It was 30-40 lb-ft
950 cfm 4150. I pretty sure it was a Quick Fuel Q950.
I believe the ported RPM intake would respond in the same fashion to a larger cam. How much? I don't know because I've never tested it under those particular circumstances.
Intake Choice for 400/512 Stroker
- Thread starter Walker434
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950 cfm 4150. I pretty sure it was a Quick Fuel Q950.
I believe the ported RPM intake would respond in the same fashion to a larger cam. How much? I don't know because I've never tested it under those particular circumstances.
mopowers
Well-Known Member
Thank you. I totally mis-read. That's still huge though - 30-40 ft lbs. I wonder how a box-stock RPM would have fared against the ported version. Did any of the other intakes tested have any port work done to them?
Oldiron440
Well-Known Member
The thing is 30 or 40 ftlbs on the street when you have over 600 at 4000 rpm doesn't matter because you can't apply it and at the strip it will be below the stall on the converter, it's useless. I'll take the top end.
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A deep port matched RPM is still real good. I don't think there is a box stock intake in the shop other than a never used big block Victor and a never used Victor 340.
Torque is fun on the street. Top end is fun at the track, the few times you get to experience it.
Where I come from, top end is pretty fun on the street, too!
Not up here. 30 mph over the limit and they confiscate your car.
68 HEMI GTS
Well-Known Member
The OP wants to run 11.0’s. It’s gonna take a good 9 1/2 vert that flashes in the 4200+ range. While that sound radical a proper built vert like a PTC will drive around just fine on the street. IMO it’s gonna take some camshaft as well. Just the nature of the beast if you want the ET.
I may not get a lot of love for saying it, but a 75 shot with a plate system and a water meth system would be part of the program if I were going there.
Oldiron440
Well-Known Member
11.0s in a vert is a bit of a joke, don't you need a full cage at 11.30 in a convertable?
Ops car is hard top, very= converter
68 HEMI GTS
Well-Known Member
I find the dual plane vs single plane arguments very interesting. What I found on my car is I have enough converter that it doesn’t seem to care with the big motor. It’s a tight 9 1/2” but it flashes low 4 range. 4.10 gear with a 28” tire. Mind you though this is a very street friendly combo. I often drive this combo on 100+ mile round trips. I’ve driven it on the expressway, to work, etc. I shift it 5800-6000 range.
here’s the time slips with a port matched six pack. This is through exhaust, driving to the track, on DOT’s
No changes other than a ported TM6 and a 4150/1050AN carb. Also drove to the track on this day. Pretty much same weather conditions as when I ran it with the six pack. Not really a huge change either way.
Now I’ve also played with a Indy single plane that’s M/W ported with a dominator. I expected the port match to bother it as well as expected it to be lazy down low (didn’t really seem to be the case). While I don’t have any track data this combo flat *** ran. I would say hands down the strongest set up I’ve had on the car. I currently have the six pack back on it but I’ve done more porting, work on the dividers, and I now run a mechanical six pack (end carbs flow slightly more). This combo is also really strong (probably not as good as the Indy intake) but, I don’t have any track data on it either. My car is 4000# with me so it’s not lite. Very similar to what the OP wants to do. My results would probably be more dramatic with a tight converter but, to pull the et down you need something in the ball park like what I run. I’d have no issues running a 3.54 with this converter either. Its surprisingly tight when just normal driving. When I ordered it I was willing to give up et for drive-ability.
here’s the time slips with a port matched six pack. This is through exhaust, driving to the track, on DOT’s
No changes other than a ported TM6 and a 4150/1050AN carb. Also drove to the track on this day. Pretty much same weather conditions as when I ran it with the six pack. Not really a huge change either way.
Now I’ve also played with a Indy single plane that’s M/W ported with a dominator. I expected the port match to bother it as well as expected it to be lazy down low (didn’t really seem to be the case). While I don’t have any track data this combo flat *** ran. I would say hands down the strongest set up I’ve had on the car. I currently have the six pack back on it but I’ve done more porting, work on the dividers, and I now run a mechanical six pack (end carbs flow slightly more). This combo is also really strong (probably not as good as the Indy intake) but, I don’t have any track data on it either. My car is 4000# with me so it’s not lite. Very similar to what the OP wants to do. My results would probably be more dramatic with a tight converter but, to pull the et down you need something in the ball park like what I run. I’d have no issues running a 3.54 with this converter either. Its surprisingly tight when just normal driving. When I ordered it I was willing to give up et for drive-ability.
