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Discussion Starter · #1 ·
So I'm wondering if anyone can possibly help me out in trying to figure out what kind of ETs I can expect to get in my car. Here's some details about the car

1970 El Camino
3500 race weight... not sure if thats correct
400 SB standard bore
10.5:1
crane hyd roller 240/248 @.50 558/558 lift
Victor Jr
850 Demon carb
AFR 195s fully CNC'd 2.05 1.6 valves

TH-400
RMVD
3500 stall

12 bolt rear with 4.10 gears

Just looking to get some estimates from you guys.
 

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Butch
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8,209 Posts
So I'm wondering if anyone can possibly help me out in trying to figure out what kind of ETs I can expect to get in my car. Here's some details about the car

1970 El Camino
3500 race weight... not sure if thats correct
400 SB standard bore
10.5:1
crane hyd roller 240/248 @.50 558/558 lift
Victor Jr
850 Demon carb
AFR 195s fully CNC'd 2.05 1.6 valves

TH-400
RMVD
3500 stall

12 bolt rear with 4.10 gears

Just looking to get some estimates from you guys.
It could go mid to low 11's but I doubt it with that converter, It is probably off the shelf with high slippage. The cam is probably a shelf grind, I would have used a different series from Crane but that is just what I like.

I'm gonna say you should have low 12's to mid 12's, converter change and IMO its in the 11's, cam change and low 11's. This is assuming the car hooks and is set up pretty descent. Looks like a nice street build no matter what
 

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11.50 to 11.60's... somewhere in there. With a solid launch,,, Mid 1.50's to 60... or better... My 2. Have fun.
 

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Discussion Starter · #5 ·
It could go mid to low 11's but I doubt it with that converter, It is probably off the shelf with high slippage. The cam is probably a shelf grind, I would have used a different series from Crane but that is just what I like.

I'm gonna say you should have low 12's to mid 12's, converter change and IMO its in the 11's, cam change and low 11's. This is assuming the car hooks and is set up pretty descent. Looks like a nice street build no matter what
Im hoping for some mid to high 11s on motor. What kind of convertor would you choose. The convertor I have is a revmax, I know they are not a big name company but I like what I saw when I went to their shop. Its a pretty good convertor, billet front cover, upgraded sprag, and an anti balooning plate.
 

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Butch
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Im hoping for some mid to high 11s on motor. What kind of convertor would you choose. The convertor I have is a revmax, I know they are not a big name company but I like what I saw when I went to their shop. Its a pretty good convertor, billet front cover, upgraded sprag, and an anti balooning plate.
ATI but if it has low slippage it might be ok for you. Is the cam on a 112° lobe center or 110° lobe center from the catalog part number?
 

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Butch
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It has a 110 lobe separation
It might hit high 11's as is, if everything is perfectly tuned, and still maybe. With a cam change and a known converter (I know nothing about yours) I can see low to mid 11's, again as long as the car works good and has good traction
 

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Discussion Starter · #9 ·
It might hit high 11's as is, if everything is perfectly tuned, and still maybe. With a cam change and a known converter (I know nothing about yours) I can see low to mid 11's, again as long as the car works good and has good traction
What kind of cam are you thinking?
 

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Butch
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Hydraulic Roller for street,,,
300/308
238/246
160/166
.605"/.558" with 1.6/1.5
107° lobe separation

If your going with a higher stall, like an ATI that will flash 5000rpm and drive better than most 3500/4000rpm converter's and didn't mind going solid roller, I would use this grind but would need different rockers and all. This grind has went 10.70's with similar set up in a Nova (Your guess is good as mine as the race weight, all street but a glass hood) and went 8.40's at 1850 race weight in a 406 with Dart 215 Platinum Heads
290/306 @.020" tappet lift
260/268 @.050" tappet lift
184/183 @.200" tappet lift
.670"/.625" with 1.5's
106° lobe separation
.012"/.018" lash
.960" base circle
 

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Discussion Starter · #11 ·
Hydraulic Roller for street,,,
300/308
238/246
160/166
.605"/.558" with 1.6/1.5
107° lobe separation

