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Discussion Starter #1
Total Rebuild, new cam, pistons, intake, and heads.

Dart Little M Block with Eagle Crank and Rods 3.875 with 6" rods.
JE Piston 182036 - Dome Volume: 5.6 - 13.6 CR - 4.155 - Zero Deck
Cam is a 4-7 swap .900 base @ .050 275 279
.683 with 1.6 Rockers
106 CL install at 101 (Cam was ground to 102) Install 2 degrees retard to get 101

PV is Intake: .063 Exhaust: .101 with test springs

AFR 220cc Eliminator Race Aluminum Cylinder Heads 65cc
Max lift .710
T & D Shaft Rocker 1.6
.040 Head Gasket

Super Victor II with 2" super sucker - 1050 setup for E85


My concern is cam install is 5 degrees advanced and PV clearance. Was told to install the cam straight up but that degreed in at 99. Working with cam company now and they are telling me it should work great at 101 (R2 to get that). I am not that good to know if this is correct or not. Need so input before I put it all together. New timing set, what could make it this far off?


Car setup is chassis car, 2650 lbs. with driver, Powerglide 1.80, 4.29 Gear, 14 x 32 tires, Converter 8" - 5800 Stall may be more with new engine setup. 1/8 mile only


Old setup was Top Proline 235, Dart Intake, Wiseco 4.155 1.060 +10cc, Comp Cams12-970-9 installed 2A

Car ran avg. of 6.18 @ 110 mph 1.31 60 ft. Did not have enough torque off the line and would unload the tires. Cam guy told me that cam would work but should have been 6 degrees advanced not 2. 4800 rpm on the line shifted at 6500 and 6800 at the stripe.


New setup shift at 7000...

So will it work right or is it a good setup? Hoping to be 700 hp.
 

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Too Strong, For Too Long.
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Total Rebuild, new cam, pistons, intake, and heads.

Dart Little M Block with Eagle Crank and Rods 3.875 with 6" rods.
JE Piston 182036 - Dome Volume: 5.6 - 13.6 CR - 4.155 - Zero Deck
Cam is a 4-7 swap .900 base @ .050 275 279
.683 with 1.6 Rockers
106 CL install at 101 (Cam was ground to 102) Install 2 degrees retard to get 101

PV is Intake: .063 Exhaust: .101 with test springs

AFR 220cc Eliminator Race Aluminum Cylinder Heads 65cc
Max lift .710
T & D Shaft Rocker 1.6
.040 Head Gasket

Super Victor II with 2" super sucker - 1050 setup for E85


My concern is cam install is 5 degrees advanced and PV clearance. Was told to install the cam straight up but that degreed in at 99. Working with cam company now and they are telling me it should work great at 101 (R2 to get that). I am not that good to know if this is correct or not. Need so input before I put it all together. New timing set, what could make it this far off?


Car setup is chassis car, 2650 lbs. with driver, Powerglide 1.80, 4.29 Gear, 14 x 32 tires, Converter 8" - 5800 Stall may be more with new engine setup. 1/8 mile only


Old setup was Top Proline 235, Dart Intake, Wiseco 4.155 1.060 +10cc, Comp Cams12-970-9 installed 2A

Car ran avg. of 6.18 @ 110 mph 1.31 60 ft. Did not have enough torque off the line and would unload the tires. Cam guy told me that cam would work but should have been 6 degrees advanced not 2. 4800 rpm on the line shifted at 6500 and 6800 at the stripe.


New setup shift at 7000...

So will it work right or is it a good setup? Hoping to be 700 hp.
See what you have for P to V at 103. Car is light. That cam will work good in that engine, 6,000 converter.
 

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Degree the cam to where it needs to be. Straight up is a relative term. In this case it only means that with no alteration to your timing set up its at 99. My last cam was the same way. 2 timing sets and checking it every way from Sunday it did not match the cam card. I forget off hand, I believe it was 4 degrees advanced. I made a move on the timing set to get it match the ICL and then when I checked it, all the numbers matched. That is where I ran it.
 

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Let us know P To V after lash intake and exhaust @102-103.
 

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OP, this cam wasn't popular when I posted it in these pages, either. Even less popular on the track. 427 sbc, box stock Brodix Track 1 heads. It's on a 103. 3250 pd car 10 x 28 tire dipped in the 5's off the trailer. That equates to around 750hp.

Keep moving forward.

I'd suggest ISKY 9985 springs for your app, I run that part# on the exhaust.


 

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Discussion Starter #10
I had the rear gear wrong, it is a 5.29. Talked with cam guys this morning and he told me it should be good right where it is. So PV with the springs on it should be another .008 so with .026 lash it should be Intake: .071 and Exhaust: .109.


PV
At 99 - Intake: .048 and Exhaust: .116.
At 101- Intake: .063 and Exhaust: .101.

It changes the PV by .015

At this point I think I am going to go with it and see what it does... Just want to put it out there and see if anyone thought this combo was off. Thanks for your input!
 

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I had the rear gear wrong, it is a 5.29. Talked with cam guys this morning and he told me it should be good right where it is. So PV with the springs on it should be another .008 so with .026 lash it should be Intake: .071 and Exhaust: .109.


