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J327HO 02-07-2005 03:56 PM

Horsepower/torque from 327 engine build??
"sorry about putting this in someone elses thread,I am ...

hello and my brother are having a 67' 327 built's whats going into it...

small journal steel crank checked,polished - .10 undersized
stock rods from 67' 327
clevette77 ' H ' series rod & main bearings
ALL ARP bolts & studs *every bolt inside and out*
speed pro power forged aluminum pistons (10.35 comp. ratio )
childs&albert dura-moly rings
TCI rattler dampener *balancer*
Crane Cams blue racer double roller timing set
Herbert solid lifter cam - .518/.536 lift - dur.- 280-288 ...
herbert solid lifters
Herbert swedged end (.080" wall ) 1 piece pushrods
World Sportsman 2 64cc Heads - straight plug - 2.02/1.60 valves
Comp Cams magnum roller rockers - 1.5 ratio
Fel-pro gaskets used except head gaskets
SCE pro copper head gaskets .032" thick
melling high volume oil pump - & Melling pump shaft
Herbert extra capacity (7 qt.) oil pan & pickup
MSD pro billet distributer with vacuum advance - & 6T box,etc
MSD 8.5 wires
Edelbrock Victor Jr. (1" taller) aluminum single plane intake
Edelbrock performer 750 carburetor
Edelbrock performer 110 gph fuel pump & Herbert pump pushrod

... anyways ...if im missing something just tell me,lol... what would the horsepower potential be for this setup we're doing here??? the block work was donr by Jungle, it is .60 over ...everything was checked,crank is great! ...anyways,like to know the power potential we'll have with this... Thanks!!!

oh,we might go with a Holley street avenger 770 carb,just depends....and the engine is going to be balanced by a race shop close to here....everyone swears by them and there work.. so.. :)

cam specs -

RPM range - 2500-7000
int.-Dur.-exh. - 280...288
int.-.050-exh. - 244..252
int.-lift-exh. - .518/.536

Lash-lobe C - .024- 106c

killerformula 02-07-2005 03:59 PM

Tell you one thing man, I wouldn't build that motor. Iron heads with almost 10.5 compression is going to be tough to deal with on the street (I have the same problem). Cam and intake are not good choices for the street, carb is too big.


J327HO 02-07-2005 04:05 PM


Originally posted by killerformula
Tell you one thing man, I wouldn't build that motor. Iron heads with almost 10.5 compression is going to be tough to deal with on the street (I have the same problem). Cam and intake are not good choices for the street, carb is too big.


we have a daily driver,so we are not worry about streetabilty...even though it will be taken out on weekends to the track and through town...

just put it this way,not worried about how it *rides* or go's on the street....just building an all out motor for kickin' ***...

Siggy_Freud 02-07-2005 04:07 PM

This looks almost like an engine combo that would be better suited for a larger CU.IN smallblock. You are putting a pretty hefty cam (even for a larger cube smallblock) and a high RPM intake in there and like killer said, it wouldn't be a nice street combo. Also, like killer said, the carb is too big. Even with those heads and cam, you aren't going to flow enough to warrant such a large carb. You dont have the cubes for it.

What is the purpose of this car going to be? Street car? Strip only?

As it is now, the engine is really going to dog off the line and isn't going to start making power until the mid-high 3000 RPM range.

J327HO 02-07-2005 04:16 PM will be street/strip, carb too big? we're running a edelbrock 750 on our current 327 and have excellent power mid,low and high end,and it is definetly not as built up as this one is going to be ....yes...sounds alittle wacked about putting all this into a 327 but,the block,crank and rods were free! Got it for christmas from our uncle with all machine work done...

by the way....done got most of everything for it...also the headers are going to be patriot clipster headers....I think the primary tubes are 1 5/8" ...

firestone 02-07-2005 04:25 PM

If you plan on running 100 octane, and around a 4000 stall, It will probably work ok. As said before, it is not going to be much of a snappy street motor, It will make all of its hp up high.


