Cheap 383

The 504/525 voodoo cam works great but might be a little to much with 1.6 rockers.
750Cfm is plenty do not make the mistake of over carbing your engine.
Using a big cam to reduce cylinder pressure does not work because it will only reduce pressure it idle and low rpm and low speeds you will need to stay under 10:1CR to run 91 octane pump gas.
The rpm intake works well or the weiand air strike or even the x-celerator with the divider plate work great.  
Professional hi-performance engine builder

Horsepower sells Engines and torque wins races.

Read this.

http://www.compcams.com/Community/Articles/Details.asp?ID=1945664039

It has two 500+ horse power small blocks a 355 and a 383 useing all out of the box parts so others can build them and they run on 87 octane fuel.

Read the camshaft part were the tell how useing a big cam allows them to use 87 octane by lowering cylinder pressure.  

Ya it only lowers cylinder pressures at the lower rpm range its a band aid regardless of what any one tells you the real reason they are able to run 87octane pump gas with the 9.75:1CR is that they are using aluminum heads which have a high tolerance against detonation.  
Professional hi-performance engine builder

Horsepower sells Engines and torque wins races.

Ok, it sounds like you know what your talking about, so will I be safe useing 91 octane with 350 horse heads, and this cam, and 10:1 CR, without having to back off my timing.  

if this is your short list,then go with the Thumper...but look at the list i gave you...i have taken all this into consideration...

NO on vac secondary carb for street n strip car..they belong on a towtruck or a cruiser...

11 to 1 and 93 pump gas DO mix...yes you will need to bleed down the cylinder pressure...and have the correct timing curve...

Bill Talyor builds some good stuff...A1 there ...it might/should stall higher with your new combo....


good luck grasshopper  

pontiacman,dude... i have to call BS here...

i seriously doubt you are a professional engine builder...  

cylinder pressure is constant...has NOTHING to do with RPM...there is NO relationship there..NONE...it is what is...do you want to increase cylinder pressure?if you have a solid camshaft its easy...tighten the lash!!there will be a slight increase...do you know what overlap is???

the cylinder head thing being alum might let you get away with slightly more STATIC CR...BUT DYNAMIC compression is what the dude (chevelle) is talking about....

you can have a 12:1 BBC crank 160 on the guage....

regards to all



alan  

....on a dual plane intake equipped motor,the engine only sees 1/2 the cfm....

air is air...the FUEL CURVE is whats important...  

nitrousnerd,dude you need to learn more about engines before you come with that B.S. you are talking. You don't know enough about engines if you believe that crap your talking about, big cams will bleed off cylinder pressure at lower rpm only that is a fact and any body that knows and has real world knowledge about engines knows that.
Oh by the way tightening the lash too much on a solid cam is a great way to bend push rods.
Talk what you know and leave the b.s. for bench racing with buddy's and not for people who are trying to learn correct info.  
Professional hi-performance engine builder

Horsepower sells Engines and torque wins races.

(chevelle311)What cam are we talking about now just want to be sure.  
Professional hi-performance engine builder

Horsepower sells Engines and torque wins races.

Remember the car has a powerglide and first gear is a really high 1.76:1 and with the 3.73s out back final drive ratio for first is only 6.56:1, a TH-350 with 2.73s out back has a lower first gear than this, so a Double pumper might be to much air and fuel all at once from a dead stop, even with a 2500RPM stall.

And how much differance is there between the Lunati and the Thumper, the Lunati has lower duration so that should help with it at idle and has a higher RPM range than the Thumper, the Thumper dies off at 5900 when the Lunati dies off at 6400 and they both start at the same 2200RPM and I think they have the same overlap.

I have been told by one of the old engine builders in town that the only way to build good Horsepower is by matching your compression, cam, intake, head flow,  and carb together correctly, so here is what I have so what do I need to build the best horsepower.

10:1CR
1 5/8 hedman headers
350 horse heads
HEI
2500RPM converter
Powerglide trans
3.73 gears

Now here are the parts that I can get that fit in my budget, so which parts on my list will work best.

Performer RPM intake or Weiand Stealth or Torker 2
Lunati Voodoo 233/241 duration .504/.525 or Thumper 235/249 duration .521/.507 lift
What carb (holley)

I want to run 91 pump gas  

I would use the performer rpm intake and the voodoo cam .504/.525 I am not a comp cams fan the thumper was designed with that choppy idle sound in mind first and performance second.
With these parts and the heads you have a 700DP holley would be the largest carb. that I would use.
Who ever told you that you need too match the parts for the best results is right on the money.

anything else just ask.  
Professional hi-performance engine builder

Horsepower sells Engines and torque wins races.

...go through and read my post again.....wrap your brain around what you posted...thats BS...admit it,,, you just learned something tonite...dont be embarrassed      



so:the question is:

are you are professional engine builder???its really hard to tell with your vague one liners...

not here to pick on you man..but i will call BS, ANYTIME if i see false info..thats all..


regards to all  

just so i get this right,cuz i really dont know much about engines...

in your post you are basically saying that you are bleeding off pressure at low rpm (and not at high(er).....RPM has nuthing to do with it...dynamic compression is what you see on the guage...the compression guage... i can get a 10 to one motor with a short cam to crank 200psi...and a 12'1 bbc to go 160...it all depends...


Rhoads lifters...now they bleed down cylinder pressure how???THAT function is RPM related...  

Ok. nitrousnerd do you agree with pontiacman on his post about the performer RPM intake and the Lunati cam and the 700DP or do you have a different opinion.  

i am not here to 'disagree' with anyone....i am just offering 21 yrs of retail,wholesale and shop/race/tuning experience...FOR FREE...i dont have to...but i like to share what i have learned....there is A LOT of info in my past 15 posts or so...

i know what works and what works BETTER...thats all.you dont know me from poop,but the people in the indusrty that do..will tell you i am humble...but i will still
call BS when i see it..thats not arrogance-thats the right thing to do, as a speedshop owner and gearhead.....

i am not brand loyal...i have preferences (we all do..it could be percieved value or because i get along real good with the rep..or because it works real well..)

dont get me wrong here,,the Lunati piece is a great piece..but IN YOUR CASE,,the Compstick is better....WHY you say???

heres why; the 14 degree spread will help favor the exhaust side when you plan on using the juice...yes,PM man was partially correct (actually he was vague again)...they are marketed for the sound....a great profile..but how do they get that sound????BY OPENING THE EXHAUST VALVE SOONER during the ex stroke...same as a NOS cam but without widening the LSA....the best of both worlds IN YOUR CASE.


yes on the intake and yes on the carb...many ways to get to where you want to go.