#1  
Old 05-25-2021, 08:50 PM
moneypit's Avatar
moneypit moneypit is offline
Senior Chief
 
Join Date: Mar 2003
Location: San Marcos, Texas
Posts: 434
Default 467 numbers.

I thought I would share the results on the new engine for my 37. Overkill in a few areas but the goal was to make 500 hp and tons of usable torque. I think it has lots of room to grow if I decide at some point to put more cam in. The converter in the 700R4 is only about a 2200 stall. I'm pretty happy with the results!

1976 455 block
Butler/Ross 467 stroker kit
HR 230/236 @ .050 510/520 lift w 1.5 rockers 112 LS
Butler Dport 87cc 310+cfm Edelbrock heads
Warrior tunnel ram with 2 1407 Edelbrock 750 carbs
Thorley 3 tube headers

I'm retiring in about 5 months so planning on some road trips in the near future!
Attached Thumbnails
Click image for larger version

Name:	IMG_20210326_210117041.jpg
Views:	418
Size:	78.7 KB
ID:	567253   Click image for larger version

Name:	IMG_20190321_114944867_HDR.jpg
Views:	316
Size:	75.3 KB
ID:	567255   Click image for larger version

Name:	IMG_20210525_185035599.jpg
Views:	521
Size:	67.5 KB
ID:	567256  

__________________
37 Pontiac Sedan 455 700r4
94 Firehawk Supercharged 5.7 LT1 6spd.
77 Grand Prix base model, 350 pontiac
97 F250 7.3 turbo diesel
85 CJ7 Laredo
65 Impala SS 396, 4 spd, A/C.
The Following User Says Thank You to moneypit For This Useful Post:
  #2  
Old 05-25-2021, 09:04 PM
grivera's Avatar
grivera grivera is offline
Ultimate Warrior
 
Join Date: Feb 2005
Location: Just south of Baltimore
Posts: 4,889
Default

Nice build- That’s gonna be a fun ride!

__________________
Will Rivera

'69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears
'69 LeMans Vert, 350, #47 heads: Non-running project
  #3  
Old 05-25-2021, 09:07 PM
HoneyHush HoneyHush is offline
Senior Member
 
Join Date: Mar 2014
Location: Florence,Ky.
Posts: 246
Default

Congratulations man....badass gangsta ride you’ve made there!! Gonna be tons of fun!!

  #4  
Old 05-25-2021, 09:10 PM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

Should be a ton of fun. Looks great! Are those cymbals for air cleaner lids?

__________________
'65 Tempest 467 3650# 11.30@120.31
  #5  
Old 05-25-2021, 09:21 PM
vertigto's Avatar
vertigto vertigto is offline
Chief Ponti-yacker
 
Join Date: Dec 2005
Posts: 774
Default

Sure looks like cymbals to me too...nice.

__________________

1970 GTO (Granada Gold) - 400 / TH400
  #6  
Old 05-25-2021, 09:26 PM
OCMDGTO's Avatar
OCMDGTO OCMDGTO is offline
Ultimate Warrior
 
Join Date: Sep 2014
Location: Ocean City Md
Posts: 1,194
Default

Nice street engine and I love the sleeper look. You're going to surprise a few people with that!

__________________
Chris D
69 GTO Liberty Blue/dark blue 467, 850 Holley, T2, Edelbrock Dport 310cfm w Ram Air manifolds, HFT 245/251D .561/.594L, T400, 9" w 3.50s 3905lbs 11.59@ 114, 1.57/ 60'
  #7  
Old 05-25-2021, 09:26 PM
steve25's Avatar
steve25 steve25 is online now
Ultimate Warrior
 
Join Date: May 2008
Location: Westchester NY
Posts: 14,631
Default

Nice build , but you have more power sitting there right now because your BSFC numbers are very much on the rich side.
You likely have another 20 peak hp and 12 more peak ft lbs of torque there !

__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!

1) 1940s 100% silver 4 cup tea server set.

Two dry rotted 14 x 10 Micky Thompson slicks.

1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.

