Slide rule.

HonkIfPartsFallOff · Post by **HonkIfPartsFallOff** » Wed Aug 13, 2008 10:08 pm

Any body have a moroso slide rule? how much HP/Tq does it say it takes for 3625lbs to go 139 mph in the 1/4 mile?

makinchips · Post by **makinchips** » Wed Aug 13, 2008 11:32 pm

whats the 1/8 mile mph?

jays64II · Post by **jays64II** » Thu Aug 14, 2008 2:24 am

rick...what's the rpm ? i took a stab at 7500 rpm and came up with 840 horse at the flywheel and 590 torque but i did not use the moroso slide rule. it's kinda a shot in the dark nor knowing the gear ratio , tire size ,trans type , conv. and such but i think it is within 10 horse and 10 ft/lbs.

Gameracing · Post by **Gameracing** » Thu Aug 14, 2008 6:09 am

A shitload, of course that's not a scientific analysis !!

HonkIfPartsFallOff · Post by **HonkIfPartsFallOff** » Thu Aug 14, 2008 9:17 am

jays64II wrote:rick...what's the rpm ? i took a stab at 7500 rpm and came up with 840 horse at the flywheel and 590 torque but i did not use the moroso slide rule. it's kinda a shot in the dark nor knowing the gear ratio , tire size ,trans type , conv. and such but i think it is within 10 horse and 10 ft/lbs.

6680 rpm. 3.73 gear and a 275/60-15 radial (27.9 inch) converter is at 7.2% slippage (based on data fom a LM-1/LM-3 combo)

Makinchips, the top end MPH of 139 is about 7 mph low, from where the1/8 mph is, 115.

Just curious what that moroso deal says, i think Oldhead has one/invented it? :devil:

jays64II · Post by **jays64II** » Thu Aug 14, 2008 10:40 am

o.k. rick....that info you gave me adds some torque to the first number i gave you. with horsepower staying the same at around 840 the torque is closer to 640 ft/lbs. it also says that at that trap speed , rpm , and tire size your gear ratio would be about 4.00. that gear may be hurting it just a tiny bit. maybe some 3.90 gears ? the conv. sounds like it's pretty close.

makinchips · Post by **makinchips** » Thu Aug 14, 2008 2:37 pm

@3700lbs calculates to 795hp or so

HonkIfPartsFallOff · Post by **HonkIfPartsFallOff** » Fri Aug 15, 2008 2:31 pm

jays64II wrote:o.k. rick....that info you gave me adds some torque to the first number i gave you. with horsepower staying the same at around 840 the torque is closer to 640 ft/lbs. it also says that at that trap speed , rpm , and tire size your gear ratio would be about 4.00. that gear may be hurting it just a tiny bit. maybe some 3.90 gears ? the conv. sounds like it's pretty close.

Actaully neeed to get rid of some gear. 3.73 is as numerically low as i could go with a 4 series carrier. hyd lifters are pumping up at 6680 to 6700 rpm, thus the reason why the car only picked up 24 mph on the top end. no one makes a 3 series spool.

makinchips wrote:@3700lbs calculates to 795hp or so

I guess thats respectable. is that with the moroso deal?

jays64II · Post by **jays64II** » Sat Aug 16, 2008 12:57 am

gotcha.

why not swap out for a baby solid flat tappet with a 110-112 lsa ?

Gameracing · Post by **Gameracing** » Sat Aug 16, 2008 12:38 pm

114 LSA on a motor that, shall we saw, isn't normally aspiirated. Don't need overlap when the manifold is pressurized.

jays64II · Post by **jays64II** » Sun Aug 17, 2008 2:53 am

i kinda figured it was for the 4 door all along.

HonkIfPartsFallOff · Post by **HonkIfPartsFallOff** » Sun Aug 17, 2008 11:04 am

jays64II wrote:why not swap out for a baby solid flat tappet with a 110-112 lsa ?

would kinda be a step backwards from the Hyd Roller it has now... It's my street car, i like a nice quiet, maintainence free valvetrain.

jays64II · Post by **jays64II** » Mon Aug 18, 2008 1:35 am

ahh......gotcha......i thought you had said hyd. flat tappet before. my bad.

makinchips · Post by **makinchips** » Mon Aug 18, 2008 4:21 pm

how much spring pressure ya run?

HonkIfPartsFallOff · Post by **HonkIfPartsFallOff** » Mon Aug 18, 2008 6:14 pm

145 on the seat, I forget the spec over the nose. I'm going to swap out the set of OE roller lifters for a set of the Comp Cam pro magnums. they operate with .000 to .004 preload, and are anti pump up. I'm going to shim the springs .015 to .030 and swap in a set of Ti retainers in the next few weeks... try to get another couple hundred rpm out of it.

70 EL CAMINO · Post by **70 EL CAMINO** » Mon Aug 18, 2008 8:33 pm

damnn.. 139... im still tryin to go for 119 lol if we race can i start at the 1/8th?

makinchips · Post by **makinchips** » Mon Aug 18, 2008 9:31 pm

more spring pressure 425/450lbs over the nose or so & you can limit the lifter travel yourself wshims that can be purchased from Macmaster Carr Ind supply.

HonkIfPartsFallOff · Post by **HonkIfPartsFallOff** » Tue Aug 19, 2008 5:36 pm

makinchips wrote:more spring pressure 425/450lbs over the nose or so & you can limit the lifter travel yourself wshims that can be purchased from Macmaster Carr Ind supply.

I have to get it apart and see where the springs are now, and see how much room i have to shim and what psi I can get them to. as for the lifters, iagree with what you said, but i'd still be relying on that little paper clip looking retaining ring if i shimmed them, and if i'm pulling the intake off to do lifters i'd rather just put new aftermarket lifters in that i feel are more up to the task.

GoneDragRacing.com

Slide rule.

Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.

Re: Slide rule.