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  Mustangsandmore Forum Archive
  '69 to '73 -- The Musclecar Mustang
  Aftermarket Intake,,,Did I mess up???

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Author Topic:   Aftermarket Intake,,,Did I mess up???
6T9 Sportroof
Journeyman

Posts: 78
From: Richmond,Ky,USA
Registered: Jan 2003

posted 10-26-2006 07:46 PM     Click Here to See the Profile for 6T9 Sportroof        Reply w/Quote
Bought a Edelbrock Performer for my 351W and after removing the stock intake I find that I have spare bolts left from the second sets at the water passages and the Edelebrock only has one water passage where the stocker has two.

Guess the big question is,,,Would I be better off with the stocker intake and the new carb or will the Edelbrock work and not have a water passage leak where there is only the single bolt at each water passage. Really a strange design,,looks like the stock one would seal much better than the aftermarket.

Thanks

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1969 Mach 1 351W-4V
1999 F250 CC 4x4 Powerstroke

69 Sportsroof
Gearhead

Posts: 2814
From: Valley, Alabama, USA
Registered: Mar 2002

posted 10-26-2006 09:04 PM     Click Here to See the Profile for 69 Sportsroof        Reply w/Quote
What part number did you get? In everything I've seen there should be a coolant port behind the T-stat housing mount which is for the heater hose and another all the way to the right which is for the temp sending unit. There's only 2 bolts that hold the t-stat housing to the manifold.

6T9 Sportroof
Journeyman

Posts: 78
From: Richmond,Ky,USA
Registered: Jan 2003

posted 10-26-2006 09:34 PM     Click Here to See the Profile for 6T9 Sportroof        Reply w/Quote
I was looking at the heads and not the intake. After posting, I went back and looked at the factory intake and it only has the front waterjacket passage as well.

Guess what I was talking about was the intake mounting bolts, factory has 16 and the aftermarket one has 12. The heads have 2 holes at each water passage into the intake,,,I was just concerned that this could be a leak because of using only one bolt at each corner where the stock intake has 2 bolts at each corner.

Part number is 2181.

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1969 Mach 1 351W-4V
1999 F250 CC 4x4 Powerstroke

[This message has been edited by 6T9 Sportroof (edited 10-26-2006).]

69 Sportsroof
Gearhead

Posts: 2814
From: Valley, Alabama, USA
Registered: Mar 2002

posted 10-27-2006 09:14 AM     Click Here to See the Profile for 69 Sportsroof        Reply w/Quote
Most aftermarket manifolds dont have the rear water passage in them. Nothing to worry about just be sure and use gasket sealer around the rear port on both sides of the gasket. You'll be good to go.

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 10-27-2006 10:26 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by 69 Sportsroof:

Most aftermarket manifolds dont have the rear water passage in them.


Not to high-jack the thread, but I've wondered about that fact. Why isn't there a rear crossover coolant passage in most aftermarket intakes?

It seems to me that a rear coolant crossover passage would be helpful in purging air out of the coolant system & even more importantly, helpful in keeping the heat transfer equal across the cyl head front to rear - yet the issue must not be ALL THAT important, since thousands of said manifolds have been made/sold/installed and they haven't caused major problems to the buyers......

Maybe it simply a co$t-saving manufacturing step by the aftermarket to eliminate an unnecessary rear coolant crossover passage..?

Anyone with thoughts/guesses/ideas?

Ryan

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 10-27-2006 07:03 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
quote:
Originally posted by Ryan Wilke:

Maybe it simply a co$t-saving manufacturing step by the aftermarket to eliminate an unnecessary rear coolant crossover passage..?

Anyone with thoughts/guesses/ideas?

Ryan


You got it Ryan.

------------------
Alex Denysenko
Co-Administrator and Moderator

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Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 10-31-2006 08:51 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Thanks, Alex!

Ryan

buening
Gearhead

Posts: 317
From: Decatur, IL
Registered: Mar 2005

posted 11-16-2006 10:02 AM     Click Here to See the Profile for buening        Reply w/Quote
quote:
Originally posted by 6T9 Sportroof:
I was looking at the heads and not the intake. After posting, I went back and looked at the factory intake and it only has the front waterjacket passage as well.

Guess what I was talking about was the intake mounting bolts, factory has 16 and the aftermarket one has 12. The heads have 2 holes at each water passage into the intake,,,I was just concerned that this could be a leak because of using only one bolt at each corner where the stock intake has 2 bolts at each corner.

Part number is 2181.



All aftermarket 351w intakes have the same amount of bolts as a 302. The early 351w had the extra intake bolts but the 302s did not. I guess the aftermarket figured that if a 302 can go without these extra bolts then so can a 351w. My heads and original intake has the extra bolts as well. My aftermarket intake has a rear crossover and is drilled and tapped on both rear corners (as well as the front drivers corner). Its a cheapo Taiwan intake, Pro+ Typhoon or something like that. It was $170 for the full polished intake. Hey, i was on a budget LOL. It is nice having three water ports and a heater port. Helps me run electric and mechanical water temp gauges


Just letting you know that I haven't seen an aftermarket intake with the additional bolts. I use the torque sequence of the 302 from my manual. I think they quit putting those extra bolts on the 351w in '77

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1970 Grabber Blue Mach 1 H-code
1970 Fastback
2003 Torch Red Mustang

6T9 Sportroof
Journeyman

Posts: 78
From: Richmond,Ky,USA
Registered: Jan 2003

posted 11-21-2006 02:30 PM     Click Here to See the Profile for 6T9 Sportroof        Reply w/Quote
I went ahead with the install and torqued to 351W specs with no adverse problems. Happy with the upgrade, more throtle response and overall feels better by seat of pants acceleration. Next up,,,rear axle re-do with Detroit True Trac.

------------------
1969 Mach 1 351W-4V
1999 F250 CC 4x4 Powerstroke

68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 11-28-2006 08:36 AM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
As mentioned about the early intakes having 16 bolts, the later Ford ones also had only 12 bolts.

I think the change was in 75.

[This message has been edited by 68 S-code GT (edited 11-28-2006).]

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