Need 375+ RWHP naturally aspirated

rj95svt said:

If you want big power no doubt the 351 based engine is the way to go but for your 375 rwhp goal it isn't needed. You will deffinatly be better off with a aftermarket block if you plan to put nitrous on the engine. I think I would shoot for a 10.5:1 sompression ratio with aluminum heads and EFI and a good tune you should be ok on pump gas. I like the AFR 185's they are great heads and would more than likely meet your goal. I said I would use the TFS cnc'ed 185's mainly to try something a little different they are more expensive but if the flow numbers trickflow advertise are correct they are great flowing heads. I honestly think that 400rwhp would be possible with a combo like this. This is just a opinion though I haven't built a 331 or 347 stroker.

Here's a link to the TFS flow numbers
http://www.trickflow.com/product/fordcylinderheads/cnctwistedtrack/pr_cnctwisted_airflow.asp

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25thmustang said:

Nitrous is not like a turbo or SC. You will be more than fine with 10-11:1. I have seen 14-15:1 motors spray... Your not forcing more air into the combustion chamber, so no worries there!

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ninety15.0 said:

The problem with 375 rwhp N/A is that you arent going to have such a docile street car when you're done. To get that kind of power you are going to need a stroker with big HCI...and all the supporting mods. I think maybe you should shoot for 325-350 rwhp and then toss a 150 shot on there. 325-350 rwhp is still going to be a lot of fun on the street...and with a stroker it would be easy to do without revving the piss out of the motor! good luck man

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