ChevelleForum.net

Go Back   Chevrolet Chevelle Forums > Chevrolet Chevelle Garage > Chevelle Engine & Trans

Reply
 
Thread Tools Display Modes
  #1  
Old 09-18-2017, 02:30 PM
colpac colpac is offline
Junior Member
 
Join Date: Feb 2017
Posts: 21
Default 1971 Chevelle 454 cowl induction hood w/o flapper

Bought a non stock 71 chevelle with a 454 motor and has a cowl hood with no flapper but has the air cleaner open top with rubber for the induction. Does it get air thru hood, looks like just pushed up against hood. Thanks
Reply With Quote
  #2  
Old 09-18-2017, 07:03 PM
Hank70SS's Avatar
Hank70SS Hank70SS is offline
Moderator
 
Join Date: Dec 2009
Location: Brighton, MI
Posts: 4,466
Default

Mine has the flapper so can't say for sure. Does it have a snorkel coming out the side? Does the hood have an opening going towards the windshield? A picture of the hood would help. Sorry I can't help more.
__________________
Hank

70 Chevelle SS396(454), M20, 3.73
My Chevelle
Reply With Quote
  #3  
Old 09-19-2017, 07:12 AM
carpoor carpoor is offline
Senior Member
 
Join Date: Dec 2011
Location: Floriduh
Posts: 2,192
Default

Cowl Induction hoods had the flapper. The hoods without the flapper are "domed" hoods. To make a domed hood function, you would have build an air pan.
Attached Thumbnails
Click image for larger version

Name:	th-3.jpg
Views:	36
Size:	13.9 KB
ID:	4198  
__________________
1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu factory L48/M20/12 bolt 3.31 posi
2001 Silverado RCSS LQ4/80E/4.11 posi. Cam'd & bolt ons
Reply With Quote
  #4  
Old 09-19-2017, 08:53 AM
colpac colpac is offline
Junior Member
 
Join Date: Feb 2017
Posts: 21
Default

OK, thanks. It has a scoop in the back and a screen on it but I could not figure or see any way for the air to get into the breather.
Reply With Quote
  #5  
Old 09-19-2017, 09:10 AM
colpac colpac is offline
Junior Member
 
Join Date: Feb 2017
Posts: 21
Default

Got some shots but does not show much.
Attached Thumbnails
Click image for larger version

Name:	100_0263.jpg
Views:	41
Size:	76.7 KB
ID:	4199   Click image for larger version

Name:	100_0265.jpg
Views:	42
Size:	64.7 KB
ID:	4200   Click image for larger version

Name:	100_0264.jpg
Views:	40
Size:	60.6 KB
ID:	4201  
Reply With Quote
  #6  
Old 09-19-2017, 05:38 PM
Hank70SS's Avatar
Hank70SS Hank70SS is offline
Moderator
 
Join Date: Dec 2009
Location: Brighton, MI
Posts: 4,466
Default

Well, hard to see. Does the circle in the dome of the hood open to the back near the windshield? The air cleaner assembly is definitely the same as used with a cowl hood and flapper.

Is that real L78 or L89 386?
__________________
Hank

70 Chevelle SS396(454), M20, 3.73
My Chevelle

Last edited by Hank70SS; 09-19-2017 at 05:41 PM.
Reply With Quote
  #7  
Old 09-19-2017, 07:37 PM
carpoor carpoor is offline
Senior Member
 
Join Date: Dec 2011
Location: Floriduh
Posts: 2,192
Default

Hank, I think you need to borrow Tony's glasses, the sticker on the air cleaner says 454.
__________________
1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu factory L48/M20/12 bolt 3.31 posi
2001 Silverado RCSS LQ4/80E/4.11 posi. Cam'd & bolt ons
Reply With Quote
  #8  
Old 09-20-2017, 08:01 AM
Hank70SS's Avatar
Hank70SS Hank70SS is offline
Moderator
 
Join Date: Dec 2009
Location: Brighton, MI
Posts: 4,466
Default

Quote:
Originally Posted by carpoor View Post
Hank, I think you need to borrow Tony's glasses, the sticker on the air cleaner says 454.
Doh! All I saw was 375HP and was thinking L78, L89 396.
__________________
Hank

70 Chevelle SS396(454), M20, 3.73
My Chevelle
Reply With Quote
  #9  
Old 09-21-2017, 01:44 PM
colpac colpac is offline
Junior Member
 
Join Date: Feb 2017
Posts: 21
Default

It does have a opening to the rear of hood but I can not see where the air would get in the breather unless it does not touch the hood.
Reply With Quote
  #10  
Old 09-22-2017, 07:53 AM
carpoor carpoor is offline
Senior Member
 
Join Date: Dec 2011
Location: Floriduh
Posts: 2,192
Default

The domed hood cars had a closed element air cleaner in 71'- 72'. I'll have look at the domed hood I have again. But, basically, if I recall correctly... you have to remove the screen and baffle from the rear of the hood.

I have one each, a domed hood and cowl flapper good, both original GM. I can try to slide by my folks place today and compare. (Both are off the cars)
__________________
1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu factory L48/M20/12 bolt 3.31 posi
2001 Silverado RCSS LQ4/80E/4.11 posi. Cam'd & bolt ons
Reply With Quote
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 -5. The time now is 05:50 AM.



Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Audiokarma.org