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injector size on LS2 STROKED 402?

Old Feb 10, 2006 | 10:24 PM
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Default injector size on LS2 STROKED 402?

I have an engine built by Texas speed. I need to know what size injectors you guys think will be required. I was thinking svo 30lbs at first but i think larger is going to be needed . We are shooting for 520 rwhp

PRC STAGE 3 LS6 heads, flowed 323 @ 600
stroked 402
248/254 622/614 114LSA

harrop eight stack intake
11.5 to 1 compression

I would ask them but getting answers from them is not that easy , especially if you want to talk to Jason !!
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Old Feb 11, 2006 | 12:24 AM
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I would say 42lb injectors
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Old Feb 11, 2006 | 07:11 AM
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thats what i was thinking , ....anyone else ?
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Old Feb 11, 2006 | 07:41 AM
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42 lb for sure
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Old Feb 11, 2006 | 08:34 AM
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Originally Posted by datsbad
I have an engine built by Texas speed. I need to know what size injectors you guys think will be required. I was thinking svo 30lbs at first but i think larger is going to be needed . We are shooting for 520 rwhp

PRC STAGE 3 LS6 heads, flowed 323 @ 600
stroked 402
248/254 622/614 114LSA

harrop eight stack intake
11.5 to 1 compression

I would ask them but getting answers from them is not that easy , especially if you want to talk to Jason !!
I would be a little upset if I was paying someone to build a motor for me and couldn't take the time to answer a few questions for me.
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Old Feb 11, 2006 | 08:37 AM
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Originally Posted by Black02SS
I would be a little upset if I was paying someone to build a motor for me and couldn't take the time to answer a few questions for me.
+1

I am gonna go with 42 Lb SVO's on mine.
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Old Feb 11, 2006 | 09:40 AM
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I am using the 42 lbrs Lucas types on mine.

I am producing 485 rwhp and don't ever get over 60% DC. Which is what I expected but these injectors tune so well at idle I was happy to go a bit big for my application.

Perry
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Old Feb 11, 2006 | 01:22 PM
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Right 42's are nice cause they leave you room to grow and on a 402 they are absolute cake to tune.
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Old Feb 11, 2006 | 03:09 PM
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Originally Posted by Black02SS
I would be a little upset if I was paying someone to build a motor for me and couldn't take the time to answer a few questions for me.
Count me in on that too...
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Old Feb 11, 2006 | 06:46 PM
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Originally Posted by Perry Kincy
I am using the 42 lbrs Lucas types on mine.

I am producing 485 rwhp and don't ever get over 60% DC. Which is what I expected but these injectors tune so well at idle I was happy to go a bit big for my application.

Perry
That's why I use on mine.
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Old Feb 11, 2006 | 09:56 PM
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Originally Posted by Black02SS
I would be a little upset if I was paying someone to build a motor for me and couldn't take the time to answer a few questions for me.
yeah well i wont even go there with that one ....but my thoughts exactly . at one time i was told 30lbs
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Old Feb 11, 2006 | 10:59 PM
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Anohter vote for the 42's. Here's a hint - check out ebay.
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Old Feb 12, 2006 | 03:09 AM
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I've seen 505 RWHP on an N/A 402 with yellow top 32's.
The 42's are a better choice as the duty cycle was getting up there.


EC
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Old Feb 12, 2006 | 10:55 AM
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Originally Posted by datsbad
yeah well i wont even go there with that one ....but my thoughts exactly . at one time i was told 30lbs
Although I did the 42s, 30 #ers aren't that far off, since the SVOs are rated at 39 psi and we run at about 58 psi. So those that are math whizzes can recalculate, but I think they are about 36-37 lbs in an LSX fuel situation.

Perry
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Old Feb 12, 2006 | 12:02 PM
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42's will leave you room to grow, the DC should be nice on them, and leave you room for nitrous down the road if you decide to go this way. Just make sure you have a good fuel system also.
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Old Feb 12, 2006 | 02:22 PM
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I got the 42lbrs SVO in my 402 thats being built.
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Old Feb 16, 2006 | 08:35 PM
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I am running SVO 42 lb injectors with 70% duty cycle at 6800 rpms.
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Old Feb 17, 2006 | 09:44 AM
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Originally Posted by hellbents10
Right 42's are nice cause they leave you room to grow and on a 402 they are absolute cake to tune.
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Old Feb 17, 2006 | 11:54 AM
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Flow Rate Calculator

Helpfull tool to give some consideration for questions like this....
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Old Feb 25, 2006 | 08:54 PM
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I have the SVO 42s, green tops.... They were easy to tune, for my tuner anyway.
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