If your going with a higher stall, like an ATI that will flash 5000rpm and drive better than most 3500/4000rpm converter's and didn't mind going solid roller, I would use this grind but would need different rockers and all. This grind has went 10.70's with similar set up in a Nova (Your guess is good as mine as the race weight, all street but a glass hood) and went 8.40's at 1850 race weight in a 406 with Dart 215 Platinum Heads
290/306 @.020" tappet lift
260/268 @.050" tappet lift
184/183 @.200" tappet lift
.670"/.625" with 1.5's
106° lobe separation
.012"/.018" lash
.960" base circle
There's so many different combos. Honestly I think I'll he a little disappointed if it doesn't run 11s on motor. Now let's try this... With my current setup let add 150 shot of go fast juice.
 

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Butch
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There's so many different combos. Honestly I think I'll he a little disappointed if it doesn't run 11s on motor. Now let's try this... With my current setup let add 150 shot of go fast juice.
I think you can get the 11's with a GOOD converter, not calling your not good, just I have no data on yours to know how it reacts.

The two set ups I listed, are pretty much to take advantage of the compression and combo for fast times, low 11's to mid 10's. If your converter acts like the 'ol blue ones, mid 12's but the power IMO is there if the converter does its job
 

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So I'm wondering if anyone can possibly help me out in trying to figure out what kind of ETs I can expect to get in my car. Here's some details about the car

1970 El Camino
3500 race weight... not sure if thats correct
400 SB standard bore
10.5:1
crane hyd roller 240/248 @.50 558/558 lift
Victor Jr
850 Demon carb
AFR 195s fully CNC'd 2.05 1.6 valves

TH-400
RMVD
3500 stall

12 bolt rear with 4.10 gears

Just looking to get some estimates from you guys.
The set-up you have is proven to make 500-525 HP if running right..... and assuming you get it right, and that 3500 rpm converter actually "flashes" up into the low 4000's, I believe you are easy 11's...... I would guestimate with some time to sort it out, you'll whittle it down to low 11's. If you're not, you got something wrong. Thus, my official guess is 11.3 @ 119 mph once you get it dialed in..... lose some more weight and you might sneak into the 10's.

As a note, I think it was Hot Rod (maybe it was car craft) that built basically an identical set-up to you years ago in a Chev vs Ford shootout. I think they used comp cams 242-248 off the shelf hyd roller grind. They made a little over 500 HP and in they put it in a Nova that weighed I believe 3500 lbs and ran a low 11 at about 120 mph. I think they used the 210's cylinder heads though, but the street version. Was a 406. The eliminator 195's are every bit as good as they old 210's.... and maybe even better.

Whatever it runs, sounds like a fun true street set-up...... have fun with it and good luck ! :cool:
 

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Just a guess here, but with those 195s, that carb may be a bit too big. Might see if someone has a 750 you can borrow to run back-to back passes and see which is better. I'd suggest holding onto the 850 for future improvements, but get ahold of a 750 for the current setup.
 

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Discussion Starter · #16 ·
Just a guess here, but with those 195s, that carb may be a bit too big. Might see if someone has a 750 you can borrow to run back-to back passes and see which is better. I'd suggest holding onto the 850 for future improvements, but get ahold of a 750 for the current setup.
Oops... It actually is a 750 demon... When I was going to buy the carb there was talk that an 850 would be to much so I got a 750
 

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Discussion Starter · #17 ·
It could go mid to low 11's but I doubt it with that converter, It is probably off the shelf with high slippage. The cam is probably a shelf grind, I would have used a different series from Crane but that is just what I like.

I'm gonna say you should have low 12's to mid 12's, converter change and IMO its in the 11's, cam change and low 11's. This is assuming the car hooks and is set up pretty descent. Looks like a nice street build no matter what


not too shabby for completely stock suspension and being ill tuned. I still need to do more tuning to it Iwas overall impressed with the first time its been on the track. I know theres room for more improvement. The car seemed to fall off at half track. I was getting some detonation which i have to sort out and my timing is still a little out.
 
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