496 Dyno
Posted: Wed Aug 31, 2011 4:53 pm
Bought this car on eBay; http://cgi.ebay.com/ebaymotors/ws/eBayI ... 0759043006
Best of everything! the guy says. 734HP 496 yadda yadda yadda
* 496 CUBIC INCH STROKER 4 BOLT MAIN ( 734 H.P. )
* EAGLE STEEL CRANK
* EAGLE RODS
* SRP DOME PISTONS
* LUNATI CAM 724-724
* CRANE ROLLER ROCKERS
* MANLEY VALVES AND PUSH RODS
* CAST HEADS PORTED ANS POLISHED
* MATCHED PORTED INTAKE
* 1050 DOMINATOR
So the first thing I do? Take it to West Bend (wi) Dyno. Car puts up Max 358 rwHP at 6500 rpm 322 # torque at about 5600 rpm. < see attached >
Car has a turbo 400 trans with a 5400 stall converter, 4:56 dana 60 rear. Air in the room got pretty blue after a hard pull but it doesn't obviously blow the blues at idle or 'normal' operating rpms.
Now the motor was built at least 8 years ago. It's been run hard I'm sure over that time. I've been told it probably needs to be 'freshened up', but to me that torque curve or lack thereof is an indication either the ad was BS in the first place, or something else is seriously wrong. I've never seen torque just fall away like that.
Planning to run the car through the rest of the season to get used to it, then pull the motor and trans to have them gone through. I've been told C&S performance is a good outfit here in Milwaukee. Will probably have them pick up the motor sometime late October.
So what kind of feedback to I leave this seller? Clearly some of what he's saying is BS, and some just stretches the truth. Typical used car salesman I guess. I'm ok with the deal overall - know it'd cost more to build this from scratch than what I paid, but it certainly isn't *exactly* as described, ya know?
Anyway, open to advise on what to do with the motor etc. Car has been a drag car since 74 and is clean. Can't wait to take it to the track and find out for myself if it launches straight etc.
Thanks,
John
Best of everything! the guy says. 734HP 496 yadda yadda yadda
* 496 CUBIC INCH STROKER 4 BOLT MAIN ( 734 H.P. )
* EAGLE STEEL CRANK
* EAGLE RODS
* SRP DOME PISTONS
* LUNATI CAM 724-724
* CRANE ROLLER ROCKERS
* MANLEY VALVES AND PUSH RODS
* CAST HEADS PORTED ANS POLISHED
* MATCHED PORTED INTAKE
* 1050 DOMINATOR
So the first thing I do? Take it to West Bend (wi) Dyno. Car puts up Max 358 rwHP at 6500 rpm 322 # torque at about 5600 rpm. < see attached >
Car has a turbo 400 trans with a 5400 stall converter, 4:56 dana 60 rear. Air in the room got pretty blue after a hard pull but it doesn't obviously blow the blues at idle or 'normal' operating rpms.
Now the motor was built at least 8 years ago. It's been run hard I'm sure over that time. I've been told it probably needs to be 'freshened up', but to me that torque curve or lack thereof is an indication either the ad was BS in the first place, or something else is seriously wrong. I've never seen torque just fall away like that.
Planning to run the car through the rest of the season to get used to it, then pull the motor and trans to have them gone through. I've been told C&S performance is a good outfit here in Milwaukee. Will probably have them pick up the motor sometime late October.
So what kind of feedback to I leave this seller? Clearly some of what he's saying is BS, and some just stretches the truth. Typical used car salesman I guess. I'm ok with the deal overall - know it'd cost more to build this from scratch than what I paid, but it certainly isn't *exactly* as described, ya know?
Anyway, open to advise on what to do with the motor etc. Car has been a drag car since 74 and is clean. Can't wait to take it to the track and find out for myself if it launches straight etc.
Thanks,
John