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Big mouth heads #2707865
10/17/19 08:46 PM
10/17/19 08:46 PM
Joined: Aug 2006
Posts: 99
South Dakota
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wireweld Offline OP
member
wireweld  Offline OP
member
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Joined: Aug 2006
Posts: 99
South Dakota
Has anyone used these heads or flowed them to see if they are the real deal.

Re: Big mouth heads [Re: wireweld] #2707900
10/18/19 01:28 AM
10/18/19 01:28 AM
Joined: Mar 2019
Posts: 19
Germany
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stickman60 Offline
member
stickman60  Offline
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Joined: Mar 2019
Posts: 19
Germany
Go over to FABO... there were one or two builds with them. Results were mixed IIRC.

Re: Big mouth heads [Re: stickman60] #2707939
10/18/19 07:48 AM
10/18/19 07:48 AM
Joined: Aug 2006
Posts: 99
South Dakota
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wireweld Offline OP
member
wireweld  Offline OP
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Joined: Aug 2006
Posts: 99
South Dakota
I am on Fabo. Wanted to see if anyone here had used them or knew anything about them.

Re: Big mouth heads [Re: wireweld] #2707946
10/18/19 08:17 AM
10/18/19 08:17 AM
Joined: Feb 2005
Posts: 14,852
PA.
pittsburghracer Offline
"Little"John
pittsburghracer  Offline
"Little"John

Joined: Feb 2005
Posts: 14,852
PA.
All I can add is add is what I found. On my best set of Edelbrock heads I porteded I tubed the pushrod holes and took every bit of available area and they flow slightly over 315cfm. The air speed at the pinch was in the range I like to see. I matched a port on a new set of heads and then I put aluminum round rod in the hole and had Harlan Sharp make me a set of rockers .350 offset so I can open the pinch even more. Now this port was already flowing 315 cfm and when I opened up the pinch .200 more I gained nothing. There are other things I want to try in the port but I kinda lost interest in that project. Hopefully this winter I will drag it out again


1970 Duster
Edelbrock headed 408
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Big mouth heads [Re: pittsburghracer] #2707955
10/18/19 08:31 AM
10/18/19 08:31 AM
Joined: Jan 2003
Posts: 12,354
So. Burlington, Vt.
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fast68plymouth Offline
I Live Here
fast68plymouth  Offline
I Live Here
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Joined: Jan 2003
Posts: 12,354
So. Burlington, Vt.
I had a set of the next version down from that here for freshening a couple years ago.
The ones that are shown on the Hughes site as flowing something like 313.

They didn’t flow that on my bench, and they didn’t sound that good on the bench either.

No experience with the actual “big mouth” though.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads

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