I tested without hood so in the real world the engine got hot air as the filter is under the hood.steve cowan wrote: ↑Fri Sep 16, 2022 5:29 pmI am going to dyno another 383 I am building by the end of the year and would like to test the 2 set ups.Erland Cox wrote: ↑Fri Sep 16, 2022 9:35 am This is what I used with the filter and top on the dyno. + 25hp versus bare carb.
A 4779 carb that I have ported the top of so it looks like a HP carb.
Erland
Erland,
On the road race vehicle is the drop base above the hood or below?
Next year I want go to a fibreglass/ carbon fibre hood and reverse cowl scoop for my car,one is for weight and the other is to get airfilter into a area not influenced by outside air due to vehicle speed travelling down the track.
I prefer that there is no under hood heat interference as well.
But there are trays that isolate the filter and take the air in front of the hood.
They fit fine on my gen 3 Camaro but the engine is to far back in my gen 4.
I am taking the engine out of the gen 4. It was a class engine with unported heads based on a ZZ4 engine with hot cam,
longer rods, lighter pistons and more compression.
It made 395 hp and 550Nm:s.
I am taking the engine out for rebuilding and I will replace the heads with ported ones.
Just the same L98 heads and change of manifold to a Performer RPM.
The car has a Richmond super T10 and from the lot of broken gear boxes that came with the car more torque needs a stronger box.
We have very tight tracks in my part of the country anyway.
But I will be testing with cold air on my rolling road.
Erland