Will my Trick Flow 170cc intake runner 61cc chamber work well with 408ci?

Pokageek

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#1

• Feb 4, 2007

• #1

I never run my car down a track and enjoy light to light driving. These have to be better than a stock 351 head for example. Any power estimations with this head? On nitrous with a 100HP shot (with real dumb timing) I made 350rwhp with my 306 on the dyno and 376 rwtq (if i remembe correctly) with these heads.

I want to hit over 400rwhp - no question. Will I miss my goal?

 

Grn92LX

Fidanza Man!

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#2

• Feb 4, 2007

• #2

A guy over on corral runs 10.30's @ 128ish using unported twisted wedges on a n/a 408. They have a good v/j but no porting or anything.

400rwhp shouldn't be a problem at all. You'll need to mill them down to get the compression up and obviously new springs.

 

Pokageek

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#3

• Feb 4, 2007

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Thanks. Why new springs though? They only have like 3 k miles on them. Sorry if dumb question. also what is V/J?..oh , valve job..Don't they come that way though?

 

D

DocZG

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Feb 5, 2007

#4

• Feb 5, 2007

• #4

you need new springs if you bought them assembled from trick flow, because i belive they can only handle .500 lift and you would need more than that. v/j is valve job

 

Pokageek

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#5

• Feb 5, 2007

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DocZG said:

you need new springs if you bought them assembled from trick flow, because i belive they can only handle .500 lift and you would need more than that. v/j is valve job

Click to expand...

Ok. Thanks!

 

Redsnk95

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#6

• Feb 5, 2007

• #6

302 parts will get you 302 power. Send em off to get some work done.

 

BlackVert

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Feb 6, 2007

#7

• Feb 6, 2007

• #7

Grn92LX said:

A guy over on corral runs 10.30's @ 128ish using unported twisted wedges on a n/a 408. They have a good v/j but no porting or anything.

400rwhp shouldn't be a problem at all. You'll need to mill them down to get the compression up and obviously new springs.

Click to expand...

+1