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455 block! Help!

  
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455 block! Help!

 
Seol21 Seol21
New User | Posts: 29 | Joined: 06/11
Posted: 01/20/13
11:51 PM

Hi fellas, i just picked up a 67 firebird and already started on the body work. i decided i want to go with a 455 on this thing since i already have a 400 in my 64 lemans. What i want to know is what block to get. i want to build it for series horsepower. Any after market blocks in particular or a certain 455 block i want? Im not exactly sure on how im going to build it but i need to start with block and go from there lol.
thanks  

69redbird 69redbird
Enthusiast | Posts: 259 | Joined: 04/10
Posted: 01/23/13
09:46 PM

It's all about the $
How much you want to spend?
How fast you want to go?
How quick you want to get up to how fast you want to go?
Do you want to drive it as a street car that feels like your rear tires are on a frozen lake?
Do you want to take it to the drags and bracket race it?
Do you want to take it to SCCA autocross meets?

Here is what I did ------
69 Firebird
3300 lbs. with 1/2 tank and my fat a** in the seat
3.55:1 9" Currie, trac lock, 200R4 built
Hotchkiss, Global West, Bilstein shocks all over
1971 455 +0.030 over "YC" casting #485428 factory 4 bolt mains
Stock crank
Tomahawk 4340 A-beam rods 6.625"(bushed)(683gm)
Icon IC888-30 pistons 5.5cc(529gm/163gm)
Block decked & squared (0.001-0.0005 nominal)
Cam: Lunati VooDoo #40510511
(ADV 278/285)(242/249@.050)(.556 lift)(112 LSA 106 ICL)
Howards #91417 solid rollers (0.015 lash)
Heads: 4X-3H (250CFM @ .500)98.6cc 2.11/1.77 Ferrea valves
full redo on heads valve job, hardened exh seats, int seats, springs, yadda, yadda
Performer RPM intake
Doug's headers 1.75"/3" collectors
Professional Products Powerjection III fuel injection
Balance to a gnat's a**

Now I have a bottle! (NOS cheater system)(100 to 250 HP)
I'm starting with 100HP
0.028 fuel jet @50psi 93+ octane
0.047 NOS jet @900psi nominal
+ fire jacket, driveshaft loop, MT 10"x26" DOT slicks.....
Yes I have a severe adrenalin addiction

We'll see what it does on Saturday (3/26/2013 in Tucson, AZ) !

So is that where you want to go?
Hop on in the water's fine!

All I want for Christmas is:
An IA-II block Cool
&
A set of Eddy Alum heads 87cc ported to 315 cfm Cool

Tongue  
I know, it's not red
69redbird~~
How may I serve you?
Boiled, Deep Fried, or Flambe'?

barnett468 barnett468
User | Posts: 223 | Joined: 12/12
Posted: 01/24/13
12:53 AM

hello seol21

check this out butler performance

http://www.butlerperformance.com/FeaturedEngine/ultimateStreet.htm

69 redbird, autocross, good question, ever seen anyone beat killer mary pozzi?

69 redbird what did your motor cost minus the nitrous and what's your peak RPM, with and without nitrous, of course only when safely tested on a private off public highway road or track?

SEOL21 - very cool project and nice post from 69redbird. everyone can best help you if you are much more specific on what you mean by serious hp, 500, 600 or 700 etc. my questions may see dry but any answers will help. i don't know what you know so please don't be put off by my questions. a couple are similar or identical to 69redbird above so just disregard mine that are.

0. 91 octane pump gas or racing fuel or half of each?

1. how much money are you willing to spend on the motor. this will determine very closely the maximum amount of RELIABLE hp you can expect?

2. how much are you willing to spend on trans diff and suspension? you also need to spend a ton on these items to support high hp?

3. what are your performance expectations and driving style. nice moderate street performer with decent idle or 1/4 mile 10 second drag car with license plates. mant people ask for more than they really want?

4. do you care if you get a concussion from a serious rough idle?  

5.do you want to run a mini blower, vortec suoercharger, efi or nitrous? nitrous is the cheapest and easiest way to get decent idle quality with dragster type performance. plus you can sedate your kids with it too!

6. do you care if you have a hole in your hood, never know?

7. do you want to stroke the motor to 468 or whatever?

8. bottom end middle or top end hp? 5k 6k 7k peak rpm? can't have em all

9. tubbed wheel wells with street slicks?

10. another useless guess, you won't need an aftermarket block untill you exceed 650 hp. others will have a more educated opinion here. aftermarket pre machined block from bitler performance around $3200 cast, $5000 aluminum, cost to cnc machine your existing block $500.

10. MOTOR COST - 455 stock block, aluminum heads, roller cam with carburetor. 7k for 550 hp. this is a random toss, others will know exactly the cost. if you scrounge a bit for yourself like buy parts from summit instead of from your engine builder if you need one etc. see Dawna's build post by tuffnuff. rowsley and my71 also have high hp cars as well as others. they should be here soon.


PS

Do you have a neck brace and a bible?  

