TOTALLY disagree with that .. my Howards HYDRAULIC roller, .577 lift 254 duration , idles 750rpm, 525 HP..... how big the men get in your town??

 

This one is very similar to mine, and I have been running it for a decade. Mines 254*/254* on 108LC. Idles at 1000 in gear with a custom 3000 stall and 4.11 gears. 7000 rpms is no problem.

 

Have single beehive springs in the heads now! 👍

Sound is sick! Just what I'm looking for! Though not sure my th400 would like the hearing on the highway!

 

baby cam compaired to solid rollers. Ran 265 .050 duration solid flat tappet with 310/320 advertised cams and more lift to for thousands of miles on the street no problems. hell my new stocker not even modified 302 had .254 .050.it was changed for higher .050 chevy off road cam. Sorry all do respect thats a tiney baby cam. 265 to 275 .050 beginings of a cam and have done the .275 cam. Little Mouse my sig. you do rpms or you waste your time. Ran bigger cams then yours in 454 rat and a 396. 2 1/8 headers. Until you do 4.56 in your street car have not lived. And had friends ran 4.88 and 5.13 and it was only car they had. Drove to work anywhere they went. Guys today to lazy today to even adjust valves.

 

Reason i mention the pro 55 cam core. Racers are getting away with 25, 000 miles using 450 open pressure on them. So you dont run as radical cam as them and do a behive spring on that cam core. Thing should last like forever. kISS keep it simple stupid. if you can throw it up in the air and it comes back down , its to heavy... Unless absolutly needed. My understanding when i ordered the 73 vette with no a/c no power windows, in hot hummid arkansas at the time. At age 61 rode 370 enduro suzuki 3600 miles and averaged 800 miles per day. But then i laid a board accross the two seats of mack trucks and slept on that with feet out the windows.

 

lol you talk about baby cams and then throw out ADVERTISED DURATION numbers? puhlease that's cam builders sucker bait for noobies... my roller can turn 7000 rpm too.. you prove nothing.. wheres the giant dyno HP numbers on your BIG DADDY cam SMALL BLOCK ?? surely must be in the 700-900 hp range eh? and that can drive to Florida with the A/C on??? not likely ... but mine can and has many times plus ..1300 miles to Atlanta and back... not a single issue .. a street motor has to run longer than a single 1/4 mile .

 

If the OP is keeping a small valve vortec head, lowish compression and a performer intake picking a cam that only works from 4k on up wont do him much good even with deep gearing it simply cant breathe

 

That is true for sure. Any mismatch will result in less than peak power,.....but it will have that nasty idle, and pull like crazy light to light. Power at 7000 rpms,.....not a chance. But still a fun combination.

I built a Chevelle years ago with a 327 with the factory 350 horse cam. Had a stock stall and 2.71 gears. Could not spin a tire, but the second gear shift was awesome! Also got 22 mpg which at the time was a very impressive thing for a guy in the ARMY with very little money.

 

Repkace vortec heads with cylinder heads. ISKY solid flat tappet # 201075. .050, 274/274, adv. 320/320, lift 570/570, lsa 108. Not auto person 5000 stall should do it.

 

7000 rpm nothing 8500 just right. What the hell you need a/c for you buy a caddy luxury car ? My 66 vert had no power brakes or anything else power, what does all that extra weight do for you. My uncle bought a new olds you could get it without heater thats what he ordered. Bit then he recieved distquished service cross second only to medal of honner at the battle of the bulge then fought in korea. Was not wasting money on a heater. You freeze you hiney off in the arden of germany then in korea, what you need a silly heater in a car for.

 

I used to pull the 13.1 open chamber pistons up to the local gas station and fuel up, drove it thousands of miles spun ot to 7600 very often when ever i pleased. You must be confusing the C in corvette for C in cadillac

 

yes this is all true. So guess its small cam with 106 lsa for that idle.still think he needs the 320 isky for the idle. But then he might take me seriuosly. Lol.

