Chevelles.com banner

1 - 20 of 32 Posts

·
Registered
Joined
·
1,077 Posts
Discussion Starter #1
468
9.97:1 diamond pistons with ceramic coated tops
dart pro-1 heads 310 runner
229 [email protected] .50 .640 lift 112LSA
eagle h beams with 2000 bolt upgrade
4.00 inch scat 4340 crank
head studs
4 bolt with main studs
435hp tri-power set up







 

·
Registered
Joined
·
664 Posts
nice!,talk about a flat torque curve,gonna have real good street manners and pull like hell too!!

are you using any spacers under the carbs?,might be woth a few ponies,if they make 'em in phenolic they'll stay cooler too
 

·
Registered
Joined
·
1,077 Posts
Discussion Starter #3
the spacers that i have under the carbs are nitrous plates LOL those are worth a few ponies LOL
 

·
Registered
Joined
·
664 Posts
ha ha,so you had evil things in mind when you specd out the 112 LSA LOL!
 

·
Registered
Joined
·
13,341 Posts
Nice Steve. I'm pretty much running the exact same motor with a tad more compression, sungle carb and more cam. Interesting on the 39* timing. I hadn't dyno'd mine, but did move the timing from 36* to 38* and felt it ran stronger with more timing. One thing I am suprised at is how high the torque peak is given the relatively short cam timing. Looks like you had a peak at 4600 (where would expect it to peak), then rolled off as expected. Possibly the higher peak is some characteristic of the 3-2's??
 

·
Premium Member
Joined
·
1,710 Posts
Luv that flat torque curve.....& safe tune.....nice powerfull streetable piece.
Plenty of info...interesting & informative .....tri power adds some very cool nostalgia.
Congrats
 

·
Premium Member
Joined
·
2,637 Posts
Very nice, Steve.:thumbsup:

I guess we don't have to be scared of running rectangle port heads on a "smaller" big block with moderate compression. How would the numbers have changed with some Brodix RR ovals, or similar oval heads? I mean that is a pretty flat torque curve. How much would the ovals bump up the torque?
 

·
Registered
Joined
·
1,077 Posts
Discussion Starter #9
thanks for the kind words guys.... all i can say it i am very happy with the numbers... even suprised it a lot of ways... glad to see the flat torque and the hp was very nice. guess that old DP 3X2 set up aint too bad LOL and UDHarold did a great job on the cam
 

·
Premium Member
Joined
·
3,536 Posts
thanks for the kind words guys.... all i can say it i am very happy with the numbers... even suprised it a lot of ways... glad to see the flat torque and the hp was very nice. guess that old DP 3X2 set up aint too bad LOL and UDHarold did a great job on the cam
Would you mind sharing the specs of the cam?
 

·
Registered
Joined
·
37 Posts
I just dyno'd my 468 a few weeks back. I had my motor built by Competition Engines in Eagan. Applied Dyno did the dyno session. My motor was a 10.7 to 1 motor with Brodix Race Rite Rectangle Port heads, RPM Air Gap, Hydraulic Roller .621 Intake, .615 exhaust. Duration was 242 Intake 248 exhaust on a 110 core. Pro Systems 950 HP. Motor did not peak quite as high but still pulled 574HP from 5800-6200rpm. My torque was a bit better going over 580 lb. ft. from 4200 to 5000 rpm's. Motor is in and I have 300 miles on it now and still getting a few bugs resolved. It pulls like a mother! My old 408 ran 12.9's at 104mph. I have dropped a 100 lbs. and have another 175 horsepower, I'm thinking 11.60-11.70 at 116mph when I go to Brainerd next week.
 

·
Registered
Joined
·
1,077 Posts
Discussion Starter #12
I just dyno'd my 468 a few weeks back. I had my motor built by Competition Engines in Eagan. Applied Dyno did the dyno session. My motor was a 10.7 to 1 motor with Brodix Race Rite Rectangle Port heads, RPM Air Gap, Hydraulic Roller .621 Intake, .615 exhaust. Duration was 242 Intake 248 exhaust on a 110 core. Pro Systems 950 HP. Motor did not peak quite as high but still pulled 574HP from 5800-6200rpm. My torque was a bit better going over 580 lb. ft. from 4200 to 5000 rpm's. Motor is in and I have 300 miles on it now and still getting a few bugs resolved. It pulls like a mother! My old 408 ran 12.9's at 104mph. I have dropped a 100 lbs. and have another 175 horsepower, I'm thinking 11.60-11.70 at 116mph when I go to Brainerd next week.
nice numbers... im sure im giving up some in the carburetor/intake area you have more compression bigger cam and smaller runner head IIRC your heads should be about 294cc intake to my 310... your duration is more but less lift and your ruinning a 110 to my 112 LSA IDK.... both mootors should be fun :)
 

