Engine upgrade for my 72 vette
Thread Starter
Instructor
Joined: May 2015
Posts: 135
Likes: 8
Engine upgrade for my 72 vette
Curious what kind of horsepower I'll be making after I switch out my cam,heads,intake and carb
Current setup
Sbc 400 bored .30 over to a 406
Camel hump 291 heads 1.94,1.5 valves
.449/.449 with .222 duration at .50 116lsa cam with 1.6 rockers bringing the lift up to .481/.481
Dished pistons -20cc
Edelbrock performer intake with a 750 holley vacuum secondaries
What I plane to throw on
Already own the cam, intake and carb
Dart iron eagle platinums 49cc chambers 200cc intake runners with 2.02,1.6 valves
XE294H-10 cam .519/.523 lift .551/.555 lift with 1.6 rockers 250/256 duration at .50 and 110LSA
750 holley double pumper carb and an edelbrock scorpion single plane manifold.
Current setup
Sbc 400 bored .30 over to a 406
Camel hump 291 heads 1.94,1.5 valves
.449/.449 with .222 duration at .50 116lsa cam with 1.6 rockers bringing the lift up to .481/.481
Dished pistons -20cc
Edelbrock performer intake with a 750 holley vacuum secondaries
What I plane to throw on
Already own the cam, intake and carb
Dart iron eagle platinums 49cc chambers 200cc intake runners with 2.02,1.6 valves
XE294H-10 cam .519/.523 lift .551/.555 lift with 1.6 rockers 250/256 duration at .50 and 110LSA
750 holley double pumper carb and an edelbrock scorpion single plane manifold.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
U will know once u get them on won't u?
I really don't see the point at guessing what someone else put together. That implies every engine builder is the and makes no mistakes. I give u 50% chance of getting the engine running well enough to drive it on a regular basis. On top of that very few dyno's are accurate enough to measure within 20%. For $150/hr u lucky if dyno is within 20% actual hp. If u could find a 1% or 2% dyno that would run your motor it would cost more like $500-$1000/hr.
Get your motor in your car and weight it. Run the 1/4 mile and we will estimate your hp for. So get it running the ask.
Get your motor in your car and weight it. Run the 1/4 mile and we will estimate your hp for. So get it running the ask.
Thread Starter
Instructor
Joined: May 2015
Posts: 135
Likes: 8
I really don't see the point at guessing what someone else put together. That implies every engine builder is the and makes no mistakes. I give u 50% chance of getting the engine running well enough to drive it on a regular basis. On top of that very few dyno's are accurate enough to measure within 20%. For $150/hr u lucky if dyno is within 20% actual hp. If u could find a 1% or 2% dyno that would run your motor it would cost more like $500-$1000/hr.
Get your motor in your car and weight it. Run the 1/4 mile and we will estimate your hp for. So get it running the ask.
Get your motor in your car and weight it. Run the 1/4 mile and we will estimate your hp for. So get it running the ask.
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
Curious what kind of horsepower I'll be making after I switch out my cam,heads,intake and carb
Current setup
Sbc 400 bored .30 over to a 406
Camel hump 291 heads 1.94,1.5 valves
.449/.449 with .222 duration at .50 116lsa cam with 1.6 rockers bringing the lift up to .481/.481
Dished pistons -20cc
Edelbrock performer intake with a 750 holley vacuum secondaries
What I plane to throw on
Already own the cam, intake and carb
Dart iron eagle platinums 49cc chambers 200cc intake runners with 2.02,1.6 valves
XE294H-10 cam .519/.523 lift .551/.555 lift with 1.6 rockers 250/256 duration at .50 and 110LSA
750 holley double pumper carb and an edelbrock scorpion single plane manifold.
Current setup
Sbc 400 bored .30 over to a 406
Camel hump 291 heads 1.94,1.5 valves
.449/.449 with .222 duration at .50 116lsa cam with 1.6 rockers bringing the lift up to .481/.481
Dished pistons -20cc
Edelbrock performer intake with a 750 holley vacuum secondaries
What I plane to throw on
Already own the cam, intake and carb
Dart iron eagle platinums 49cc chambers 200cc intake runners with 2.02,1.6 valves
XE294H-10 cam .519/.523 lift .551/.555 lift with 1.6 rockers 250/256 duration at .50 and 110LSA
750 holley double pumper carb and an edelbrock scorpion single plane manifold.
If you put 49cc heads onto a 406" along with a track racing cam, intake, and 750 cfm carburetor and intend to drive it on the street you are either insane or just plain dumb.
Last edited by toobroketoretire; Dec 6, 2015 at 01:39 AM.
Thread Starter
Instructor
Joined: May 2015
Posts: 135
Likes: 8
Woah hold up now I know the compression ratio can be a bit alarming given why I have -20cc dished pistons. The car will be driven as a weekend car occasionally and down at the track a bit. If I want to mellow it out of course I can always go with the 64cc chambered iron eagle platinums instead.
Thread Starter
Instructor
Joined: May 2015
Posts: 135
Likes: 8