Education is what your left with once you forget things!
  #8  
Old 05-25-2021, 09:27 PM
ponjohn's Avatar
ponjohn ponjohn is offline
Ultimate Warrior
 
Join Date: Mar 2002
Location: Connecticut
Posts: 9,530
Default

Is that the engine dyno?

A very simple upgrade would to 4 tube headers.

Great torque numbers for sure.

  #9  
Old 05-25-2021, 09:29 PM
Formulajones's Avatar
Formulajones Formulajones is offline
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,794
Default

Absolutely love the tunnel ram

__________________
2019 Pontiac Heaven class winner

https://youtu.be/XqEydRRRwqE
  #10  
Old 05-25-2021, 10:08 PM
slowbird's Avatar
slowbird slowbird is offline
Ultimate Warrior
 
Join Date: Jan 2001
Location: Montgomery, IL
Posts: 10,638
Default

Quote:
Originally Posted by steve25 View Post
Nice build , but you have more power sitting there right now because your BSFC numbers are very much on the rich side.
You likely have another 20 peak hp and 12 more peak ft lbs of torque there !
BSFC isn't a measure of rich or lean.

  #11  
Old 05-25-2021, 10:12 PM
moneypit's Avatar
moneypit moneypit is offline
Senior Chief
 
Join Date: Mar 2003
Location: San Marcos, Texas
Posts: 434
Default

Thanks! They are cymbals. The gas pedal is a early 40's Slingerland bass drum pedal.
That is the dyno sheet for that engine. four tube headers will come along in the near future.
The tunnel ram works well on the street and the cool factor is way up there although I'm sure it's not the most efficient set up.

All I was going to do was upgrade to a roller cam and then..........

__________________
37 Pontiac Sedan 455 700r4
94 Firehawk Supercharged 5.7 LT1 6spd.
77 Grand Prix base model, 350 pontiac
97 F250 7.3 turbo diesel
85 CJ7 Laredo
65 Impala SS 396, 4 spd, A/C.
  #12  
Old 05-25-2021, 10:39 PM
promptcritical promptcritical is offline
Senior Chief
 
Join Date: Apr 2014
Posts: 260
Default

Sweet build.

  #13  
Old 05-26-2021, 12:47 AM
Stan Weiss's Avatar
Stan Weiss Stan Weiss is offline
Ultimate Warrior
 
Join Date: Jul 2013
Location: Philadelphia, PA
Posts: 5,000
Default

Quote:
Originally Posted by slowbird View Post
BSFC isn't a measure of rich or lean.
X2

Stan

__________________
Stan Weiss/World Wide Enterprises
Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software
http://www.magneticlynx.com/DV
Download FREE 14 Trial IOP / Flow Software
http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php
Pontiac Pump Gas List
http://www.magneticlynx.com/carfor/pont_gas.htm
Using PMD Block and Heads List
http://www.magneticlynx.com/carfor/pont_pmd.htm
  #14  
Old 05-26-2021, 07:13 AM
Torquewar's Avatar
Torquewar Torquewar is offline
Senior Chief
 
Join Date: Mar 2011
Location: Dorchester Ont Canada
Posts: 491
Default

Gotta say love the car , has a great look. The wheel overs add to the cool factor. Must say the tunnel ram is so neat ,don’t really see those used much any more.
Nice street engine and the OD is nice . What is the compression ?

  #15  
Old 05-26-2021, 07:49 AM
moneypit's Avatar
moneypit moneypit is offline
Senior Chief
 
Join Date: Mar 2003
Location: San Marcos, Texas
Posts: 434
Default

Quote:
Originally Posted by Torquewar View Post
Gotta say love the car , has a great look. The wheel overs add to the cool factor. Must say the tunnel ram is so neat ,don’t really see those used much any more.
Nice street engine and the OD is nice . What is the compression ?
Thanks! The 52 wheel covers work well on the car. The engine is 10.1