·
Registered
Joined
·
1,077 Posts
Discussion Starter #13
Would you mind sharing the specs of the cam?

cam to be honest was not for this motor.... i had a 461 9:1 that we specd it out for decided that motor (2 bolt stock rod trw piston) was not going to do what i wanted so i built this one the cam was for that so with the added point of compression and 7 more cubes he said he would have stepped it up one step....

anywho the cam is a small cam coming it at 229 236 @50 .640 lift and 112LSA ICL not totally sure but is in the 106-108 area should have gone closer to chemical guy on the duration but.... im happy
 

·
Registered
Joined
·
13,341 Posts
I just dyno'd my 468 a few weeks back. I had my motor built by Competition Engines in Eagan. Applied Dyno did the dyno session. My motor was a 10.7 to 1 motor with Brodix Race Rite Rectangle Port heads, RPM Air Gap, Hydraulic Roller .621 Intake, .615 exhaust. Duration was 242 Intake 248 exhaust on a 110 core. Pro Systems 950 HP. Motor did not peak quite as high but still pulled 574HP from 5800-6200rpm. My torque was a bit better going over 580 lb. ft. from 4200 to 5000 rpm's. Motor is in and I have 300 miles on it now and still getting a few bugs resolved. It pulls like a mother! My old 408 ran 12.9's at 104mph. I have dropped a 100 lbs. and have another 175 horsepower, I'm thinking 11.60-11.70 at 116mph when I go to Brainerd next week.
Scott. real close to my current setup. Dart 310 heads w/ 245/252 .651/.651 on 110LSA cam. AirGap and 850 carb. I think your ET predictions are conservative. JMHO,unless you run in air quality or track prep as poor as I did a few weeks ago, if you get it to hook, 11.40-11.50 @ 117-118 (or better).
 

·
Registered
Joined
·
2,410 Posts
Scott. real close to my current setup. Dart 310 heads w/ 245/252 .651/.651 on 110LSA cam. AirGap and 850 carb. I think your ET predictions are conservative. JMHO,unless you run in air quality or track prep as poor as I did a few weeks ago, if you get it to hook, 11.40-11.50 @ 117-118 (or better).
Are you running this engine with the 2200 Stall converter in your sig?
 

·
Registered
Joined
·
13,341 Posts
Brandon, No, that converter wasn't up to the task. I went with a good 9.5" 3000 stall converter from Pat's Performance Converters. Huge difference. Very mild mannered on the street at lite throttle w/ the 3.73 gears, but nail it off-idle and the converter hits like you just sprayed a 100 shot. Will be a few weeks till I can wear shoes on both feet again, so no track time for a while. Gonna get the suspension corrected in the interim, but I fully expect to run sub 11.50. I really don't see any reason any of these 454 based combos won't hit those numbers. Biggest challenge is getting the power to the ground.
 

·
Registered
Joined
·
2,410 Posts
Nice...my build is similar as well and im also getting a custom 9.5" with 3000 Stall. Was thinking of bumping the stall just a bit though...guess I will try it first. Im still about 1-2 months out before I get the transmission...engine took all my money!!! lol
 

·
Registered
Joined
·
13,341 Posts
Nice...my build is similar as well and im also getting a custom 9.5" with 3000 Stall. Was thinking of bumping the stall just a bit though...guess I will try it first. Im still about 1-2 months out before I get the transmission...engine took all my money!!! lol
Depnds on how much tire you run and how well you get the chsssis set-up. I run a 275-60/15 MT DR w/ 3.73 gears. Ona non prepped track it's like driving on a wet street.
 

·
Registered
Joined
·
1,077 Posts
Discussion Starter #20
steve,

Are those 1.65:1 rockers? Lobe lift X 1.7 is .659". Am I giving away a secret?

UDHarold

not unless you sent me the wrong cam LOL the sheet says .3755 max cam lift soooo .638 lift with a 1.7

281 @ .006 229 @.050 152 @.200 intake and exhaust reads 290 @.006 237 @.050 and 159 @.200
 
1 - 20 of 32 Posts
Top