Budget FE Build - Combos You are Happy with

[diegokid]

It was advertised a 425 HP at crank. Dyno runs gave 270RWHP and after a carb change and some other changes only went up to 290 RWHP and 345RWTQ. I'll move this to a new thread later after I check some other things.

[patrickt]

Originally Posted by diegokid

It was advertised a 425 HP at crank. Dyno runs ...290 RWHP and 345RWTQ.

425HP at the crank with no mufflers, water pump, or any other accessories. Knock off 55 or 60 HP for the pipes, etc., and whack another 20% for the drive train and you're down to 290....

[Dominik]

Originally Posted by patrickt

425HP at the crank with no mufflers, water pump, or any other accessories. Knock off 55 or 60 HP for the pipes, etc., and whack another 20% for the drive train and you're down to 290....

Please correct me, if I am wrong:
According to the above: 500Hp (80%) at the wheels result in 625Hp before the 20% drivetrain losses. Add losses for mufflers and accessories (55 to 60Hp) and the output at the flywheel is 680 to 685Hp.

Dom

[patrickt]

Originally Posted by Dominik

Please correct me, if I am wrong:
According to the above: 500Hp (80%) at the wheels result in 625Hp before the 20% drivetrain losses. Add losses for mufflers and accessories (55 to 60Hp) and the output at the flywheel is 680 to 685Hp.

Dom

Yes, I think to get 500 at the wheel you'll need to be putting out in the hi 600's when the engine is out of the car and sitting on the dyno running free... maybe more.

[diegokid]

As far as the 340 my brother said the cam was a mild cam, lift was about 478, set of headers and a 650 DP holley. Compression check on my FE came up with the high cylinders having 140PSI and the low at 125PSI, throttle was at WOT, all spark plugs removed and a 15 amp battery charger running and engine at operating temp160 - 170 degrees. Thats why we are going to check out some other stuff hopefully this weekend.