Pontiac_Iron Pontiac_Iron
User | Posts: 71 | Joined: 12/12
Posted: 01/24/13
03:42 AM

@ Redbird

3300lbs????
Dude.. I have a fiberglass hood and dont come close to that.. car was almost 3900lbs on a scale before I shedded some weight...
What did you do differently than I on the body or diet for yours?
Curious???
++1 Barnett and Redbird on the info.
Again know what the car is built for and desired results Seol is the key to you knowing whatcha doin?
Big picture..break it down for us.
nice body year 1st gen birds..
My two cents Get a Torker manifold.. not the Torker II the original.. start scowering swap meets.
Like Redbirds choice of cam. but again.. without knowing if the car is street street/strip or strip... kinda hard to throw out more than blocks.. plus buying older used blocks like I did 20yrs ago is risky now.. either theyve been sitting for a reason or they are compromised.
food for thought

Looking to read more from you,  
Viagra and Torque are one in the same they both get you up!

barneyformula barneyformula
Addict | Posts: 3306 | Joined: 01/07
Posted: 01/24/13
04:40 AM

All very good questions guys, too often we get vague requestes for engine build info and it's hard to guess what the new member really wants/needs. I can offer my personal experience for the 400 in Dawna's Dream Buld mentioned above. Tuff started that post for me when we collaborated on the build, it ended up being a 406 based on a 74 400 block, line bored and bored .030" over with a balanced rotating assembly from Butler's using a fully prepped and nitrided stock crank, H-beam rods and KB ICON forged dished pistons. The heads were their Edelbrock d-ports, 72cc chambers and ported to 300cfm. Intake and carb for now are a Performer RPM and 750 Performer, Hedman Hedders (1.75 x3") and Flowmaster 2.5 American Thunder exhaust. Cam is Lunati's 60903 hyd/flat tappet. I've got about $7500 in this engine alone but I've yet to run it because in the process of building it for my 79 Formula, a whole new car (70 Tempest) appeared. Hopefully the Tempest will be finished it's rotiserie ride and be back together this summer so I can offer some performance numbers but for now, the Virtual Dyno simulation shows 470+hp and 500ft.lbs of torque. With 3.55 gears and a 2500 stall converter, I expect low 12's on street tires, any faster and the track will demand a rollcage which I won't do to my street car!
Steve  
A little help... 'cause we don't all have to learn the hard way!

Pontiac_Iron Pontiac_Iron
User | Posts: 71 | Joined: 12/12
Posted: 01/24/13
05:48 AM

What simulation are you running?  
Viagra and Torque are one in the same they both get you up!

barneyformula barneyformula
Addict | Posts: 3306 | Joined: 01/07
Posted: 01/24/13
10:54 AM

Here's the charts and you can see the program name at the top. There are a few minor differences such as the 3" exhaust instead of the 2.5" I'm using and the X vs H crossover.
Cool Barney400buildsheet
Barney406  
A little help... 'cause we don't all have to learn the hard way!

Seol21 Seol21
New User | Posts: 29 | Joined: 06/11
Posted: 08/09/13
12:20 AM

Awesome fellas. thanks for the posts. I haven't been on in a while but im getting ready to start on this project. I guess I should have been more specific lol. But I decided I want the car to be street driveable but would like to take it out to the track occasionally and be in the 11's. money isn't a big issue because I am not in a big hurry to get it done. so Ill go part by part. block is the first thing.  

70bird 70bird
Guru | Posts: 1064 | Joined: 02/13
Posted: 08/09/13
01:26 AM

Well, the free online wallace et calculator says that with perfect weather at sea level on Sunday after you get out of church it will take 519.82 hp to hurl a 4000 lb car including gas and driver down the 1/4 in 11.5 seconds @ 116.31 mph.

The engine build in Barneyformula's post will do it in 11.81 @ 113.45 mph. If that's fast enough simply do what he did.

maybe:

454 ci
4 bolt mains
eddy pocket ported rpm heads
10.5:1 static compression
comp xe284h cam or hyd roller or similar lunati
eddy rpm intake port matched
eagle or oem forged rods
scorpion endurance rockers
holley dominator 850 annular type carb.
3.55-373 gears with 2800 stall

68redbrd and rowsley do a lot of drag too they and others can also help.  

Opontee Opontee
Guru | Posts: 1422 | Joined: 07/09
Posted: 08/09/13
04:44 AM

468 Pontiac .040 stroke .035 over
Ohio Crank and rods (6.800)4340
SRP pistons 10.5-1
Edelbrock 87 cc round exhaust
Bullet solid roller .643/.618 296/306
950 HP Holley
Trans Specialty 9" 3500 stall
TH 400
3.90 10 Bolt narrowed
Moser spool and axles
Weld drag lites
M/T sportsman front 11.5x28 rear slicks
Competition Engineering Ladder Link ladder bars
QA1 coil over rear shock-double adjustable
JW Bellhousing

tips the scales at 3200 with me in it. All bolt on fiberglass front end.

Runs 6.60's in the 1/8 and 10.60's im the 1/4.




06 12 2010 24 L1 Zps6d7edd95  
OponteeOpontee
Anna Mae quit. Opontee

joeq joeq
New User | Posts: 22 | Joined: 10/10
Posted: 08/09/13
02:23 PM

2 phrases I've always envied. "An 11 sec. street car", and "money is no object".  
(84 T/A 301T T-5)