Hi every one
I have a 5.7 HEMI with a manley stroker kit
stroke 4.050
piston 3.937/-1.5cc F/T
the camshaft is howards 786965-13
623\600
281\287
113
my problem now is that i installed 6.4 heads with a 6.1 ported intake manifold and stock 6.4 poshrods
after the tune with a\f ratio 11.6 and spark 15 from 3500 to 6100 RPM everything is ok after it starts retarding timing and knocks
before on 5.7 stock heads and intake manifold it was a\f ratio 12.1 and spark timing 26 there was no problems and RPM goes to 6850
I did a Compression test with the 6.4 heads and it was around 10:6
I used 5.7 stock gasket
I thank the problem is with the poshrods what is the right length for my engine
I have a 5.7 HEMI with a manley stroker kit
stroke 4.050
piston 3.937/-1.5cc F/T
the camshaft is howards 786965-13
623\600
281\287
113
my problem now is that i installed 6.4 heads with a 6.1 ported intake manifold and stock 6.4 poshrods
after the tune with a\f ratio 11.6 and spark 15 from 3500 to 6100 RPM everything is ok after it starts retarding timing and knocks
before on 5.7 stock heads and intake manifold it was a\f ratio 12.1 and spark timing 26 there was no problems and RPM goes to 6850
I did a Compression test with the 6.4 heads and it was around 10:6
I used 5.7 stock gasket
I thank the problem is with the poshrods what is the right length for my engine