up a deal and loaded everything up and i brought it to my shop,i sprayed everything down with my favorite oil[MARVEL MYSTERY OIL]and shoved it in the corner.a few days later i got after it with more marvel and a scotch brite pad and it was working good,to the point that one would never know it had rust.today i ordered a set of afr 265 ovals for it and started thinking about a cam.i am going to go with a hyd roller and have one in mind.i would like to hear from the usual suspects on oso about what they would pick for a cam and see who comes closest to what i am thinking about using.who ever comes the closest to the one i have in mind is going to win a prize.let,s have some fun with this fellas.

Compression?

Stick ? What ratios
Auto ? What converter
What rear gear ?
Compression ?
PB's ?
What does he want out of car ? Mild, crazy, doesn't care but just wants some dumb lope for cruise's ?

Ah comeon,I'm gonna stop with questions...you know the drill. You just forgot to mention it all...lol

ya i should of included some info.4 speed car,3.73 12 bolt.c/r will be just under 10/1,car has power brakes.he is not looking to take the car to the track,just wants a good running street car.he wanted around 450 hp but he is going to get more[i hope].

236/242 .600" lift or so, and 110LSA. It will do all things well but not one thing great....other than smoking the hides aslong as he wants when he dumps the clutch.

230/236 110 will be fine too. I would not go lower than this though...just because.

I'm assuming good exhaust system.

Psst: The way I drive, I'd be going 240 or so at .050" and prob 109 LSA.

Lunati HR
Advertised Duration (Int/Exh): 282/290
Duration @ .050 (Int/Exh): 231/239
Gross Valve Lift (Int/Exh): .600/.600
LSA/ICL: 110/106

No one asked what he wants/or can spin this engine to? Assuming 6000?

Im a muscle car purest and If the starter and alt are date code correct for the 396 then leave them on the engine and buy new, as far as cam, I would make it 3/4 race the 7/8's race lobe profile is all wrong :helmet:

We just put a 238 / 242 @.050 on a 109 LSA with just under .600 lift in my 440.
Good flowing cast iron ported heads.

Flat tappet tight lash mechanical with EDM lifters.

If he wants it to sound killer at the ice cream shop, tighten up the LSA. :coolcowboy:

3/4 cam, solid roller

Comp Cams custom billet HUC hyd roller with iron gear 410 bucks and at your door in a week. :)

239/247 109 LSA 106ICL .621/632

Sounds like the old Direct Connection Purple Shaft .590 cam nice and lumpy :)

Custom crower.

Kinda torn between 222-230 .576-.598 110 LSA an 226-234 .587-.610 112 LSA. Not overkill by any means but should be very streetable and fun.

Mark

This




Lunati 20110712 - Lunati Voodoo Camshafts

Camshaft, Hydraulic Roller Tappet, Advertised Duration 282/290, Lift .600/.600

I'd run this cam.

https://www.summitracing.com/parts/edl-2262/overview/

ran something very similar in my boats 454's,,engines rip.

this is very close to what i was thinking,you just might win the prizee.

this is very close to what i was thinking,you just might win the prize.

did you run this in your program?only looking to spin this engine to 6000 rpm.

you and snapmorgan listed the same cam,very close to what i was thinking.

yes. I figured you'd be wantin to spin her to 6000ish . I'd prob go a bit smaller if it was an automatic car or less compression, but with the 4spd and 10:1, i'd think she'd run well with it.

I think she might have 600hp in it with that combo. Did you get the cnc chamber option?

yes.imo well worth the money.

Fwiw. The intake valve closing point, is prob the #1 player in a cams power curve. The valves closing point can change with ICL .

109 LSA with 106 ICL= 45* intake close. Pipe max says good for 5931RPM
112 LSA with 109 ICL = 48.5 * intake close. Pipe max says good for 6161RPM
114 LSA with 110 ICL = 49.5 * intake close. Pipe max says good for 6238RPM

A change in LSA, or really ICL, can change the powerband, even though the .050 duration, doesn't change. Looking at almost 300rpm there.

