351w Head Quandry
02-12-2007, 05:59 PM
#12
5th Gear Member
Join Date: Nov 2006
Location: North Fulton, GA
Posts: 2,287
RE: 351w Head Quandry
ORIGINAL: my77stang
i wonder what your numbers would have been at the flywheel with a RPM or airgap intake and maybe a 625 or 650 carb.......
i wonder what your numbers would have been at the flywheel with a RPM or airgap intake and maybe a 625 or 650 carb.......
In the lightweight '65 GT, it was a nice runner back in the days before everybody and their mother sold high performance aluminum heads.
02-12-2007, 07:21 PM
#14
6th Gear Member
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
RE: 351w Head Quandry
whats wrong with tranny overkill? stonger is always better.
i know edelbrock didnt make the airgaps back then but i would have thought they made the RPM's (they are loosely based on the old shelby / cobra SBF intakes)
i know edelbrock didnt make the airgaps back then but i would have thought they made the RPM's (they are loosely based on the old shelby / cobra SBF intakes)
02-12-2007, 07:24 PM
#15
5th Gear Member
Join Date: Oct 2006
Location: west chester
Posts: 3,305
RE: 351w Head Quandry
not always when ur losing more power then needed to make the car go. the c4 ftw
ORIGINAL: my77stang
whats wrong with tranny overkill? stonger is always better.
i know edelbrock didnt make the airgaps back then but i would have thought they made the RPM's (they are loosely based on the old shelby / cobra SBF intakes)
whats wrong with tranny overkill? stonger is always better.
i know edelbrock didnt make the airgaps back then but i would have thought they made the RPM's (they are loosely based on the old shelby / cobra SBF intakes)
02-12-2007, 07:26 PM
#16
6th Gear Member
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
RE: 351w Head Quandry
i'd love to see dyno comparisons with HP losses C4 vs. C6 - im sure there may be some but i dunno how much.
a built C4 can be stronger than a C6, but in stock trim a C6 is pretty damn stout
a built C4 can be stronger than a C6, but in stock trim a C6 is pretty damn stout
02-12-2007, 10:44 PM
#18
Thread Starter
Join Date: Feb 2007
Location:
Posts: 16
RE: 351w Head Quandry
gothand, what do you think the true HP was at the flywhel on your 302? Seems like your reading should have been higher even atthe wheel with the 270 cam. I am going with an Air-Gap and a 650 carb with the stock heads, or a 750 if I go with the big valve set.
As an interesting sideline too on my project, the motor was raced at the local strip here. It was pretty much bone stock except for slicks. No suspesion mods, ladders bars or anything. When I tore it down it had a Comp Cams 303 with pretty high domed pistons and stock valve train. Removed the glove box this weekend and found old time slips from the runs this car made in 1984. Best wast 12.25 at 117 MPH but averaged around 12.5 110 mostly.
As an interesting sideline too on my project, the motor was raced at the local strip here. It was pretty much bone stock except for slicks. No suspesion mods, ladders bars or anything. When I tore it down it had a Comp Cams 303 with pretty high domed pistons and stock valve train. Removed the glove box this weekend and found old time slips from the runs this car made in 1984. Best wast 12.25 at 117 MPH but averaged around 12.5 110 mostly.