Small Block & Big Block Chevy Specific - power estimations...

hello

i was just wondering what you guys think the hp on my sbc 406 would be, ballpark.

its a 400, .030 over, which, oviously is a 406. its got 10-1 compression flattops. the cam is 244 @.050" w/ .501" of lift and a 108* lsa. stock heads, holly dominator intake and a holly 750 double pumper, and some shorty headers.

i thought like 300-350 or so hp, but im not shure at all. :confused:

thanks

thats probably not too far off....

thanks :thumb:

:chug: i'll drink one to that

its going in a '30 model a, by the way

and where in MO are you at, im a kc boy myself

what do you mean by stock heads?

yeah, stock heads could mean 461 castings or 882 castings, so a little clarification might help. Either way, the 300-350 could be a good guess, but heads will make a big difference.

Derek

sorry, im not to shure in the heads. its a '74 2-bolt out of a truck though.
i will look tomorrow, though.

thanks :thumb:

:chug: i'll drink one to that

its going in a '30 model a, by the way

and where in MO are you at, im a kc boy myself

I'm down by Springfield now, but I grew up in the Johnson Co. area.

I didn't know what value to put in for the intake port cc's - just took a educated guess. Also, I put the CR at 9.5 - thats getting close to the limit for iron heads.

http://www.hotrodink.com/Images/data/546/4helgabeast1.jpg

http://www.hotrodink.com/Images/data/546/4helgabeast2.jpg

I'd say the 392 hp is a little off. Hell I made 327 rwhp with a 350 with aftermarket aluminum heads, a 10:1 compression and 518/536 lift cam with a Victor Jr. and 650 dp Holley.

Heads are the main thing: what kind are they?

hello

i was just wondering what you guys think the hp on my sbc 406 would be, ballpark.

its a 400, .030 over, which, oviously is a 406. its got 10-1 compression flattops. the cam is 244 @.050" w/ .501" of lift and a 108* lsa. stock heads, holly dominator intake and a holly 750 double pumper, and some shorty headers.

i thought like 300-350 or so hp, but im not shure at all. :confused:

thanks

we had a bracket nova with a simler combo except we used a cam crane ground 35 years ago called a saterday night special can find it in jegs summit 100 bucks its 518 / 536 250 260 on a 106 cl footbraked real well we first had the 73 vette turbo heads they called them car went 10:90 than we put on iron eagle 215 - 64 cc and car picked up to 10 50 in the cool weather and 60s in the heat has a 456 gear w/ a 176 in a glide sweet combo but it did not like it when it got hot we cracked 3 stock blocks 2 bolts lasted longer than the 4 bolts before we went away from that combo lots of torque and tire spin if track is not their jz

that motor with a 70's truck head will be lucky to make 300hp at the flywheel. and as for running 10.90's in a nova with a iron chevy head then 10.50's with an iron eagle using an old technology flat tappet how much did the car weigh 2500lbs or less with driver because if you say heavier there is just no way.

that motor with a 70's truck head will be lucky to make 300hp at the flywheel. and as for running 10.90's in a nova with a iron chevy head then 10.50's with an iron eagle using an old technology flat tappet how much did the car weigh 2500lbs or less with driver because if you say heavier there is just no way.


i have 600 time tickets with this combo and car weight was 2950 on return road w/driver in it 4.155 LW flat piston moly rings 090 pins stock 400 crank 5.7 rod fluid damper crane 518 536 cam solid heads up on timing iron eagle heads 215cc 64 cc chamber port and gasket matched only Hooker super comp 1 7/8 into 3 1/2 w/ bullets and 12" turnout victor jr intake 850 dp 4 corner msd dist and a 6 AL / blaster msd wires Z 28 type oil pump 6 qt pan w/ deflectors and scraper 40 deg of engine timing 2 speed glide 1"82 gear set ATI 4500 convertor 456 12 bolt 10 1/2 15 slicks shifting at 6000 traps was up to weather 5800 / 6400 maybe out of 600 passes with this combo car avarage was high 10;50s --- at englishtown on cool september morn it went 10;44 127 but thas was a fluke -- super weather -- go into any no bullsh$t motor enging shop they will confirm not the place you been going thousands of this combo have been and still are being raced look around in heavy dude its what is being raced for the past 20 years i have 2 cars with drivers over many years i do this for a hobby as well as a bussness draw and we at times have made some money not lately tho jz

and you are full of it.

and you are full of it.


Yea you must be very proud of yourself being in a 7 second 1/8 mile club

i'am so happy for you

#1 that 1/4 jackass. in a 3550lb all steel streetcar
#2 for a 2950 car to run 127mph it requires roughly 570hp which a small solid cam in an iron headed flattop 406 is not going to do. so quit spewing bs and getting this guys hopes up.

#1 that 1/4 jackass. in a 3550lb all steel streetcar
#2 for a 2950 car to run 127mph it requires roughly 570hp which a small solid cam in an iron headed flattop 406 is not going to do. so quit spewing bs and getting this guys hopes up.


wow i am impressed your desk top dyno is off dude its 540 in real life but you wouldent know that
and next time you elbo up to the guys at Mickie deeees and brag about your 1200 HP on pump gas V6 or what ever it is you are bench racing this week on your desk top dyno you dont have to say hi for me i will winning money at the track OBTW island dragway in jersey has another bring big power for money ( called Carolina Nationals Slam ) grudge racing no time all day Aug 13 06 11 am to 6 pm sky is the limit match race name the amount NO wepons jersey state troopers on hand it gets pushey at times one pass for all the marbles i am sure you can do it 7 second wantabeeeeeeeeeeeeee you know so much bring it ON DUDE jz

no desktop dyno here buddy just facts and known combinations. and yep wannabe is just what i am maybe someday i can run 11's in real life.

ok, finally took off the vlve covers, they are 882 castings. just thought id put that on here. thanks for all the help so far!!!

882 castings are not the best, but also not the worst. If they are not ported the 300-350 hp figure is about all you'll see IMHO.

Derek

good enough for me.its not gonna be a street racer or anything, as said earlier, its going in a model a... :drive: with only 255 tires. might have a traction prob :bang: