383 with 59cc heads? SCR/DCR?
383 with 59cc heads? SCR/DCR? Hey guys, I'm going through a transition with the car and have quite a few different options going on in my head....
Keep current topend, but go with a forged TSP 383 bottom end. What would my DCR/SCR be and would it be optimal?
ETP 215 @ 59cc/Cometic .040
Fast 90(ported)
G5X3/114
This combo will run me about $6,000 after a new clutch and all the incidentals...
Or go with a LS7 setup and put myself somewhere in the $12,000 range?
All thoughts are welcomed and appreciated!
Alan
Keep current topend, but go with a forged TSP 383 bottom end. What would my DCR/SCR be and would it be optimal?
ETP 215 @ 59cc/Cometic .040
Fast 90(ported)
G5X3/114
This combo will run me about $6,000 after a new clutch and all the incidentals...
Or go with a LS7 setup and put myself somewhere in the $12,000 range?
All thoughts are welcomed and appreciated!
Alan
Originally Posted by wavrdr
Hey guys, I'm going through a transition with the car and have quite a few different options going on in my head....
Keep current topend, but go with a forged TSP 383 bottom end. What would my DCR/SCR be and would it be optimal?
ETP 215 @ 59cc/Cometic .040
Fast 90(ported)
G5X3/114
This combo will run me about $6,000 after a new clutch and all the incidentals...
Or go with a LS7 setup and put myself somewhere in the $12,000 range?
All thoughts are welcomed and appreciated!
Alan
Keep current topend, but go with a forged TSP 383 bottom end. What would my DCR/SCR be and would it be optimal?
ETP 215 @ 59cc/Cometic .040
Fast 90(ported)
G5X3/114
This combo will run me about $6,000 after a new clutch and all the incidentals...
Or go with a LS7 setup and put myself somewhere in the $12,000 range?
All thoughts are welcomed and appreciated!
Alan
Mahle -6cc or the Diamond -7cc....
I could always change the headgaskets. I calculated it out to be like low 13's on the SCR and mid-high 9's on the DCR which are both way up there...
I thought I made an error, so I figured I would make a post and gather some thoughts!
Alan
I could always change the headgaskets. I calculated it out to be like low 13's on the SCR and mid-high 9's on the DCR which are both way up there...
I thought I made an error, so I figured I would make a post and gather some thoughts!
Alan
Originally Posted by JRracing
I would try to keep what you have and build off of that. You have some really nice parts. Just get the short block to match it.
347 $3k
383 $4,250
402 $5k
427 $12k(full build with new dual disc clutch, minus $ recouped from selling off 346 parts)
Oh, I'm not made of money either, so the realistic side may get the better part of me here....
Originally Posted by wavrdr
Mahle -6cc or the Diamond -7cc....
I could always change the headgaskets. I calculated it out to be like low 13's on the SCR and mid-high 9's on the DCR which are both way up there...
I thought I made an error, so I figured I would make a post and gather some thoughts!
Alan
I could always change the headgaskets. I calculated it out to be like low 13's on the SCR and mid-high 9's on the DCR which are both way up there...
I thought I made an error, so I figured I would make a post and gather some thoughts!
Alan
no you cant... you have to keep your quench down... those CC"s on the heads are way too small.. go with some 65's minimum
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actually I was going to run a 383 with -7cc pistons and a .040 cometec with a 60cc head and an x3 on a 112. It came out to 11.8 and 8.9 repectively on the compression if I remember correctly. I got a 346 with the same setup and its pretty good now at 11.6 and 8.7. I'm hoping to make some good numbers.
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The Diamond pistons would net you 11:8 SCR and a 8.95 DCR. It's on the higher side, but could be ok if tuned properly. Your quench will be fine in the .033" to .043" range, so you could back off to a .045" or possibally a .050" gasket if you had to.
how far is his piston out of the bore?? im confused...
with my 63 CC heads, .010 out of the bore pistons, -8cc dish's and .040 gaskets my compression comes out to 11.83:1.... he has less dish, way smaller head CC's and everything else seems the same?? i cant use my calculator but seems like it will be well over 12:1 compression ration..
correct me if im wrong.. like i said i cant get on my calclulator.. ****** dial up
with my 63 CC heads, .010 out of the bore pistons, -8cc dish's and .040 gaskets my compression comes out to 11.83:1.... he has less dish, way smaller head CC's and everything else seems the same?? i cant use my calculator but seems like it will be well over 12:1 compression ration..
correct me if im wrong.. like i said i cant get on my calclulator.. ****** dial up
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Originally Posted by LostCauseZ06
how far is his piston out of the bore?? im confused...
with my 63 CC heads, .010 out of the bore pistons, -8cc dish's and .040 gaskets my compression comes out to 11.83:1.... he has less dish, way smaller head CC's and everything else seems the same?? i cant use my calculator but seems like it will be well over 12:1 compression ration..
correct me if im wrong.. like i said i cant get on my calclulator.. ****** dial up
with my 63 CC heads, .010 out of the bore pistons, -8cc dish's and .040 gaskets my compression comes out to 11.83:1.... he has less dish, way smaller head CC's and everything else seems the same?? i cant use my calculator but seems like it will be well over 12:1 compression ration..
correct me if im wrong.. like i said i cant get on my calclulator.. ****** dial up
Are you taking into account that your 408 is a 4.00 bore and a 383 is 3.905?
Originally Posted by LostCauseZ06
how far is his piston out of the bore?? im confused...
with my 63 CC heads, .010 out of the bore pistons, -8cc dish's and .040 gaskets my compression comes out to 11.83:1.... he has less dish, way smaller head CC's and everything else seems the same?? i cant use my calculator but seems like it will be well over 12:1 compression ration..
correct me if im wrong.. like i said i cant get on my calclulator.. ****** dial up
with my 63 CC heads, .010 out of the bore pistons, -8cc dish's and .040 gaskets my compression comes out to 11.83:1.... he has less dish, way smaller head CC's and everything else seems the same?? i cant use my calculator but seems like it will be well over 12:1 compression ration..
correct me if im wrong.. like i said i cant get on my calclulator.. ****** dial up
Originally Posted by Beast96Z
Cubic inches increases compression. If you used the same parts he's talking about, you'd have 12:4 SCR. He needs the smaller chambers to increase the compression to match what you can do with bigger chambers. In this situation, all things being equal, the 408 has a :5 point bump just from the cubes.
makes alot more sense now
thanks guys 