intake manifold selection

Air_Adam

Veteran Member
Feb 7, 2004
2,927
Saskatoon, SK, Canada
GM used an intake thats basically the same as the Holley 300-36 with an air cleaner similar to the L88 unit in the '70 Z28. That intake is about as tall as it gets for dual plane SBC manifolds.
 

pdq67

BANNED
Jul 26, 2001
10,496
Columbia, MO, USA
Ditto the old 300-36 as still being one fine intake, imho!

Off idle to 7200 rpm and cammed right, she will do ever bit of it and then some.

And the old Weiand 8004 won the how may were there?, intake shootout years ago. But the 350 engine only had something like a 252 cam in it.

I'v got the article somewhere w/ my Weiand cat.

pdq67
 

flowjoe

Moderator
Staff member
Lifetime Gold Member
Feb 7, 2006
8,146
SoCal
Air_Adam said:
GM used an intake thats basically the same as the Holley 300-36 with an air cleaner similar to the L88 unit in the '70 Z28. That intake is about as tall as it gets for dual plane SBC manifolds.

Yes, that's the "110" intake I reference above (which is .18" shorter than the 1st gen Z/28 intake). This would have been equipped with a Holley and a drop base air cleaner...I know all this will fit which is why I measured mine to figure out if other intakes would exceed its heigth (which, for the record, is 4.039" at the front and 4.958" at the rear making it a carb height of 4.4985").

An Action Plus (#8120) is 3.5" and 4.5" respectively for a carb height of 4"
A Stealth Air Strike (#8501) is 4.19" and 5.27" for a height of 4.73" (the regular Stealth, #8150, is the same)

A Performer EPS (#2701) is 3.74" and 4.80" for 4.27"
A regular Performer is (#2101) is 3.5" and 4.6" for 4.05"
A Performer RPM (#7101) is 4.2" and 5.25" for 4.725"
A Performer Air Gap (#2601) is 3.72" and 4.92" for 4.32"

All these numbers are great but I was looking for real world experiences (like DEPORTU73 and the need for a scoop). What Twisted-Metal has done is exactly what I am looking to do...AC, PS, stock hood aluminum intake and headers.
 

flowjoe

Moderator
Staff member
Lifetime Gold Member
Feb 7, 2006
8,146
SoCal
pdq67 said:
flowjoe,

Please post up the height's of the old 300-36 and you will see why it is a true high-rise.

pdq67

I don't have ready access to that data, however, if it is patterned on the GM intakes (like the "472") then I can measure my loose "472".
 

Damon

Veteran Member
Nov 16, 2000
12,939
Philly area
Holley 300-36 is 4.44" front, 5.33 rear.

Slightly taller than the RPM (and RPM Air Gap, which is exactly the same height) at 4.20 front, 5.25 rear.
 




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