Halp With Engine Selection For Muh Notch!

[Mr. Rustypwnz]

Ok, so I would like to do a cool engine swap into the fox. I already build a ton of modulars. Those are getting old. So I was thinking, go extreme with a SBF. This time do it right, how Ive always wanted to build one. Last one I built made around 340-345rwhp, with a 306. That was a very simple engine nothing custom or crazy. So I would like for this one to do around 400 or so.

Specs:
4.125 bore
289 crank (2.85" stroke I think?)
Dome pistons (13.1)
High ports
vic jr intake.
custom cam
Make it live at 7500+

Sound do-able?

 

[hoopty5.0]

sounds like fun. I brought up de-stroking once and it got shot down. But don't you need light weight valves and some serious valve springs for a high winding motor?

 

[srtthis]

id ditch the high ports and go with the 11R head

 

[84Ttop]

I don't see the sense in de stroking the motor. at 4.125 bore I'm guessing you'll be using an aftermarket block? 7,500 in a aftermarket block is child's play. my 438 lived at 8400 and never faulted on the dyno

 

[srtthis]

I don't see the sense in de stroking the motor. at 4.125 bore I'm guessing you'll be using an aftermarket block? 7,500 in a aftermarket block is child's play. my 438 lived at 8400 and never faulted on the dyno

yea that RPM is nothing... the 450" nitrous motor has been to 9500 and so has the little 347 turbo motor

 

[A5literMan]

I personally never saw the value of 9000rpm destroked engines. Maybe circle track/certain drag applications but anything that sees any street time...bleh. My buddy ran a 301 Chevy that turned 8000 rpm with a 4speed/4.56 gear. It ran low 12s with slicks and was a dog below 5000rpm. Maybe with forced induction but not n/a. You'll need to gear the sh it out of it. I'd go with at least a 3.25" stroke(big bore 347)

 

[Mr. Rustypwnz]

id ditch the high ports and go with the 11R head

Never heard of this head. Specs?

 

[Mr. Rustypwnz]

I don't see the sense in de stroking the motor. at 4.125 bore I'm guessing you'll be using an aftermarket block? 7,500 in a aftermarket block is child's play. my 438 lived at 8400 and never faulted on the dyno

Yeah, aftermarket. I would like to do 8000rpm. But that would be the most I would go. 8500+ would prolly be way out of my league

 

[NIKwoaC]

Man you cray cray. Forget de-stroking anything. It would be like Peyton Manning playing with an eye patch on. It’s still the same old Peyton, only he’s screwing up his depth perception for no other reason than to just look like a pirate.


Do a 347/363 with one of those new fancy ITB intakes and Comp’s new high-rev hydraulic roller lifters. Then cut a hole in the hood so everybody can see the beautiful induction!

 

[stykthyn]

Rolls Royce Merlin

 

[mikestang63]

408 windsor gets my vote

 

[stykthyn]

View attachment 182148

 

[hoopty5.0]

It'd be different. I wanna see it done, just like when everyone told @NIKwoaC he was crazy for putting monster heads on a little 302.

Those are the cars I love to see in the Super Stock class at the NHRA races. Massive wheelies and the motor is screaming the whole way. I dig it.

 

[hoopty5.0]

View attachment 182147

Who makes that?

 

[stykthyn]

Who makes that?

http://www.borlainduction.com/ThrottleBody/351w_cross_ram_fr.html

 

[srtthis]

Never heard of this head. Specs?

New trick flow heads 11° valve angle

 

[A5literMan]

Never heard of this head. Specs?

New TFS race ported 205cc heads with 2.08x1.60valves,PAC .650 lift springs,titanium locks and retainers,etc. very nice head

 

[NIKwoaC]

It'd be different. I wanna see it done, just like when everyone told @NIKwoaC he was crazy for putting monster heads on a little 302.

Those are the cars I love to see in the Super Stock class at the NHRA races. Massive wheelies and the motor is screaming the whole way. I dig it.

Yea but the difference is, I didn't build anything bigger because the stock bottom end was all that my budget allowed... I did not spend money to intentionally go smaller. I'm certainly not one to knock anybody who wants to be a little different, though, and @Mr. Rustypwnz is a fellow big head/small engine connoisseur, so I know whatever he builds, it should be entertaining.

 

[stykthyn]

Monster turbo esllinger headed svo engine.

 

[CarMichael Angelo]

I think the bottom of the engine is a " so what?" regardless of what you do. A 327;331;347;363 looks like a 302 anyway.

A high revving " A/MP type destroked engine revved past 8000 RPM just breaks sh it more catsclysmically than one that failed at 6000, all while failing to make any power below 4500 RPM.

What makes an engine " different " visually is how you feed it. But how you feed it is the key. It's nothing now a days to see rows of centrifugal S/C 5.0's all lined up at a show,..so nothing special there. Most turbo'd combinations have the turbo located somewhere beneath all of the I/C piping, so again,......yawn.

if I was gonna do something different in an engine build, I'd either inject it using multiple throttle bodies, or some other form of exoctic looking induction

or I'd turbocharge an inline six cylinder.

But then again, that's just me.