cam change what to expect

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cam change what to expect

Post  zbob on August 25th 2015, 10:54 pm

gentlemen, tired of high 12s want low 12s.
..... edelbrock rpm heads 75 cc, torker ii intake, proform 850 street carb, shorty headers, 327 gears with 26 tall tires.  two ton pistons 5 in the hole,
.....cam is a wuss cam 213 219 520 lift. gonna try a 274 voodoo cam. I believe it is 227 230 and 560ish lift. I  need enough vacuum for power brakes. ability to drive around minn wisc etc is important to me. will the cam change get it done? thanks bobn

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Re: cam change what to expect

Post  69F100 on August 25th 2015, 11:14 pm

Bob you can always get a electric vacuum pump to run the power brakes we ordered one for the guy I work with for his 82 Volvo he said it works fine. Just something to think about for a option
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Re: cam change what to expect

Post  dfree383 on August 26th 2015, 7:29 am

I'd up the gears a little too
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Re: cam change what to expect

Post  rmcomprandy on August 26th 2015, 8:06 am

zbob wrote:gentlemen, tired of high 12s want low 12s.
..... edelbrock rpm heads 75 cc, torker ii intake, proform 850 street carb, shorty headers, 327 gears with 26 tall tires.  two ton pistons 5 in the hole,
.....cam is a wuss cam 213 219 520 lift. gonna try a 274 voodoo cam. I believe it is 227 230 and 560ish lift. I  need enough vacuum for power brakes. ability to drive around minn wisc etc is important to me. will the cam change get it done? thanks bobn

I don't think you will ever, EVER, get more than the half a second improvement in E.T. you are seeking from just a camshaft change.
Unless you are talking about going from 19.10 seconds to about 18.20.

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Re: cam change what to expect

Post  zbob on August 26th 2015, 8:10 am

okay, more gear and not that much over a cam change. thanks gents. 12.8 at 108 brainerd like clockwork. 12.5s would be decent enough for a street cruiser.
there is absolutely no track prep on street car night. most of the new stangs, Camaros and mopars are running low 13s. the vettes and caddys high 12s. mufflers and drs. absolutely no slicks either.
///just looking to stay ahead of most of them..... thanks again for replies, bobn

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Re: cam change what to expect

Post  supervel45 on August 26th 2015, 9:05 am

http://edelbrock.com/automotive/mc/camshafts/ford-bb.shtml                                                                                                                           Just a thought. Edelbrock claims 500HP with their Performer RPM cam. You will probably need more gear, and maybe convertor, depending on what you have now.

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Re: cam change what to expect

Post  DaveMcLain on August 26th 2015, 2:54 pm

Something like a Davis traction control device might be interesting to try too on a night when they don't prep the track.

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Re: cam change what to expect

Post  zbob on August 26th 2015, 6:44 pm

hmm look cool but a sponsor would be needed for one of them dave.....

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Re: cam change what to expect

Post  YellowStangDuane on August 26th 2015, 9:19 pm

What is this in? Weight? Post the 60' and mph too. Might need some tuning.
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Re: cam change what to expect

Post  zbob on August 26th 2015, 10:38 pm

3280 pds, zeph, 108 trap speed, no traction, nobody else has any either. street car night. no room in the fender wells for any thing bigger than a 8 inch tire. third gear is where it lays down.
.... most off the cars are in the mid 13s. less than 10 percent run faster than that. I am just looking to stay out in front off the pack. the real racers come on the weekends and run brackets. those guys are like you heros. for us there are no eliminations, make all the passes you want. most of the guys try to line up with similar cars for fun of it....zbob

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Re: cam change what to expect

Post  FalconEh on August 26th 2015, 10:44 pm

Juice Exclamation
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Re: cam change what to expect

