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  #76 (permalink)  
Old 03-27-2011, 03:15 AM
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Quote:
Originally Posted by wadedog
sorry don't know your answers , my builder isn't saying what springs he used and I haven't measured them or have the tools to do so. I don't think I have a problem with bigger diameter springs. I don't know what my heads will accept,sorry.
Pretty hard to make any kind of direct part # recommendation without some idea of what will fit in there, but basically you would be looking at 125-140 lbs seat with 300-340 lbs open. You're going to have to get in there with a pair of calipers and at least get a diameter and use the depth finder on the caliper to get a decent idea of installed height.

You can get a functional digital 6" caliper off Ebay for as low as $12 or so, I paid $16 for a 10" that I carry in the truck just for general use when I'm out and about helping friends or at a swap meet. They may not be totally accurate to the .001" like an expensive one, but if it is within .002"-005" it's close enough for this type of work.

Howards Cams/Competition Products at www.competitionproducts.com has a very good selection of valvesprings at real good prices, you should take a look there.
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  #77 (permalink)  
Old 03-27-2011, 12:26 PM
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thanks for the reply's, I know this is a long thread and I am very appreciative of all the help i have gotten .

the wires are taylor 8.5 spiro pros ,the plugs are accel 0784 u grooves.

Yes Im pretty mad about not being told what springs i bought, I bought the heads used with good springs but didn't know the specs on them either and the shop replaced them because he said they were too stiff and put a set on from his shop and i never got a receipt for them but i paid for them !
later when i asked what they were he said "don't worry about it, it's not the springs ,it's the lifters causing the problem"
that turned into a heated argument because i said i had a right to know what i bought but it ended in a stalemate and loss of a friendship i thought i had.

maybe your right Cobalt that i shouldn't test it at high rpm again right now, it's been on the dyno this way so i figured it was ok to test at the track.
i'll have to pull the covers and buy some tools to measure everything.
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  #78 (permalink)  
Old 03-27-2011, 06:10 PM
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Yeah, that sure sounds dodgy, him not giving you a straight answer about the springs. And there's the possibility the springs that were removed may have been fine- after breaking in the cam w/lighter springs. You should have gotten the original springs back anyway- I suppose he kept them to sell to the next guy.

You can get the necessary tools to measure with for not much money. Eric mentioned cheap calipers and just a caliper will do most if not all of the measuring you need to do considering you don't need 0.00001" accuracy. Even splurging for a snap gauge set isn't a lot of money, considering you don't need Starrett-quality tools to do what you need to do, although good tools are a good investment if this will be something you are going to be doing more of.

A valve spring compressor would be the biggest investment, you might check w/the parts stores to see if they have a loaner.
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Old 03-27-2011, 07:14 PM
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given my experience with Accel brand products.. I would get rid of those plugs right of the bat, and get a set of basic copper plugs in there.

I used accel plugs once.. had all kinds of problems.. pulled them back out and found several that had failed in various manners. swapped them out for some basic AC Delco R45TS (chevy 350) and engine ran 100% better.
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Old 07-31-2012, 09:52 AM
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sapsZ28

go for the beehives with less mass it will allow your valvetrain to atain its max rev range and then some and it will do it alot quicker due to its lighter mass lunati and or comp cams make A1 quality beehive setups.

PS have you physically checked your springs to make sure one of you springs or any part of your valve train has not broken or loosened up ie rocker not torqued properly just a hunch
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Old 07-31-2012, 10:41 PM
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Accel Plugs and Taylor wires

I have read reviews on both of these products. It seems Accel used to make good products years ago. Do a search on best brand of spark plugs. I also read a thread on this website where a guy was using Taylor wires and was having issues with performance. Turned out to be a bad set of Taylor wires. Check them closely at night time for arcing. Maybe if you want better performance try a solid lift cam kit with matching springs. Maybe less money spent than carrying it to dyno shop. Look at the specs. on this: Howards Cams 112312-08S at Summit Racing.

Last edited by cdminter59; 07-31-2012 at 11:07 PM.
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  #82 (permalink)  
Old 08-01-2012, 12:48 PM
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well with the stutter gone my car runs good but i'm not sure if it is running the best it can but maybe it is and the dyno numbers are messing with my head and maybe those numbers are wrong.

I ran a best of 12.498 at 106.63 at the track.

383, 373 gears,3000 stall, 750 holley,mt drag radials.lunati voodoo cam kit 638-60105
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  #83 (permalink)  
Old 08-01-2012, 07:15 PM
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What is the car weight w driver? what is the et and MPH in the 1/8th?
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Old 08-01-2012, 08:38 PM
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5600 rpm stutter

You can check this website that cobalt327 referred me to. It has many calculators. Wallace Racing HP Calculator For 1/4 Mile . See how close you come to the dyno readings.
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Old 08-02-2012, 05:59 AM
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not sure of weight but i would say around 3500

my 60 was 1.758
1/8 was 7.912 mph 86.26
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  #86 (permalink)  
Old 08-02-2012, 09:56 AM
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5600 rpm stutter

the results of a 3500 lb. car is: Your HP computed from your vehicle ET is 318.92 rear wheel HP and 354.35 flywheel HP.
Your HP computed from your vehicle MPH is 305.83 rear wheel HP and 339.81 flywheel HP. Something must be way off on that dyno!
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  #87 (permalink)  
Old 08-02-2012, 02:47 PM
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so that sounds fairly close but does that mean my engine has something wrong and should be faster with the components it has now or is running correct with these parts cam etc..

I was hoping the engine when built with these parts would have made it closer to 450 hp at the flywheel but maybe i had unrealistic hopes.
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Old 08-02-2012, 06:52 PM
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5600 rpm stutter

I tried to find a cam similar to yours on Comp CamQuest. It would seem your missing about 50 HP. That cam produced 411 hp @ 5500 and 438 lbs of torque @ 4500 rpms. The cam is XR284H, 2300-6500 rpm range, lift .507/.510, duration advertised 284/296* Now on those dyno reading if they were an avg hp and torque these are similar 232/283.
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