A 222* intake lobe, with LSA of say 110, typically having a ICL of 106, would close the intake valve at 37*. Pipe max says good for 5277RPM. (makes sense when you think about it. A 454 Magnum, has a 224 intake lobe, with 115 LSA, and is done around 5200. A tighter LSA cam, will peak sooner typically bc the intake valve closes sooner)

A 231* intake lobe, like that Lunati Snap suggested, having a 110 LSA and 106 ICL, has an intake closing of 41.5*. Pipe max says good for 5623RPM.

I know an OSO member, who has 454's with 308 Darts. 230/235 ish madera cams. 9.2:1, 850 carb, victor jr intakes if I recall. Made 530hp and was done at 5300ish on the dyno. He's installing bigger cams currently.

for sure!

Keep in mind he said it had power brakes. That means 18" vacuum at idle for them to work properly. Really limits cam selection. I just fought through this on my Cobra replica with stack injection. Ended up adding a vacuum pump from a diesel pickup to solve it.

You ever run that cam by chance? I've always thought it would be a cool cam for American muscle and make some decent power also.

How about a ZL1/L88 427 mechanical flat tappet

262/272 110 LSA

https://www.youtube.com/watch?v=lDfM35SVRk0

Or a stock cam from a 1970 LS6 454 Chevelle . Hyd flat tappet

242/242 @ .050 .520/.520 lift 114 LSA

Whats with this 222* crap? Are we building an engine for mom's wagon, or we gonna make some noise and bang some gears? :coolcowboy:

That engines worth a 100K, this engine option doubled the cost of the car............ sweet post

Mike, I never recommend cams these days but I can tell you what I run in my 396 69 Camaro. custom comp grind solid roller, 263/274 648/646 109 lsa, 49* overlap, 25/25 lash, 12.5 CR 7/16 push rods comp rller rockers, through cambered exhaust. won't really work for your build, But if your customer wants to rattle the glass at the soda shop that's the ticket!!

The GM crate 427/480HP engine, is 10:1, uses the same 224/234 110 LSA the ZZ502 crate engine uses. The 427 makes 480hp around 5800rpm. The ZZ502, makes 508hp at 5200rpm. Same heads, same cam, 9.6:1.

Im almost positive that cam is a BILLET core, and availble for 200 bucks new

Camshaft Type (P/N 12366543)

Bet that thing sounds sweet. What about the vette cam? :)

I have a new one in my stock that I will sell cheep if you want it Mike!!! Good call Mild!! that cam would be high on my list!

GM 3959180 2nd design L-88, ZL-1 cam, also used in the LS-7. I'm just finishing up on my street car and found a NOS GM one that I used with Crower EDM lifters.
I'm sure power was left on the table compared to a modern roller but I wasn't too concerned with that, besides have you ever heard one of these cams?

oh yeah the 427 cam, well the car was a 390 horse at birth, and when I got the car in 1973 I just had to stick a 425 horse flat tappet solid GM cam, last year I rebuilt the engine and actually installed the updated Crane version of that flat tappet cam. I want to run that car out route 66 soon so I went to a relatively calm driver cam. But I did put a nasty little Bullet flat tappet Cam in my 302 cougar with headers 2 years ago when I rebuilt that engine.

I think we all must have a sickness taking engines on a Saturday night!

i appreciate the offer tony but i need to do some thinking before i buy a cam.the car owner wants it strong lite to lite but i would like 550 hp at 6000 rpm.

Hey lee.
FYI:
Check those crower EDM lifters real closely!
I just bought a set last spring / late winter and one was absent the EDM hole.
I had to send it back and get a replacement.
Probably just a fluke, but just a heads up.

I usually do this...1800-cam-help..comp, grinding me a special SB cam as we speak for boat engine I'm doing now

after doing some research i decided to go with a crane 168741 cam.in this small 462 cu in engine i think it will pull hard to 6400 or so and still have more low end grunt than the car can use.the heads came today and i gotta say they are a thing of beauty.the polished cnc chaimbers look awsome.