Recent content by Bewy

Maybe the lifter bore bushes are not perpendicular to the cam. Side loading, post #6.

The gap is going to depend on how powerful the ign system is. A turbo or blown engine is going to be better off with a CD ign system, such as the MSD 6,7 boxes etc. The dedicated ign coils that can only be used with these CD ign systems pack the ign punch needed with these engines.

First thing I would check: does the offset on the lifter line up with the side of the lobe that is damaged. If so, that could point to edge loading. That can be made worse by the lifter being loose[r] in the bore ; also the roller having too much play in the brgs [ or bush ]. All of these...

Turk, When you LEARN how an air bleed works, & how a HP number is produced, then you might be able to preach to others, most of whom are more knowledgeable than you...which wouldn't be that hard gauging from the BS you spew on this website. And how many patents do you have???????

If you run solid lifters, you can NEVER get two problems that hyd lifters can get: - they won't pump up & lose power - they won't collapse internally causing noise & power loss.

Use a 1/8" NPT plug. You can also drill a 1/8" hole & let the fluid drain. After draining, use a 1/8" pop rivet + silicon to seal the hole.

If you want to reduce the prod angle & the amount of lift that is lost, you could use sol lifters. They should be shorter because they do not have the internal hyd mechanism. Just lash them tight, 0.006-8" at operating temp.

I live in a hot climate & use 10w/60 oil. On a cold winters day, it flows like a '10' oil to get to the engine components quickly. On a hot 40*+ C day, when I come off the freeway with a heat soaked engine, I have 30 psi at idle.......not 10.....

There you go...... Direct from Holley...... Since they make the carbs, maybe, maybe just maybe, they know how their carbs work..... Air bleeds: 'DECREASNG the size of the main air bleeds....will pull MORE fuel creating a richer fuel/air mixture'. A smaller MAB also starts the system earlier [...

Make sure the met rod pistons are free to move up & down in their bores. As you load the engine, the piston springs should push the pistons UP so that the thin section [ enrichening ] of the m/rods are in the jets. Could be a broken spring, rare.

To answer the original question, changing only the carb from a 2 to 4bbl [ & a 4bbl intake ], I agree with the others about 15-20 hp. Very little if any benefit at the lower end. However, using a high signal carb that has annular pri boosters like the Edel 500 AVS2 would would probably add some...

I see the ignorance of Newbomb Turk rises to the top in post #107 like cream rising to the top. Larger main air bleeds will lean the mixture, not richen it. Same dope blames the carb he has on the dyno because he does not have the jetting parts on hand to jet it. It's the carb's fault! As I...

You have not given much info, to add to above. [1] If it has been a long time since the points have been checked/adjusted, then the ign timing will have retarded due to the points rubbing block wearing. [2] Carb choke adjustment [3] Same deal with the carb if it has a lot of mileage on it. Worn...

This could be many things, but I think more likely electrical [ ign ]. If points ign, check gap. Check dist cap & rotor for cracks, arcing. If elec ign, check p/up air gap. No gap or too big a gap can cause backfires. If the vac adv is used, after high mileage the p/up wires break from constant...

First, You must test the coil resistance with a DVM the ign off [ no power to the coil ]. If it reads open cct under this condition, then the coil is bad. Touch the meter leads together to make sure the meter goes to zero or close to zero [ meter is working ]. Secondly, you will not get an...