MILD THUNDER

iTrader: (3)

Roller cams or flat tappet? Where did you get the small pulleys? I been wantin to try some. My bottom ends are all forged and rods, mains, and heads studded. I think i can handle the couple extra lbs with the aluminum heads too.

kreed

iTrader: (2)

Flat tappet cam. Comp cams PN 11-564-4. I may sell my small pullies. Their new in the boxes.

Kid Cumberland

I think I better check my boost gauge first. I dont start making any boost on the gauge until about 3500 RPM. Is this normal? Anyone have a good method for testing the gauge?
Thanks in Advance.

Griff

Thats pretty normal with a stock pulley. It should make a little boost when you start planing out and then the load decreases and boost pressure goes away.

Swamplizard

What plugs should we use Griff?
What A/F should we shoot for at idle and cruise and wot?
Thanks!

Griff

AC MR41T or NGK equivalent
Never checked AFR's on my 525SC. Tuned it by looking at spark plugs and adjusting air bleeds for idle quality.

ezstriper

maybe someone redid the engine with higher than stock compression pistons/milled heads/etc ? the factory pistons are no longer available( I needed some a while back)

Griff

Old thread that Swamp brought back

blue thunder

ngk vee power 9 heat range. 11.8-12 wot and 13.5 idle af. Been doing it many yrs with 9.5:1 and 6lbs on 177s.