distributor

[Wamp]

Got engine now need electronic distributor. What is better, mechanical or vacume advance, your opinions are very welcomed.

 

[Jack]

Got engine now need electronic distributor. What is better, mechanical or vacume advance, your opinions are very welcomed.

For most street applications you'll get best combination of street performance across full rpm range using a dist that has BOTH vacuum and mechanical (centrifugal) advances ... like the one that came on your 74 ... that's a great distributor when it's in good condition. The later big cap HEI is as good a distributor as chevy ever used ($20-$40 junkyard, $110 -$225 new) ... but it won't drive the mech tach that a 74 has ... you'd have to pair HEI dist with a tach from a 75 thru 77 vette ($50-$100). Then there's the MSD tach drive ... but it MUST be paired with a MSD 6 or similar box ... total about $450/pair new. Your old tach drive distributor can be rebuilt ... and/or converted to electronic "pseudo-hei" w/Pertronix.

Your ignition choice should be guided by your present engine configuration and how you plan to use it.

I have more than few distributors ... several NEW HEI ... and some MSD stuff. Email me if interested. qaferret@aol.com
JACK:gap