__________________
37 Pontiac Sedan 455 700r4
94 Firehawk Supercharged 5.7 LT1 6spd.
77 Grand Prix base model, 350 pontiac
97 F250 7.3 turbo diesel
85 CJ7 Laredo
65 Impala SS 396, 4 spd, A/C.
  #16  
Old 05-26-2021, 08:44 AM
Torquewar's Avatar
Torquewar Torquewar is offline
Senior Chief
 
Join Date: Mar 2011
Location: Dorchester Ont Canada
Posts: 491
Default

Lower compression on your build is fine . I’m only at 10:3 and have a much more radical combo and I’m happy there. Street car but gets to the track.
My son is a drummer and sent him the pics of the air cleaner tops. Loved it.......
On a note congrats on future retirement... I’m a month away.....

  #17  
Old 05-26-2021, 07:09 PM
PontiacJim1959 PontiacJim1959 is offline
Suspended
 
Join Date: Dec 2019
Location: Gastonia, NC
Posts: 492
Default

Nice. I have a similar build - still in pieces. I went with worked 7K3 heads having 230 CFM's, like camshaft, and the 800CFM AVS2 carbs. What is your compression as I seemed to have missed it? I am at a little over 9.0 but may mill my heads a bit just to get closer to 9.5.

  #18  
Old 05-26-2021, 07:57 PM
moneypit's Avatar
moneypit moneypit is offline
Senior Chief
 
Join Date: Mar 2003
Location: San Marcos, Texas
Posts: 434
Default

Quote:
Originally Posted by PontiacJim1959 View Post
Nice. I have a similar build - still in pieces. I went with worked 7K3 heads having 230 CFM's, like camshaft, and the 800CFM AVS2 carbs. What is your compression as I seemed to have missed it? I am at a little over 9.0 but may mill my heads a bit just to get closer to 9.5.
Thanks Jim, my engine is 10:1 compression.

__________________
37 Pontiac Sedan 455 700r4
94 Firehawk Supercharged 5.7 LT1 6spd.
77 Grand Prix base model, 350 pontiac
97 F250 7.3 turbo diesel
85 CJ7 Laredo
65 Impala SS 396, 4 spd, A/C.
  #19  
Old 05-26-2021, 09:58 PM
PontiacJim1959 PontiacJim1959 is offline
Suspended
 
Join Date: Dec 2019
Location: Gastonia, NC
Posts: 492
Default

Quote:
Originally Posted by moneypit View Post
Thanks Jim, my engine is 10:1 compression.
Ok, sounds good.

Do you have the dyno numbers for idle on up? Was curious as to the HP/TQ numbers since the tunnel ram is often looked down on as a streetable piece at these lower RPM's.

Again, most will say the tunnel ram is for mid-to-upper RPM's but from your dyno sheet, this does not seem to be the case. It seems to peak at a perfect RPM for a street engine.

I am going more for the period look with my set-up, using velocity stacks topped with a Hilborn style scoop.

Another thing I see. You have the finned valve covers. Make sure you have breathers. I see the oil fill cap, and assume a breather on the other side? I also have finned valve covers and will be using the Moon add-on breathers ala the old school look. I mocked them up on an engine I have sitting and will mount the breathers permanent when I have the tunnel ram in place on the engine.
Attached Thumbnails
Click image for larger version

Name:	02  Fuel Regulator.JPG
Views:	144
Size:	159.3 KB
ID:	567322   Click image for larger version

Name:	01  455 Valve Covers.jpg
Views:	127
Size:	90.6 KB
ID:	567323  

  #20  
Old 05-26-2021, 10:24 PM
Formulajones's Avatar
Formulajones Formulajones is offline
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,794
Default

Tunnel rams are actually better than people give them credit for. The long runners produce good torque through the rpm range and they'll make hp. I've never seen an engine yet that didn't like a tunnel ram when setup properly.

2 biggest issues with them is packaging of course, and cold starts can be a pain, but if you're good at tuning the carbs you're using they can be made to drive pretty decent.

Besides, nothing looks cooler on classic muscle than a period correct tunnel ram

__________________
2019 Pontiac Heaven class winner

https://youtu.be/XqEydRRRwqE
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:49 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017