How much HP/TQ for this carbed 400 sbc?
11-02-2005, 12:47 PM
#1
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Location: Dekalb, IL 60115
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How much HP/TQ for this carbed 400 sbc? So what do you think I will get at the dyno?
I have a 1995 Firebird Formula with a 6 speed
Took out the tired LT1 and put in a 400 ci SBC with the 6 speed
From bottom to top:
Crankshaft Specialists forged stroker crank
Oliver Steel Main Caps with ARP Hardware
Eagle H Beam 6.0" rods with floating pins
SRP Forged Dished Nitrous Pistons (10.5:1 compression)
Comp Cams Solid Mechanical Roller Cam ( .615 intake and .615 exhaust)
Comp Cams Matching Mechanical Roller Lifters
Comp Cams Hi Tech Chrome Moly Pushrods
Jesel Sportsman Series Shaft Mount Roller Rockers (1.6 ratio intake/exhaust)
Edelbrock Performer RPM Aluminum Heads (3 angle valve job, minor porting)
Edelbrock Performer Aluminum Intake
MSD ign. with Master Blaster Coil, Pro Bilet Distributor, and 6AL Digital Box
Holley 750 HP carb gone through by PRC Racing in Texas
BBK Ceramic Coated Shorty Headers with Custom 3 inch ypipe
I have a 1995 Firebird Formula with a 6 speed
Took out the tired LT1 and put in a 400 ci SBC with the 6 speed
From bottom to top:
Crankshaft Specialists forged stroker crank
Oliver Steel Main Caps with ARP Hardware
Eagle H Beam 6.0" rods with floating pins
SRP Forged Dished Nitrous Pistons (10.5:1 compression)
Comp Cams Solid Mechanical Roller Cam ( .615 intake and .615 exhaust)
Comp Cams Matching Mechanical Roller Lifters
Comp Cams Hi Tech Chrome Moly Pushrods
Jesel Sportsman Series Shaft Mount Roller Rockers (1.6 ratio intake/exhaust)
Edelbrock Performer RPM Aluminum Heads (3 angle valve job, minor porting)
Edelbrock Performer Aluminum Intake
MSD ign. with Master Blaster Coil, Pro Bilet Distributor, and 6AL Digital Box
Holley 750 HP carb gone through by PRC Racing in Texas
BBK Ceramic Coated Shorty Headers with Custom 3 inch ypipe
11-02-2005, 02:41 PM
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What's the cams duration? Your intake is too small. Your heads are OK but it depends on what RPM you plan on spinning it to. They are actually on the small side for a stout 40x.
11-05-2005, 09:17 PM
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The duration is
Advertised @.050
IN EX IN EX
300 308 255 262
Yeah, I could have went bigger for the heads, but this is a street motor and I take the car to the strip once a year. The intake had to be a low profile for the hood clearance. With the short performer intake, I only have 2.5 inches between the top of the carb and the bottom of the hood. I did have the Performer RPM, but I couldn't go with it because of the same hood clearance problem. The power range is supposed to be from around 3-6500 RPMS.
Advertised @.050
IN EX IN EX
300 308 255 262
Yeah, I could have went bigger for the heads, but this is a street motor and I take the car to the strip once a year. The intake had to be a low profile for the hood clearance. With the short performer intake, I only have 2.5 inches between the top of the carb and the bottom of the hood. I did have the Performer RPM, but I couldn't go with it because of the same hood clearance problem. The power range is supposed to be from around 3-6500 RPMS.
