Speed-Talk is running on www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Stock Eliminator Manifold Question.......

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Post Reply
StockerFan
New Member
New Member
Posts: 28
Joined: Fri Apr 11, 2008 1:01 pm
Location: Southern Missouri

Stock Eliminator Manifold Question.......

Post by StockerFan »

I've always been a big fan of class racing and finally decided to jump into the mix. I built/assembled the engine on my own, and am very proud of how it runs. Problem is, I'm dependent on what mfg reps say or what I pick up at the track. So the learning curve will be slow and many theories, I'm guessing, wont pan out.

Anyway, I have been researching the intake manifold issue. Will a larger intake produce more power or torque with the minimal lift we have? My cam is .399 and revs very nicely. The more rpms I turn, the faster it runs. So far, Ive only been brave enough to take it to 7600, due to my shallow valve clearance. After the shift, it drops back to 5500, then pulls right back up again.

Any help is appreciated, I have any of the details you may need, except for dyno info. No respected ones are anywhere close to me......

What do you guys think?
NHRA Stock/Super Stock Fan
User avatar
nhrastocker
Expert
Expert
Posts: 714
Joined: Mon Jan 14, 2008 12:21 pm
Location: Arizona

Post by nhrastocker »

What engine and/or combination are you running?
StockerFan
New Member
New Member
Posts: 28
Joined: Fri Apr 11, 2008 1:01 pm
Location: Southern Missouri

Post by StockerFan »

I'm running the 283/220 pg combo. 3140 lbs, L/SA. 5.86 rear gear. Any thoughts on the intake manifold? Would it be better to use the alternate intake, which is the 327/300 intake? or is it too big?

Any ideas or thoughts?

Wade O!
NHRA Stock/Super Stock Fan
User avatar
nhrastocker
Expert
Expert
Posts: 714
Joined: Mon Jan 14, 2008 12:21 pm
Location: Arizona

Post by nhrastocker »

StockerFan wrote:I'm running the 283/220 pg combo. 3140 lbs, L/SA. 5.86 rear gear. Any thoughts on the intake manifold? Would it be better to use the alternate intake, which is the 327/300 intake? or is it too big?

Any ideas or thoughts?

Wade O!
Yes, use the alternate intake manifold. The guys that are running fast with that 283 combination, are running the allowed 327 intake.
wwmtlineman
Member
Member
Posts: 80
Joined: Thu Mar 19, 2015 6:43 pm
Location:

Re: Stock Eliminator Manifold Question.......

Post by wwmtlineman »

Buy a good drag race carburetor and check into stagger jetting, there's power there. Longer runners get jetted larger, shorter runners get less jet. Ring seal is everything plus a trick set of heads. Look into classracer.com also
novafornow
HotPass
HotPass
Posts: 98
Joined: Mon Feb 04, 2019 2:23 pm
Location: california

Re: Stock Eliminator Manifold Question.......

Post by novafornow »

No one is mentioning the fall back? I feel you need converter help, pronto! It seems a 7" may be needed, but I am not a stocker genius.
Jeff Lee
HotPass
HotPass
Posts: 357
Joined: Sun Jun 26, 2011 1:20 am
Location: Anthem / Phoenix Arizona

Re: Stock Eliminator Manifold Question.......

Post by Jeff Lee »

That incorrectly placed in the books 327 intake on a 283 was only worth about a two-tenth ET reduction. That’s if you take a 327 intake off a junk engine.
Coming Soon! NHRA SS/G
1970 AMX
390 4-speed
Advanced Clutches
Red Line Racing Cams
Walter R. Malik
Guru
Guru
Posts: 4930
Joined: Tue Jul 24, 2012 11:15 am
Location: Roseville, Michigan (just north of Detroit)
Contact:

Re: Stock Eliminator Manifold Question.......

Post by Walter R. Malik »

Jeff Lee wrote: Sat Sep 12, 2020 2:16 am That incorrectly placed in the books 327 intake on a 283 was only worth about a two-tenth ET reduction. That’s if you take a 327 intake off a junk engine.
TWO tenths ... in a Super Stock combination with just an intake manifold change???

WOW ... that is a "no brainer".
http://www.rmcompetition.com
Specialty engine building at its finest.
1972ho
Expert
Expert
Posts: 834
Joined: Thu Nov 21, 2013 12:52 am
Location:

Re: Stock Eliminator Manifold Question.......

Post by 1972ho »

https://www.castheads.com/ Just get yourself one these and forget about it.
pdq67
Guru
Guru
Posts: 9788
Joined: Thu Mar 04, 2010 8:05 pm
Location:

Re: Stock Eliminator Manifold Question.......

Post by pdq67 »

300hp/327 CI 4-barrel intake/?

Is that the one year AFB intake.

I have one out in the garage I got from a boneyard years ago only because I noticed that it fit the AFB carb. (The four holes are bigger than any I had seen is all).

Never knew if it was any good or not, but still kept it.

pdq67
tenxal
Expert
Expert
Posts: 733
Joined: Sun Nov 17, 2013 8:48 pm
Location:

Re: Stock Eliminator Manifold Question.......

Post by tenxal »

pdq67 wrote: Mon Sep 14, 2020 11:07 am 300hp/327 CI 4-barrel intake/? Is that that the one year AFB intake?pdq67
No. It's the '65 327-250 4GC intake. The AFB was used on quite a few 327's through the years...not just a single year.

Like many things in Stock, NHRA should have never allowed that one as a replacement intake. But that list is long for lots of makes: FE Ford oil pans and intakes, '62-'67 Nova 283-327 oil pans, 426 Hemi 'NASCAR' single four engines, etc.
novadude
Guru
Guru
Posts: 1393
Joined: Thu Oct 11, 2007 3:24 pm
Location: Shippensburg, PA

Re: Stock Eliminator Manifold Question.......

Post by novadude »

tenxal wrote: Mon Sep 14, 2020 12:58 pm

Like many things in Stock, NHRA should have never allowed that one as a replacement intake. But that list is long for lots of makes: FE Ford oil pans and intakes, '62-'67 Nova 283-327 oil pans, 426 Hemi 'NASCAR' single four engines, etc.
What's the deal with 62-67 Nova oil pans? Is the stock front sump an advantage or disadvantage?
tenxal
Expert
Expert
Posts: 733
Joined: Sun Nov 17, 2013 8:48 pm
Location:

Re: Stock Eliminator Manifold Question.......

Post by tenxal »

novadude wrote: Tue Sep 15, 2020 8:56 amWhat's the deal with 62-67 Nova oil pans? Is the stock front sump an advantage or disadvantage?
Here's the Milodon rear sump pan thats accepted as a replacement for the early Chevy II front sump pan:

Image

And this is the accepted replacement pan for the FE Fords (390, 427, 428 in all chassis):

Image

Now, you can do any sort of internal mods you want. I'm not against opening up the oil pan rule...matter of fact, I'm all for it. But if you're going to allow it for a couple of makes, it should be fair and opened up for everyone. This is another common sense, easily implemented rule that can actually save money in the long run, plus open up another area for experimentation.
1972ho
Expert
Expert
Posts: 834
Joined: Thu Nov 21, 2013 12:52 am
Location:

Re: Stock Eliminator Manifold Question.......

Post by 1972ho »

The F.E. Intake manifold is just the copy of the 427 f.e that’s allowed on a 428 Cj and it was approved 30 years ago out of ford Motorsports catalog.
Post Reply