Which IM is best for what kind gains

From what I have read, the GT350 IM is best suited for higher rpm hp gains. Which IM's make low to mid range hp gains if any? I want to make more hp, by staying NA. I don't want to have to get into the higher rpm range to see the best benefit from power adders. Basically, how to make NA power without have to rev the crap out the engine all the time.

Stock GT IM. Can't beat it.

F150 IM its cheap too

gearhead2685 said:

F150 IM its cheqp too

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^ This

JC'sGT5.0 said:

From what I have read, the GT350 IM is best suited for higher rpm hp gains. Which IM's make low to mid range hp gains if any? I want to make more hp, by staying NA. I don't want to have to get into the higher rpm range to see the best benefit from power adders. Basically, how to make NA power without have to rev the crap out the engine all the time.

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You can't have our cake and eat it too. If you want NA power, aside from the usual suspects, you have to spin it. RPM's are power. Period. Put on a CJ or GT350 and rev it to 8k or don't touch it.

Na power comes with rpm. If you want low end power/torque, you're going to need a blower.

LOL how can people say power comes with rpm.

To a certian degree i agree however this is a small cube engine so the question is WHERE in the rpm band do you want the power.

Then pick what Intake manifold youd like accordingly.

Yes this engime will make more hp in the higher rpm with say a gt350 or CJ intake manifold, however it will make MORE TQ downlow with a F150 manifold at the expense of HP and top end at the top of the rpm band.

Sorry saying you have to spin ot or dont touch it is only half the story. There is more it than just RPM........

gearhead2685 said:

LOL how can people say power comes with rpm.

To a certian degree i agree however this is a small cube engine so the question is WHERE in the rpm band do you want the power.

Then pick what Intake manifold youd like accordingly.

Yes this engime will make more hp in the higher rpm with say a gt350 or CJ intake manifold, however it will make MORE TQ downlow with a F150 manifold at the expense of HP and top end at the top of the rpm band.

Sorry saying you have to spin ot or dont touch it is only half the story. There is more it than just RPM........

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LOL, power absolutely comes from RPM. You obviously need proper supporting mods but that is 100% correct.

Buy an LS.

Just get a Whipple!

If you want to maximize power down low then your options are:

1)Keep it stock- Free
2)F150 Manifold- 60-100ish (the range is dependent on how you plug the hole)
3) Edel Brock Victor II IM -$1200ish
https://www.cjponyparts.com/edelbrock-intake-manifold-victor-ii-5-0l-2011-2017/p/EDL7180/
4) Forced Induction/Nitrous

V8EATR said:

You can't have our cake and eat it too. If you want NA power, aside from the usual suspects, you have to spin it. RPM's are power. Period. Put on a CJ or GT350 and rev it to 8k or don't touch it.

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You think the stock cams will pull to 8k? Don't think so. Get a set of comp stage 3 NA NVS cams and that stock GT intake will sing to 7300+ rpm. Right around where the comp cams max out.

WildHorse said:

You think the stock cams will pull to 8k? Don't think so. Get a set of comp stage 3 NA NVS cams and that stock GT intake will sing to 7300+ rpm. Right around where the comp cams max out.

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What do you mean by "pull"?

-make peak power at 8k? -no

-make more power "under the curve" (in each gear) by raising the rev limit, thus resulting in faster acceleration with the higher redline vs shifting at the lower stock redline? -of course.

V8EATR said:

LOL, power absolutely comes from RPM. You obviously need proper supporting mods but that is 100% correct.

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I said it was only half the story.....:frusty:

Depends on where in the rpm band you want to make it.....

V8EATR said:

You can't have our cake and eat it too. If you want NA power, aside from the usual suspects, you have to spin it. RPM's are power. Period. Put on a CJ or GT350 and rev it to 8k or don't touch it.

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This sort of talk is what originally kept me from getting a GT350 manifold, I didn't feel like changing out the OPG to be able to rev it to 8k.

Came across several threads where people were reving their GT350 manifolds to 7500 RPM and still getting great gains compared to stock.

If you can safely rev it to 8k go for it, but its not a necessity. There's plenty of gains even at 7500 to make it worth it.