Originally Posted by Sneakin Deacon
i was just stating what a smaller motor, with smaller blower and less airflow did through a heavy drivetrain, stock cast manifolds and 2.25" Y pipe. kinda to move you to figure out why your "purpose built 383" is not running too up to snuff. sure you can bandaid it with more boost and a little bottle, but your underlying issue will still remain.
we found out what else was broke... a plastic surge valve (mostlikely the boost problem)
and cracked the top of the intercooler...
the motor is state of the art i've had the heads flowed by the best people avaible and the block was built and machined buy some of the best people in the area... it was dyno'd on an engine dyno and made a little over 500hp at the crank(no blower)...the reason the numbers are not as good as they should be i cant answer, i know we copied exactly a persons car (not saying who) and it made 860whp(no spray) after a year of tuning, now last week was the first time the car had been 90% complete and we attempted to tune it (26 degrees of timing and we're aiming for 40).
to be honest the car made more then 400hp i was low ballin it. not trying to gain too much attention i'm trying to keep the car under the radar...just sitting there you would think anything of it, once you hear the loudest fuel pump in the would come on and the motor fire up... you know its not stock..
i'm still workin on getting my camera working then i'll post up the video
the motor has beed started 7 times since we installed the 42lb injectors and the refitted fuel rail. 4 of those 7 times were on the dyno... all 7 were on the same day...it made a bit shy of 500whp(not trying to brag, i've kept this project quiet for a long time)