first hotrod build

thinking through the fuel system and reading a two line feedback system is preferable to a single line feed. I have a stock style 32 tank with a single feed. is using a tee before the fuel pump for the return from the regulator acceptable for my situation. I will be using a 600 performer carb with an 8 lb 110 gph carter electric fuel pump. later I may upgrade to a 750 holley or comparable carb.
 
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use loc-tite on the threads and a cam button and cam button retainer plate , if its either the early style , with out the step nose and retainer plate design or later design
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266loc.JPG


I've seen a good many chevy cams ,
but I have yet to see one where they failed to thread the timing chain gear bolt holes, obviously you could drill and tap that cam core,
but I would ask for a replacement simply because if the manufacturers quality control team missed that, check on the cams fabrication,
theres a chance they also missed other quality control checks, clearances etc.
(but as I stated earlier I think the smarter route would be swapping it out, or getting a refund and shopping else-ware )

http://garage.grumpysperformance.com/index.php?threads/cam-degreeing.9010/#post-32126

http://garage.grumpysperformance.com/index.php?threads/cam-gear-and-timing-marks-etc.724/#post-1021

http://garage.grumpysperformance.com/index.php?threads/degree-in-that-cam-correctly.27/#post-35

http://garage.grumpysperformance.co...ng-cam-and-shifting-the-lca.10553/#post-44949

http://garage.grumpysperformance.co...hanics-of-adv-ret-a-camshaft.4532/#post-12048


http://garage.grumpysperformance.com/index.php?threads/cam-spacer-buttons.1793/
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plastig8.jpg
 
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Refresh my memory, who made the camshaft? Wouldn't hurt to repost the specs, so we
don't have to go back and search.
 
howards hydraulic oe roller 272/278 advertised duration 112 lsa. working with dd2000 this should fit my build well peak hp at 6000 and a virtualy flat torque curve from 2000 to 5500. 2000 rpm 449 5500 rpm 460 4000-4500 493 torque. have been honest with input to dd2000 hope it is close to accurate.
 
your 100% correct ,
they missed threading the cams bolt holes
have you been able to contact the manufacturer?
what did they say?
keep in mind, if you return it, they may simple run a tap through the bolt holes,
too thread that cam core, and return it too you,
which effectively will just eat a couple weeks time vs you doing the same thing



I've used the first three manufacturers for about 80% of my builds
crane (386)310-4875

crower 619.661.6477

erson 800-641-7920

lunati..662-892-1500

ISKY 323.770.0930

clay smith 714-523-0530

herbert cams 714-491 -2267
 
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will be calling howards and competition products tomorrow morning about it. I can tap the threads if necessary but only as a last measure. this is one interesting build.
 
I went with 110 I may loose a couple lbs torque and a few hp but I think it should be a flatter curve. Once together I am shure it will take a while to learn to use what I have got, it is a lot more than what I started out to build before reading all I found here.
 
on working out fuel system I found the aftermarket tank has a top fuel pickup with return that is pluged. bad thing is fittings are 1/4" npt looked for a 6 bolt 3/8 pickup with return and can't seem to find any.
 
If your current fuel tank or fuel lines can,t keep up with the engines demands, can you remove the current plate and fittings and drill and soldier in a larger dual fuel fittings
fuelplate1.jpg

http://www.tanksinc.com/index.cfm/p...t_id=100/category_id=167/mode=prod/prd100.htm


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http://www.jegs.com/c/Fuel-Carbs-Intakes_Fuel-Cells-Fuel-Tanks/10297/10002/-1

http://garage.grumpysperformance.co...es-restrict-fuel-flow-rates.12859/#post-66683

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FuelFlowDiagram02a1.jpg


http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/

http://garage.grumpysperformance.com/index.php?threads/how-big-a-fuel-pump-do-you-need.1939/

http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-regulators.635/

http://garage.grumpysperformance.co...ss-fuel-pressure-regulators.12776/#post-65958

http://garage.grumpysperformance.com/index.php?threads/input-on-electric-fuel-pump-selection.10664/

http://garage.grumpysperformance.com/index.php?threads/fuel-line-sizing-return-vs-feed.3067/
 
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I can make the fuel system but have a few questions. engine build should be a bit below 500hp with the ability to go well above with cam and carb change, using a carter external electric 105 gph fuel pump @ 8 psi with 3/8 npt fittings. So feed will be 3/8 -6an should the return be the same or 1/2" -8an. As for fuel lines for carburation how is aluminum or copper tubing. On return feed systems I see on the threads has one feed line to the bypass regulator and one return line, but all bypass regulators I have seen have in, out, and return so do you plug the out port or deadhead to the carb with the output.
 
the return can be either 6AN or 8AN, ,8an is ideal , 6AN would would ok in almost all set-ups
stainless steel fuel lines are ideal, aluminum, acceptable if they are not located where subject to constant vibration, or frequent moisture baths

I would NOT dead head a fuel pressure regulator
this diagram below is about ideal


FuelFlowDiagram02a1.jpg


worth reading carefully
http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-regulators.635/

http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/

http://garage.grumpysperformance.com/index.php?threads/bypass-fuel-pressure-regulators.12776/

http://garage.grumpysperformance.com/index.php?threads/how-big-a-fuel-pump-do-you-need.1939/

http://garage.grumpysperformance.com/index.php?threads/fuel-line-sizing-return-vs-feed.3067/

http://garage.grumpysperformance.co...selection-design-for-500-hp-fuel-system.7787/
 
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Well it seems that I fail on measuring cam to crank spacing. I assume that the cam gear should fit to the cam without needing to force it to line up so I will call cloyes and find out if I can just get a stock timing chain with the 5 under set I just bought and fix my error.
 
made a filling spacer for my airgap manifold. need to raise the carb 4" so my plans are to use a 2" 4 hole spacer and milling another out for a 2" divided spacer giving a larger plenum size. since I need the added height I felt making it a true dual plane would be better. what are your thoughts on this modification. it just slides in and out now but could be crimped in and a bit of rtf to seal it in although the milled slot holds it so it cant fall out.
 

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