1973 el camino luck of power

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Re: 1973 el camino luck of power

Post by SSTOOLMAN on Thu Oct 23, 2014 10:28 am

bracketchev1221 wrote:You can compromise a little on this by maybe not putting so much gear in it, but increasing the stall speed of the converter.  The trick to quicker acceleration is how quick you can get the engine into its powerband.  So you can do it with gear, or make the converter slip to accelerate the engine a little faster.  But the converter won't affect your cruising rpm too much as gears do.  I plan on using a 3.42 gear and about a 24-2600 stall converter in mine.  
http://www.summitracing.com/parts/bmm-20412
I put in a B&M Hole Shot 2400 rpm converter this spring along with 3.42's and I love it... I went from 2.73's so its quite a difference.
The 275R60s' tires will smoke with little effort. Speedo is 11 mph faster than actual now and it runs 2800 rpm at 65 mph.
Dropped my gas mileage from 14 mpg to 11 mph. But that's the trade off... more fun = less $$$...
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Re: 1973 el camino luck of power

Post by rogal_tx on Thu Oct 23, 2014 1:10 pm

Is it worth looking for posi Rear end with 3.42s? Because I have 10 bolt non posi with 2.73s right now and don't know if I just should replace the gears to 3.42s?
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Re: 1973 el camino luck of power

Post by dynchel on Thu Oct 23, 2014 1:18 pm

i will warn you about my experience.  Before converting to posi i could "one wheel peel" for probably 30 feet.  After the posi, it is reduced to probably 15 feet with lots of wheel hop.  I have done alot of research and found it is more common with posi to get wheel hop than with a open rearend.  You may not aquire this problem, but its more headaches (and $$$) if you do.
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Re: 1973 el camino luck of power

Post by bracketchev1221 on Thu Oct 23, 2014 6:04 pm

You just need twice as much power now. That's all. Very Happy
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Re: 1973 el camino luck of power

Post by dynchel on Thu Oct 23, 2014 6:43 pm

bracketchev1221 wrote:You just need twice as much power now.  That's all.  Very Happy
Yeah, but his problem is "lack (luck?) Of power) plus a elcamino will have less weight over the rear end.
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Re: 1973 el camino luck of power

Post by rogal_tx on Thu Oct 23, 2014 8:27 pm

My bad (lack not luck) auto correct on my phone Wink
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Re: 1973 el camino luck of power

Post by rogal_tx on Fri Oct 24, 2014 12:20 am

Hey, I just uploaded video to youtube of the 1973 el camino that we have been talking about. Here is the link for those that want to see it.
Thanks for all the help.

http://youtu.be/9SFs8BIGrSI
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Re: 1973 el camino luck of power

Post by pila on Fri Oct 24, 2014 12:49 am

That '73 looks good. However, he needs to secure all the hoses & spark plug wires that are laying all over the engine. Simple stuff maybe, but it makes for a neat looking engine......

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Re: 1973 el camino luck of power

Post by rogal_tx on Fri Oct 24, 2014 9:05 am

In regards to hoses and spark plug wires, yes I will do secure all that to look more neat. It was secured at one point but firing order was wrong so I had to undo it.
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Re: 1973 el camino luck of power

Post by Dinomyte on Fri Oct 24, 2014 7:05 pm

Looks real nice.
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Re: 1973 el camino luck of power

Post by 77mali on Fri Oct 24, 2014 7:11 pm

Definitely sounds like a factory cam from the era. The motor sounds tuned well also.

Just curious but have you checked for any problems with the trans or the converter? Even with 2.73 rear gears- you s/b able to "feel" 190 horses when you hit the throttle.
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Re: 1973 el camino luck of power

Post by pila on Sat Oct 25, 2014 12:24 am

The bigger the engine, the lower the ratio in the rear ! Very Happy I got away with a 2.56 in the '77 Elco I had, with a well messaged 406, but it did eat two transmissions before I built my own...
A 3.73 would have been a lot of fun though....

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Re: 1973 el camino luck of power

Post by rogal_tx on Sat Oct 25, 2014 8:42 am

Transmission doesn't feel like its slipping, it was rebuild 6-8 months prior to my purchase. As far as problems with converter I'm not sure what to look for? I switched the vacuum line to port that gets constant vacuum and adjusted timing, carb and it runs a lot better. I'm not 100% sure that you can feel full 190 hp but it will get up and go compering to what it felt before.
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Re: 1973 el camino luck of power

Post by bracketchev1221 on Sat Oct 25, 2014 6:54 pm

pila wrote: The bigger the engine, the lower the ratio in the rear ! Very Happy   I got away with a 2.56 in the '77 Elco I had, with a well messaged 406, but it did eat two transmissions before I built my own...
A 3.73 would have been a lot of fun though....

So would a 540 cu in engine with a 4.88 gear make sense?Very Happy I had them when I went 9.30's then dropped to 4.56's when I went 9 teens, and now have 4.33 gears going 9.0's. Every time the mph went up, I kept having to drop the RPM back down to 7500 at the stripe.
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Re: 1973 el camino luck of power

Post by bracketchev1221 on Sat Oct 25, 2014 6:56 pm

I'll be honest, I think a 2.73 gear and a stock converter are just not going to let a short stroke 350 get up and go. Even 190 hp, is about 150 at the wheels.
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Re: 1973 el camino luck of power

Post by pila on Sat Oct 25, 2014 11:04 pm

Not a good combo for sure. Likely OK for a daily driver when not in a hurry....

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Re: 1973 el camino luck of power

Post by rogal_tx on Sun Oct 26, 2014 4:13 pm

Well, than its very clear and abvious what I have to do. Swap out stock converter and change out gears to 3.42, unless I will find posi track rear end with similar geers. Thanks everyone
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Re: 1973 el camino luck of power

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