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Sorry, what size engine and what are your cam specs
68 HEMI GTS
Well-Known Member
10.5:1 pump gas 400/512. Cam is listed on post #52
Walker434
Well-Known Member
Thanks for all the responses. I've now ordered my camshaft.
Bullet Racing Cams Hydraulic Roller
Intake
250 @ .050
.375 Lobe Lift / .600 with 1.6 Rocker
303 duration @ .006
Exhaust
256 @ 0.50
.375 lobe lift / .600 with 1.6 Rocker
313 duration @ .006
110 lobe seperation
108 intake centerline
Trick Flow 240 heads are ordered from summit but won't ship until May. I think I've decided on the performer RPM intake.
We are not putting a cage in this beast. Want to be able to cruise the streets with 6 people if we choose. The car should be capable of 11.0s but we will dial it back to 11.50s for events like Dragweek.
The reason we need to run that quick is the N/A heads up 1/8 mile races we go to.
I will be ordering a custom built converter from Kenny at Ultimate Converters. He will know my entire build/goals and whatever he recommends on the stall is what we'll do. I'm guessing he'll want it to flash at least 4,500-4,800.
Bullet Racing Cams Hydraulic Roller
Intake
250 @ .050
.375 Lobe Lift / .600 with 1.6 Rocker
303 duration @ .006
Exhaust
256 @ 0.50
.375 lobe lift / .600 with 1.6 Rocker
313 duration @ .006
110 lobe seperation
108 intake centerline
Trick Flow 240 heads are ordered from summit but won't ship until May. I think I've decided on the performer RPM intake.
We are not putting a cage in this beast. Want to be able to cruise the streets with 6 people if we choose. The car should be capable of 11.0s but we will dial it back to 11.50s for events like Dragweek.
The reason we need to run that quick is the N/A heads up 1/8 mile races we go to.
I will be ordering a custom built converter from Kenny at Ultimate Converters. He will know my entire build/goals and whatever he recommends on the stall is what we'll do. I'm guessing he'll want it to flash at least 4,500-4,800.
Rat Bastid
Dunamis Metron
Let’s hope the heads ship by May. At this point, I add at least 50% time to whatever the seller is claiming for a shipping date.
AustinGriggs
Well-Known Member
Cody, how about a set of 4.88s and a gear vendors? 3rd gear 6000 rpm on 28s should get you to 100mph in the 1/8… that’s a recipe that could take on our arch rivals in the Pontiacs camp… I’m rooting for you!
Walker434
Well-Known Member
The problem with the gear vendor is it's another $3K and only 20% overdrive. So, that would make our 4.88s seem like 3.90s on the highway at dragweek. Not bad, but not great. Also, with this giant 4.25 inch crank i'm thinking it's going to have plenty of torque for the 3.54 gears. Then again, this boat weighs over 4,000 lbs. Choices choices. We are trying to run with the Pontiacs.
Walker434
Well-Known Member
Well, thanks a lot Austin! I've been thinking about this all day... we could go 4.11 gears in the dana and with a gearvendor that would make is seem like a 3.29 gear on the interstate. Not bad! Way to spend my $3,000! You should work for Gearvendors!
AustinGriggs
Well-Known Member
Yea, 4.30s might force you to use OD in the 1/4 which isn't ideal. That is if you can build the power to go 125mph.... the ball is in your court. Tell GV I sent you!
Bigdummy
Not a Nova
I'll see thisbyear what my rpm will do for my 470 with trick flow heads.If it acts like it wants to pull I'll change to a trickflow AndyF did tests and out of the box it flows the best but I don't have a stock hood
Bigdummy
Not a Nova
AustinGriggs
Well-Known Member
The timing is impeccable for this video to come out. This is pretty much what you are building Cody, plenty of food for thought here.
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