Post  supervel45 on August 26th 2015, 11:46 pm

zbob wrote:3280 pds,  zeph,  108 trap speed, no traction, nobody else has any either. street car night. no room in the fender wells for any thing bigger than a 8 inch tire. third gear is where it lays down.
.... most off the cars are in the mid 13s. less than 10 percent run faster than that.  I am just looking to stay out in front off the pack. the real racers come on the weekends and run brackets. those guys are like you heros. for us there are no eliminations, make all the passes you want. most of the guys try to line up with similar cars for fun of it....zbob
Kind of reminds me of the FAST series, that race on factory tires. They run tight convertors and big cams, which can help with low traction, and make it up on the big end. You might try that RPM cam with the gears and convertor you have and see what it does, if you don't have the Lunati yet. Put a 100lb lb bag of concrete n the trunk too.

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Re: cam change what to expect

Post  zbob on August 29th 2015, 11:59 am

cam is in, valves adjusted. have all day Monday, Tuesday to finish assembling it. either break it in or screw it up. Wensday is the last street car night. zbob

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Re: cam change what to expect

Post  supervel45 on August 29th 2015, 6:50 pm

Are you going to use the oil additive to help break in the lifters?

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Re: cam change what to expect

Post  zbob on August 29th 2015, 7:23 pm

yes sir. poured it already. old style gm eos on top of old union 76 racing oil. one of the benefits of being 60 plus young is having shit like that stashed, lol. bob

intake is the only hold up now.

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Re: cam change what to expect

Post  supervel45 on August 29th 2015, 7:38 pm

Is it in the cardboard cans? Cool Tell us how it works out when you get back from the track.

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Re: cam change what to expect

Post  Straubtech on August 31st 2015, 5:47 pm

I would expect little to no gain. The BBF family has inherent poor flowing exhaust ports. Not an issue if you give the engine what it needs for lobe area on the exhaust side.

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Re: cam change what to expect

Post  zbob on August 31st 2015, 9:32 pm

for the heck of it I just checked edelbrocks website. performer series heads. the 454 chev, the 460 ford, 440 chrysler heads all flow within 10 cfm on the exhaust side. so it looks like they all suck, lol about the same. so my ford with its aftermarket street type heads is on par with the rest. bob

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Re: cam change what to expect

Post  BOSS 429 on September 1st 2015, 6:21 am

69F100 wrote:Bob you can always get a electric vacuum pump to run the power brakes we ordered one for the guy I work with for his 82 Volvo he said it works fine. Just something to think about for a option




How much are those? what brand do you guys like?
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Re: cam change what to expect

Post  69F100 on September 1st 2015, 4:30 pm

Rich we used a comp cams from summit I will post a link tonight when I get home of the one we used I think it was around $300 for the whole kit with everything
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Re: cam change what to expect

Post  rmcomprandy on September 1st 2015, 5:33 pm

BOSS 429 wrote:
69F100 wrote:Bob you can always get a electric vacuum pump to run the power brakes we ordered one for the guy I work with for his 82 Volvo he said it works fine. Just something to think about for a option

How much are those? what brand do you guys like?

The only ELECTRIC vacuum pump large enough to do a really masterful job with larger engines is the STAR EVP pump which uses DeWalt batteries for power.

They cost a bunch of money ... almost $1,800.00 I think.

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Re: cam change what to expect

Post  69F100 on September 2nd 2015, 1:42 am

here is the one we got from summit it works good for power brakes and heater controls but would not recommend it for pulling vacuum out of the motor though  

ebay has some that looks just like it but not sure if they are the same

http://www.summitracing.com/parts/cca-5500
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Re: cam change what to expect

Post  zbob on September 2nd 2015, 9:41 am

cam is run in. timing set. oil changed. gonna go from a 78 to a 80 jet. 1200 altitude here. get the grill and bumper on it. load it on the trailer and go to the track. instead of talking about it, lol. zbob

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Re: cam change what to expect

Post  69F100 on September 2nd 2015, 10:30 am

Get to it Bob let us know how it runs
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Cam change

Post  Inthegarage on September 6th 2015, 8:31 pm

Definitely waiting for results..............Good Luck

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