New motor almost ready what do you guys think

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10-06-2013, 10:42 AM
93bird

New motor almost ready what do you guys think

block 383 clearanced and converted to 4 bolt splayed mains with arp studs
scat forged 383 crank
scat forged 6in. pro comp I beam rods
mahle forged piston & rings file fit for a 300 shot
205cc trick flow heads cnc ported by total engine airflow 2.02/1.60 valves 62 cc chambers to give 11.2 to 1 compresion ( same heads use in the gm high tech performance lt1 head shootout that put down 511hp with the 280xfi cam )
ported intake with hidden direct port fogger setup.
Cam speced by T.E.A. ground by comp cams dur. 236/248 lift 608/600 on a 114 lsa.
Still need rockers, timing set, elec water pump, and gaskets.
Already have long tube headers, 3600 s converter, built 700r4, and 410 gears with a mini spool ( I know the 10 bolt won't last long 9in. to come )
So what kind of power do you guys think it will make with out the nitrous.
10-06-2013, 08:25 PM
dawdaw

With the nitrous cam and low compression and large ring gap for spray I would say 500 max. why did you go at 11.2? and also what are you going to run for fuel? dedicated with race gas for the direct port?
10-06-2013, 08:55 PM
Puck

TEA does good work.

CR is a bit low and the cam is a bit small for NA, but I would guess around 500-525 flywheel. It will love the bottle though!

How much on spray depends on the brand and type of kit you use, some are rated flywheel and some RWHP.
10-06-2013, 09:04 PM
popo8

You think 11:1 is to low a cr?
10-06-2013, 09:32 PM
joelster

Quote:

Originally Posted by popo8

You think 11:1 is to low a cr?

For an n/a build, you can safely go much higher. There are guys running 12.5-1. You really have to have everything tuned well to run that high though. I wouldn't say 11-1 is low, but there is a little power left on the table by not going higher.
10-06-2013, 10:19 PM
popo8

Quote:

Originally Posted by joelster

For an n/a build, you can safely go much higher. There are guys running 12.5-1. You really have to have everything tuned well to run that high though. I wouldn't say 11-1 is low, but there is a little power left on the table by not going higher.

Understood... but this will add more longevity to the engine compared to a higher cr, right?
10-07-2013, 06:39 AM
RamAir95TA

Longevity is based on 90% builder, 10% parts. If the parts were prepared and assembled properly there's no reason the engine wouldn't last.
10-07-2013, 06:40 AM
joelster

Quote:

Originally Posted by popo8

Understood... but this will add more longevity to the engine compared to a higher cr, right?

Not really, it's all in the tune. I wouldn't worry about it being 11-1. When I say there is power left on the table by not going to say 12-1, we're talking 5-10hp, not like it's going to be down 50 or anything, lol. He'll get a lot of flack on the "other" board for not taking it right up the maximum though. My little 350 LT1 was running 9.4-1 and it seemed to have no problem stomping people. OP's car will be just fine at 11-1.
10-07-2013, 08:23 AM
Chopstix

should run very well.....I would venture to say mid/low 400s NA (depending on convertor) and nitrous numbers will depend on how much you spray :)

With that being said the car should run bottom 11s NA, no matter what the dyno says...FWIW my AFR headed 396 w/a 246/254 cam only dyno'd 380-390 whp but ran 11.10 @ 124 on a 1.6 60' with a nitrous gear and convertor
10-07-2013, 04:55 PM
93bird

Quote:

Originally Posted by dawdaw

With the nitrous cam and low compression and large ring gap for spray I would say 500 max. why did you go at 11.2? and also what are you going to run for fuel? dedicated with race gas for the direct port?

I wanted 12 to 1 but T.E.A. recomended a 62cc chamber for 11.2 and I figured they would know better than me.
I could have the heads milled but I don't know if 5-10hp is worth it? Yes a dedicated fuel system for spray.
10-07-2013, 05:40 PM
NightTrain66

would rather have a lil more compression and a lil larger cam but that should be a good running set up.

With a Yank or Vigilante 3600 stall and some drag radials I am sure it will feel pretty quick..

Lloyd
10-07-2013, 06:21 PM
93bird

Quote:

Originally Posted by NightTrain66

would rather have a lil more compression and a lil larger cam but that should be a good running set up.

With a Yank or Vigilante 3600 stall and some drag radials I am sure it will feel pretty quick..

Lloyd

What would the best compression be. I didn't want to go to big on the cam as it will see a fair bit of street time..
10-07-2013, 06:45 PM
popo8

Quote:

Originally Posted by RamAir95TA

Longevity is based on 90% builder, 10% parts. If the parts were prepared and assembled properly there's no reason the engine wouldn't last.

Thanku man...always learning.

Quote:

Originally Posted by joelster

Not really, it's all in the tune. I wouldn't worry about it being 11-1. When I say there is power left on the table by not going to say 12-1, we're talking 5-10hp, not like it's going to be down 50 or anything, lol. He'll get a lot of flack on the "other" board for not taking it right up the maximum though. My little 350 LT1 was running 9.4-1 and it seemed to have no problem stomping people. OP's car will be just fine at 11-1.

:thumbup:

Quote:

Originally Posted by NightTrain66

would rather have a lil more compression and a lil larger cam but that should be a good running set up.

With a Yank or Vigilante 3600 stall and some drag radials I am sure it will feel pretty quick..

Lloyd

THIS MAN^^^ knows top ends.....

MEMBER @ LTXtech.com
10-08-2013, 05:56 AM
joelster

Quote:

Originally Posted by 93bird

What would the best compression be. I didn't want to go to big on the cam as it will see a fair bit of street time..

The street manners are 90% in the tune. A huge cam with a spot-on tune will drive much better than a mild cam like the comp 503 on a stock tune.