I wanted to get some opinions on what I can do to gain a little more HP with this combination. I am running a stock type fan for cooling so I know that is one area that I can improve on. I drive this car on the street and to the track but would like to reach the 10s if possible. I think maybe the cam is little big for a 10 to 1 motor, but I am looking for criticism from you guys.

Thanks Bill


69 Camaro 3500lbs with driver
11.20 et @ 118 mph

Drive train 427 cubic inch
Turbo 350 transmission
10 inch converter 3500 stall
12 bolt rear with 4.10 gears

Engine components
Bore - 4.250 + .060
Stroke - 3.760
Crankshaft- Factory forged steel
Rods - Eagle Rods
Pistons - SRP 427 open chamber + .060 10 To 1 compression
Rings - Speed pro
Camshaft - Comp cams Solid Roller 11-772-8
.248 .254 @ .050 .653 .660 lift RPM 3000 to 7000
Heads - Edelbrock performer rpms oval port part # 6045 port volume 290
Combustion size 110 valve size 2.190-1.880
Intake - Edelbrock Victor
Carburetor - Holley 4500 series 750 cfm dominator
Holley 110 mech.
Edlebrock alum water pump
Distributor HEI with msd box 6al
Headers - Headman 2” headers 3” Collectors
3” exhaust with tail pipes
2 Chamber Flowmasters Muffler

You don't need any more power to run 10's IMO, but I do see three things that need changing to get there.

1. get a looser/better converter. I run an 8" ATI that flashes to 5500 rpm behind my 427 (I run the same cam as you). You can easily pick up three tenths with a top quality converter.

2. larger fuel pump...if mechanical, use a Carter 172 Competition pump. If electric, then a Mallory Comp 140 would be a good choice.

3. ditch the 750 dominator in favor of a 950HP carb.What tires do you run?

I pretty much agree with Todd. If you are going to keep the intake and carb you need a lot more convertor.

I have been running the car on ET streets 28X10.5 with and 8 Inch rim. The car has had a best 60 ft of 1.55 but normally runs around 1.58 to 1.60.

My converter will flash to about 4000 I guess, I am not to good at looking down at the tack during a launch.

The fuel pressure is at about 5 to 6 pounds at the 1/4 mile and I have not felt the car lay over on the big end.

10secBu what intake would you suggest with my motor and a 950 Hp carb?

I run an Edelbrock Victor Jr. oval port myself. I'm running a very old Brad Urban's Carb Shop 850, but the 950 HP is a more modern better design...hard to beat that carb on most any 500-650 hp engine.

Even though you may not feel any loss from the current fuel system, I't still suggest you upgrade both the pump and possibly the lines and pickup for most efficient flow.

10secBu

I have upgraded the fuel line to 1/2 inch from the tank to the pump, and I will look at upgrading the pump to one like you suggest. I was using this holley pump so that I didn't need to use a regulator.

What pressure do you see at the top in on your car.

With the Carter 172 Competition mechanical pump, there is no need to run a regulator.

I myself run a Mallory Comp 250 pump...pressure stays at 7 1/4 lbs the entire run.

What brand/size (in inches) is your current converter?

10secBu

I am not to sure what the brand is, I bought it with the transmission, it was built by a guy in florida I was told.

A guy here in pasadena Tx built the tranny and is using this guy to build converters. I was happy with how it has worked so far, but it would be interesting to see what the car would 60ft with and 8 inch.

I'm not saying you need an 8" converter...depends on your intended usage. A good 10" might work reasonably well if your car sees alot of street duty. If it's mainly a weekend cruiser, an 8" might be livable...mine is, but ATI's are know for their ability to flash where they need to be, yet still be considered somewhat tight at cruising speeds/rpms.

For best ET though, you need to get the engine into it's power band quicker and longer...this is why a looser converter will make your car quicker.