351W Combo? Look Strong?
Im new here and wasnt sure if i should post here or not.
I have a 1969 mach 1 here is my combo i just built how does it sound?
69 block 40 over
10.1 compression
dart pro 1 195cc 2.02intake/1.6exhasut flow 285@600intake 185@600exh
roller rockers 1.6
comp extreme enegry XE294H flat tappet
@50 250in/256exh
advertised duration 294int/306exh
lift 554int/558exh
victor jr intake
700holley Dp
electric water pump drive
msd 6a
9 qrt oil pan with windage tray and baffles and crank scraper
march performance ration pulleys (just have an crank and alternator pulley)
electric fan
small headers 1 1/2 flowtechs with pypes 2.5 exhasut
all this with a c-4 with 3000 stall speed and a 9 inch with 3.89 gears
How does this sound for a street/strip. (only driven to local shows and track)
Thanks in advance[/align]
I have a 1969 mach 1 here is my combo i just built how does it sound?
69 block 40 over
10.1 compression
dart pro 1 195cc 2.02intake/1.6exhasut flow 285@600intake 185@600exh
roller rockers 1.6
comp extreme enegry XE294H flat tappet
@50 250in/256exh
advertised duration 294int/306exh
lift 554int/558exh
victor jr intake
700holley Dp
electric water pump drive
msd 6a
9 qrt oil pan with windage tray and baffles and crank scraper
march performance ration pulleys (just have an crank and alternator pulley)
electric fan
small headers 1 1/2 flowtechs with pypes 2.5 exhasut
all this with a c-4 with 3000 stall speed and a 9 inch with 3.89 gears
How does this sound for a street/strip. (only driven to local shows and track)
Thanks in advance[/align]
I might even consider a bigger carb. I've ran a750 holley on a 351W not as strong as this one, and it ran really good. Even better than the 600 I took off. Don't be afraid to move up to a 800 or 850dp if the top end seems weak.
With that combo, you'll make excellent top end power. Your effective cylinder pressures will be a little high. But with that cam nothing terrible. Except on a hot day, it should run good on pump premium.
You won't have much bottom end. It will idle well at about 1000-1200. A bigger carb may need a higher idle.
With a hydraulic cam, it won't run over 6,200. Depending on the parts you chose, maybe not even that high. I suggest Comp Cams beehive springs. That gives more stability and adds a couple hundred rpm's on the cyclotron. I'm curious why you didn't go with a mechanical cam? All the other parts should make power to 7,000 or so.
With that combo, you'll make excellent top end power. Your effective cylinder pressures will be a little high. But with that cam nothing terrible. Except on a hot day, it should run good on pump premium.
You won't have much bottom end. It will idle well at about 1000-1200. A bigger carb may need a higher idle.
With a hydraulic cam, it won't run over 6,200. Depending on the parts you chose, maybe not even that high. I suggest Comp Cams beehive springs. That gives more stability and adds a couple hundred rpm's on the cyclotron. I'm curious why you didn't go with a mechanical cam? All the other parts should make power to 7,000 or so.
We are running a similar but different setup on our 408....
210 Vic Jr. Heads
Air Gap Dual Plain intake,
11 to 1
750 DP
Very similarcam in a roller version
I think we are running about 500 HP & TQ or so at the FW, I wouldguess your combo might be a littlebetter on the top end..
210 Vic Jr. Heads
Air Gap Dual Plain intake,
11 to 1
750 DP
Very similarcam in a roller version
I think we are running about 500 HP & TQ or so at the FW, I wouldguess your combo might be a littlebetter on the top end..