PV
At 99 - Intake: .048 and Exhaust: .116.
At 101- Intake: .063 and Exhaust: .101.

It changes the PV by .015

At this point I think I am going to go with it and see what it does... Just want to put it out there and see if anyone thought this combo was off. Thanks for your input!
Sounds good. It should rock n roll, pretty good.
 

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I had the rear gear wrong, it is a 5.29. Talked with cam guys this morning and he told me it should be good right where it is. So PV with the springs on it should be another .008 so with .026 lash it should be Intake: .071 and Exhaust: .109.


PV
At 99 - Intake: .048 and Exhaust: .116.
At 101- Intake: .063 and Exhaust: .101.

It changes the PV by .015

At this point I think I am going to go with it and see what it does... Just want to put it out there and see if anyone thought this combo was off. Thanks for your input!
Ya, that’s more then safe.
 

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I had the rear gear wrong, it is a 5.29. Talked with cam guys this morning and he told me it should be good right where it is. So PV with the springs on it should be another .008 so with .026 lash it should be Intake: .071 and Exhaust: .109.


PV
At 99 - Intake: .048 and Exhaust: .116.
At 101- Intake: .063 and Exhaust: .101.

It changes the PV by .015

At this point I think I am going to go with it and see what it does... Just want to put it out there and see if anyone thought this combo was off. Thanks for your input!



Are you using checking springs ?
 

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Ran a best of 5.72 at 117.5 mph with a 1.21 60'. Picking up the wheels 10 to 12" now! Ran great all season!
View attachment 57896
That’s great. And earlier on your exhaust clearance, I misread your results. .101 is plenty. I had it backwards for some reason. I thought you had .063. Pay no attention to my first response. .085, and over is good in my book.
 

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Cam is a 4-7 swap .900 base @ .050 275 279
.683 with 1.6 Rockers
106 CL install at 101 (Cam was ground to 102) Install 2 degrees retard to get 101

AFR 220cc Eliminator Race Aluminum Cylinder Heads 65cc
Max lift .710
T & D Shaft Rocker 1.6

My concern is cam install is 5 degrees advanced and PV clearance. Was told to install the cam straight up but that degreed in at 99. Working with cam company now and they are telling me it should work great at 101 (R2 to get that).
Glad it's working great!

106 LSA installed at 101 is 5 degrees advanced. They ground it 4 degrees advanced to get the 102 figure. You installed it at 101, which is one degree from spec, so you're good. Once the timing chain stretches a tad and takes a set, you're at 102 anyway. :)

If you plan to do any upgrades to the heads in the future, and are investing in shaft rockers anyway... AFR has two 23 degree head configurations. One that does not require shaft rockers... and one that does. The ones that do not, have the pushrods in the stock locations, which pinches off the ports and limits RPM. The ones that do require offset shaft rockers allow more room between the pushrods, and offer more power/rpm potential. If you're buying shaft rockers anyway, it's definitely worth looking into the latter.

Your 220 heads are stock configuration. I believe their 227, 235 etc have the widened architecture. So... If you decide to step it up even further down the road, they may be worth looking into... ESPECIALLY since you are running alcohol, which likes a slightly larger port, anyway.

Good Luck, and glad you're having fun! Car is ROLLIN'!
 

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Sounds good!!

Have you thought about pulling some gear out of it? That 5.29 seems a bit much, imo.

Your setup is 300 lbs heavier, running 15 more cubes, plus a bit more stroke than the setup I raced ---- tube chassis Beretta --- Brodix Track1 heads that were hand ported - flowed just over 300cfm, 13.75 comp, Lunati Roller small base circle cam: 276 & 284 @ .050, .640 lift, 106 LSA, installed on 102 CL, T&D shaft rockers 1.5 I&E, Enderle Hat alcohol injected, 1.76 glide, 5200 conv, 4.56 rear, with 33" tall Hoosiers. Ran mid to high 5.60s in the summer heat and humidity @ 120 -121mph with a 1.21-1.22 60'. Best ET in cool, crisp fall air with no changes made to the fuel curve -- 5.55 @ 125mph and a 1.17 best 60'. If I put more thought into it, I would have opted for a set of 4.33 gears and kept the 32" tall rubber. But I made it work.

I think you could be taking more advantage of the torque your engine is producing. My 2c
 

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Discussion Starter #20
I went to the 5.29 to get my finish line RPM up to 7100 RPM to tighten up the converter {I only run 1/8 mile}. I am changing converters to a TSI 8" Bolt Together. It should be setup for 6000 stall. My current converter stalls at 6150 and slips 10% at the finish line. So, I hope to get the slip down and taking the stall down too.

I was shifting around 7000 to 7100 and that may be to high. Below is some data that I was looking at to see how changing the shift RPM effected the ET. The data is from my Race Pak and is the 60' to the 330' Max would be shift and Min is the Drop Back. Set Point is my Mega 450 doing the shifting. Let me know if you guys see anything that sticks out.
1581034445746.png
1581034567696.png
 
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