J327HO 02-07-2005 04:38 PM much horsepower,torque do you guys think it will be running??!! lol...thats all I wanted to know/

.... 116 octane will be ran ...and if possible...97

bracketeer 02-07-2005 04:42 PM

my 2 cents
I think its not a bad combo. Wouldn't hook a tranny brake to it. Cam is a little steep. But that carb is way too big.

10.5 compression hardly requires 100 octane (I have never heard of that), VP 110 is common enough. 92 Octane (in Canada we have 96) and 3200 stall will be sufficient.

J327HO 02-07-2005 04:53 PM

carb too big eh? well...any suggestions on what carb to buy??.....a built TH400 will be backing it up also...with a good stall,and,what kinda power am I expecting? 300? 400?, :confused:

oh! about the carb....I have a question...on Edelbrock performer RPM crate engines,they have a 800cfm carb...are they over carbed or something? I mean...I know cubes make a differance but...dang I am confused alittle...

OddRodder 02-07-2005 04:54 PM

Honestly, your 327 isn't much different than mine. Mine runs fine on premium at nearly 10.5 to 1, I use vortec heads and have a tight quench at .040. Your solid cam is a step larger than my hydraulic (.480"i, .494"e, 284 i, 290e advertised, 228 and 234 at .050 with a 106 LSA). I run a 4 speed and feel that this cam would be very poorly matched with anything less than a 3500 stall in an automatic!! I run a 650 dbl.pumper on an air-gap dualplane intake. I feel that my combination is well thought out and the lil. 327 screams. Remember performance is give and take, if you went a little more conservative with cam, intake and carb. size it will be a much more enjoyable Street engine with just a tad less Strip performance.

firestone 02-07-2005 04:56 PM

I dont know if this gas is just something where I live, but it is an unleadded street legal fuel with 100 octane that you can pump directly into your street car, it costs around $4.00 a gallon. As far as the compression goes, you can run over 10:1 compression with iron heads on pump gas, but it usually doenst work very well unless you have some other stuff (cam/quench/...) right for it. Also, the reason that I recommended the 4000 stall is that the victor jr intake is not supposed to make good power until. 3500 RPM or higher especially on a smaller motor like your 327. I agree that if you changed your intake, a stall that large would not be needed.


J327HO 02-07-2005 05:01 PM

well oddrodder,we were just going to build a nice cruising street engine but have been giving some thought and been getting our butts whooped by mustangs around here...couldnt go with something thats just normal....We want a high revvin',high rpm,power house...that doesnt back down to nothing :thumbup: lol....I dont just a wild one with a heavy foot ya know :)

firestone 02-07-2005 05:06 PM

As far as your original question goes, I think 1.1 to 1.2 hp per cubic inch should be attainable which would put you around 350 - 400 hp. With the carb, I would recommend a 650 demon. I do beleive that the crate motors you are refering to are over carbbed.


J327HO 02-07-2005 05:08 PM

the 327 we have now is a 68 large journal. ..stock rods...forged flattop pistons,camel hump heads (2.02/1.60 valves) ..RV cam,wont punch over 4,500 driving....weind single plane xcellerater intake,edelbrock 750 carb, makes alright power....just not enough for me


Originally posted by firestone
As far as your original question goes, I think 1.1 to 1.2 hp per cubic inch should be attainable which would put you around 350 - 400 hp.


Great!! ....would we get more if we had a 350 with all the same combo?? ...ahh,I dont care ...I like my 327's :P

OddRodder 02-07-2005 05:08 PM

O.K.! Your combination should make between 1.1 and 1.2 H.P. per cubic inch. Try to get as close to 4000 stall in a GOOD converter as you can afford (get a big trans, cooler as well)! Run a rear gear in the range of 4.10 to 4.30 and try to keep the car as light as possible!! Let Her Rip!!!!:D

But a nice 700 dbl.pumper!!!

I swear that I didn't see your post before I wrote this, Firestone!!

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