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@Tonymustang302 I believe they are no longer available. Part number is M-19515-M50
@Jet One Duane, I don't anticipate being able to measure any difference. I'm hoping it will lower temps on Cylinders #4 & #8, but any decrease there will likely increase temps on the other cylinders. Next engine teardown and Leak-down testing will tell.

Meanwhile, Got the Headers installed and got the Powertrain back in the car today:

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741
1,075
TX
Hey Nick - what's your break in procedure since the car isn't street legal. Do you do a full break in on the dyno?
 
How well are you able to get the corner weights equal. No cross but at each front and rear axle?
@steveespo I didn't pay much attention, as I just wanted to get it right pre dyno and I'll fine tune with ballast, now I have the Dyno results. Last season front left was 87lb higher than right and rear left was 102lb higher than right at 50% Cross weight.

Car dyno'd up 3 rwhp peak and average rwhp after rebuild so I have to add an additional 24lb of ballast. The (much) better news is torque was WAY up (anywhere from 8-26 ft-lbs from 3,000-6,400rpm)
 

steveespo

Lord knows I'm a Voodoo Child
Moderator
4,008
1,924
Exp. Type
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Cookeville TN
@steveespo I didn't pay much attention, as I just wanted to get it right pre dyno and I'll fine tune with ballast, now I have the Dyno results. Last season front left was 87lb higher than right and rear left was 102lb higher than right at 50% Cross weight.

Car dyno'd up 3 rwhp peak and average rwhp after rebuild so I have to add an additional 24lb of ballast. The (much) better news is torque was WAY up (anywhere from 8-26 ft-lbs from 3,000-6,400rpm)
Thanks Nick, Those numbers are similar to what Ernie and I saw. He thought we could get left/right closer to equal but with my ballast on the left side no way.
Steve
 

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