170 lbs compression

[gtxrt]

what do you guys think on a new rebuilt street engine with 170 lbs of cranking compression, to high or low or just about right. runs good with 35-36 total timing. 217-221 on 110 LSA with 107 centerline.

 

[440Coronet500]

Perfect compression for a street car, should make good power if the rest of the components are properly matched. 440'

 

[Gunner1]

Do you know your static compression?

 

[IQ52]

"runs good......"

So......let's go looking for trouble.

If it ain't broke don't fix it.

 

[gtxrt]

Do you know your static compression?

9.65

 

[Frank Mopar]

170 what my drag car is. 440ci. Runs between 7.10-20 all day long.

 

[Gunner1]

No ping, your golden. mine running 175. but mine pings. installing a new dist to replace the old worn out one. mine advances way too far.

 

[gtxrt]

No ping, your golden. mine running 175. but mine pings. installing a new dist to replace the old worn out one. mine advances way too far.

had mine recurved for 12* initial and not all in till 3600 rpms. total 35*-36* it also has 915 heads and has a total of 54 thousand quench with the 44 thousand head gasket and pistons 10 thousand in the hole.

 

[Gunner1]

I have speed Pro forged flat tops. Looks like 7 to 10 down the hole. Suppose to be 452 heads with a felpro gasket. I bought a bore scope to see what was inside. I set up my MSD for 12 and 34@3600 also. Going to have my new Isky 292 mega cam and lifters installed at the same time.

 

[gtxrt]

I have speed Pro forged flat tops. Looks like 7 to 10 down the hole. Suppose to be 452 heads with a felpro gasket. I bought a bore scope to see what was inside. I set up my MSD for 12 and 34@3600 also. Going to have my new Isky 292 mega cam and lifters installed at the same time.

seem like you have around 10:1 compression. what cam you running now

 

[Gunner1]

Unknown but it sounds mild.