L92 Swap On A 6.0. Who Has Done It?

[dirt track racer 81]

what heads did you have on before? compression would be 10.7 milling them .015. right now im about 11.8 according to United Engine and Machine Co.

[skeet]

what heads did you have on before? compression would be 10.7 milling them .015. right now im about 11.8 according to United Engine and Machine Co.

i had the 706 patriot stage 2 heads which put the cr over 12. when patrick g spected my cam he mentioned the cr being 11:1 with the ported l92 ( ls3 ) heads, 11:8 isnt bad if you ask me, i was still able to run 93 on the 12:5 cr, this info came from richard if not mistaken i talked to him before i put the 5.3 heads on.


what gasket size did you calculate that at?

[dirt track racer 81]

i had the 706 patriot stage 2 heads which put the cr over 12. when patrick g spected my cam he mentioned the cr being 11:1 with the ported l92 ( ls3 ) heads, 11:8 isnt bad if you ask me, i was still able to run 93 on the 12:5 cr, this info came from richard if not mistaken i talked to him before i put the 5.3 heads on.


what gasket size did you calculate that at?

with my heads now im at 11.8. did some reading on tech last night, guys were milling them .030, even spdc had them this way iirc. Milling .030 would give me a 65cc chamber,with a -4cc valve reliefs, 4.060 bore .040 gasket heard of some going .030, 4.030 cylinder bore, gives me a 10.98:1 comp ratio. if i use .030 gaskets it gives me 11.27

[skeet]

with my heads now im at 11.8. did some reading on tech last night, guys were milling them .030, even spdc had them this way iirc. Milling .030 would give me a 65cc chamber,with a -4cc valve reliefs, 4.060 bore .040 gasket heard of some going .030, 4.030 cylinder bore, gives me a 10.98:1 comp ratio. if i use .030 gaskets it gives me 11.27

good info yeah i went on tech myself and did some searching lol... those numbers are for your 370 though correct?


gonna be a nice setup foresure

[dirt track racer 81]

good info yeah i went on tech myself and did some searching lol... those numbers are for your 370 though correct?


gonna be a nice setup foresure

yea, that was using that calculator i posted. on whether how accurate it is i dont know..I just dont want to part ways with my polished vic jr intake.

[skeet]

yea, that was using that calculator i posted. on whether how accurate it is i dont know..I just dont want to part ways with my polished vic jr intake.

all honesty i wouldnt, from what i gathered the vic jr likes bigger bore motors, i ran one on a stock bore 364 CI, i felt it robbed alot of lowend, i personally think with a bigger bore there wouldnt be any worries. plus you'll have a great advantage if you decide to go nitrous, direct port youre build seems like it would be very well built to turn 7k-7500 rpms and with the vic jr would work well for a high rpm motor, if youre plans are to turn it up that high


i may have missed it but your 370 is being built for NA ?

[dirt track racer 81]

all honesty i wouldnt, from what i gathered the vic jr likes bigger bore motors, i ran one on a stock bore 364 CI, i felt it robbed alot of lowend, i personally think with a bigger bore there wouldnt be any worries. plus you'll have a great advantage if you decide to go nitrous, direct port youre build seems like it would be very well built to turn 7k-7500 rpms and with the vic jr would work well for a high rpm motor, if youre plans are to turn it up that high


i may have missed it but your 370 is being built for NA ?

I have a fast 4150 1375 cfm plate. Im going to running a single stage big shot plate but running a dual stage 250 shot, maybe some more down the road. on the dyno i was still making power at 7k and yet to peak. Before i had ls1 heads and pro prod intake and 230/226 cam. I actually gained 20lbs tq with the bigger cam and vic jr. The throttle response is very snappy with the fast plate and accelerates very nicely. Only thing I got to run was gt500 that I walked away from. Once I get a trans back in it, Ill slap it back on the dyno and run it up to 7500-7600 and see if and how fast power drops off