New motor not performing well

[blackbirdws6]

I'm going to guess springs here without any other info. What lifters are you running?

[NightTrain66]

man, I am not sure when these were doen, who they were done for, etc. He mentioned he bought the car or engine with the heads on them and that is all the info I have.

IF I did thema nd did 2.08 valves they would have to be in the 205-210 cc range.

Throat diameter would be large enough, shortside would be large enough, pushrod pinch is the restriction on these heads.

Are there are stampings on the end of the heads with customers name, date, etc?

IF there is 110-130 lbs on the seat, that is a big problem to correct.

I would set them up at 155-165 lbs on seat and 400 lbs open if cast cam or you can go higher than 420 lbs open pressure if using billet cam.

Lloyd

[popo8]

Almost 400 rwhp... that does not sound bad to me. 1hp per cube at the rear wheels is nothing to laugh at... what were u expecting the numbers to be?

[devildog1]

Yes. When I bought them we talked about name and date. Sing 08.

[devildog1]

Well, it is only 18 hp more than my stock bottom, ported stock head and intake cam motor that I took out. Was expecting more than this...lol. 425 to 450. I also have a 300 shot of nitrous on it that is not quite hooked up yet and I want to get the rest right first.

[devildog1]

Here is a pic of the motor. I will also need to do away with this cold air setup. Any suggestion would be appreciated

[miller09]

I agree i would think it would make closer to 450whp

[popo8]

Ok... i was always under the impression that 1hp per ci at the flywheels was good... with the exception of solid roller high cr builds.

[devildog1]

Has any bought or seen on a camaro those 3" high ss hoods? If so do they give more room toward the front of hood at all?