PurpleBeeper
Well-Known Member
I have some Edelbrock E-Street #5093 (84cc) heads on the way for a PURE STREET (almost) 440 I'm putting together. I will be running a very mild hydraulic flat-tappet cam in it (like a comp cams XE274 or "hemi grind" purple shaft).
Question #1:
I just saw this note on the Edelbrock site. I'm running a direct connection (stock style) electronic ignition distributor. Will I have any clearance issues? If so, what do I do?
INSTALLATION NOTE: Deck thickness: 5/8", pushrod diameter: 3/8". Vacuum advance distributor may not clear cylinder head.
Question #2:
What are some good, relatively inexpensive (less than $800/set) 2618 alloy forged pistons, for occasional nitrous use, with 0.990" wrist pins, that are as light as possible? I'm targeting in the 9:1 or 9.5:1 static compression range since I want to be sure it can run on 91-octane gas (when not running nitrous) with the 84cc cylinder heads. It's a stock stroke 440. I'd prefer valve reliefs for the larger valves (2.14"/1.81") "just in case" I ever put a larger cam in this motor. What pistons do you think I should look at? Is 9-9.5 to 1 a reasonable compression ratio target?
Question #3:
What are some flat-tappet hydraulic cams I should consider? I know I need to keep the cam very mild since I plan to run 2.76 rear end gears and a 4spd. This motor is intended for long-distance cruising.
THANKS FOR YOUR SUGGESTIONS!
Question #1:
I just saw this note on the Edelbrock site. I'm running a direct connection (stock style) electronic ignition distributor. Will I have any clearance issues? If so, what do I do?
INSTALLATION NOTE: Deck thickness: 5/8", pushrod diameter: 3/8". Vacuum advance distributor may not clear cylinder head.
Question #2:
What are some good, relatively inexpensive (less than $800/set) 2618 alloy forged pistons, for occasional nitrous use, with 0.990" wrist pins, that are as light as possible? I'm targeting in the 9:1 or 9.5:1 static compression range since I want to be sure it can run on 91-octane gas (when not running nitrous) with the 84cc cylinder heads. It's a stock stroke 440. I'd prefer valve reliefs for the larger valves (2.14"/1.81") "just in case" I ever put a larger cam in this motor. What pistons do you think I should look at? Is 9-9.5 to 1 a reasonable compression ratio target?
Question #3:
What are some flat-tappet hydraulic cams I should consider? I know I need to keep the cam very mild since I plan to run 2.76 rear end gears and a 4spd. This motor is intended for long-distance cruising.
THANKS FOR YOUR SUGGESTIONS!