 

My last year of series 1, 55 chevy 3600 ( 3/4 ton ) pickup has SM 420 iron case 4 speed trans considered strongest 4 speed trans ever made. Irst gear ratio 7.05 reverse 6.78. Rear gear ratio 4.57. Looking for 360 advertised cam so it will mile an hour better then 65 mph. Can i get help or need to start new thread. Also turning it into cadillac and they forgot at factory to put A/C on it.

 

Think i have the answer. I have a 32,000 mile original 68 eldorado Cadillac that was given to me. Ill take the A/C off caddy put it on chevy truck. Rename chevy truck caddy truck.

 

That just sounds RIGHT !! And yes it could be done, he could mill the heads slightly which could reach 11-1 easily , use an RPM intake, and a Coan 10" converter, gears 3.55 or better. Done.
I have smaller and much larger cams, but may have to re-think selling the solid flat Schneider. The first aftermarket cam I bought around '79 was a solid for a 396 and it was a split duration/lift version similar to the 375hp cam and was the right choice. Solids are forgotten, but may be a much better choice vs. a hyd in a fast ramp design.

 

All this solid cam stuff is nice to talk about. Vortec head op has was nice for what gm designed it for 350 inch pickup they wanted to run to 4500 to 5000 rpm at most vast majority of its use well below that rpm. Op has built 383 any high revs in it vortec head will simply choke that off for him. Kind of like the old days with an engine as small as a 302 big cam did not matter best factory head was known to be dead at 6800 rpm on a puny 302. Then he is stuck with horrible rear end gearing only 3 speed auto trans. Yep you can do converter for better low gear launch but then what in last two gears. Until he changes rear gearing needs just a tight lobe center cam for that mean idle sound he wants. Then change heads intake and to real cam. Otherwise will be only mean sounding poser with no bite tell all that is changed.

 

Another thing to the op. The turbo 400 is a great trans will stand up to anything i know your after in power reliably. But with its strength comes a down side its known to sap 35 hp off an engine compaired to a 4 speed manual trans, then if you throw in some slippage of a higher stall converter well it gets a bit worse. My understanding the high dollar converters dont lose as much but few people will spend the bucks for them. As far as your engine making good midrange upper end power you put yourself in a bit of a box with the vortech heads and performer intake. I would suggest you find a buyer for the heads and put that money torward a 195 profiler head. They are high quality, very good breathing and very reasonable in price for all you get, were designed by pro stock engine builder when he was there since then went back to reher and morison. To my nutty freinds in the past that ran 4.88, 5.13 gearing in there only cars they had. Well i think you would be satisfied for a strong stop light to stop light car and still some decent freeway miles a bit of the time with using a 4.11 combined with a bit of stall converter. The nutty friend with 5.13 rear gearing i hauled his butt to and from work a bunch of times in my 3.73 geared 3/4 ton new chevy puckup. But not the guy with 4.88s. 4.56 great but you will want to do 55 to 60 on freeway even with hotter cam.

 

To op one final thought. Lets say you do the 4.11 rear and you have the extra arm of the 383s stroke. You now have all your torque needs covered, thats what gearing is for extra torque multiplication not just getting the engine quicker to the rpm band you put in the engine, another benefit of gearing. Dont talk yourself into really small 180 head and keeping performer intake. Let that stroker breath with the 195 head more cam timing and a rpm dual plane. Theres been a gillion of the rpm duel planes made and plenty for sale used in good condition. Here is why its such a good manifold for your build. With its taller height it allowed the designers extra torque that its longer runners give it. Then they increased the runner size. It virtually gives almost all the torgue of the performer at very low rpm with added in midrange and top end power. Manifold you need for that 383.

 

Another good benefit of the stroker arm besides its obvious extra amount of leverage for torque is that the stroker has a faster piston speed pulling the air in at a quicker higher rate of velocity through the heads and intake manifold, reason small heads and intake runners not needed for them and nothing more then a restriction to the engine at all rpm ranges.

 

Alright thanks for all the recommendations everyone! I'm compiling a list of potential final choices. Lunati also recommended me this cam. Any thoughts??

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