Engine Question

[coralcoupe1993]

Thanks for the reply. I do not race my car and it will never see the track, so aside from the occasional torque on the tranny from power shifting, it is strictly a street car.

If you arent racing or going to the track, just buy a fresh crate from summit.

[04yellowcobra]

Rush,

Your tranny should be fine!

If the motor you are putting together doesn't make 350 rear wheel I would be pretty upset.

Later

[madmaxin22]

102K ON my stock t-5,,, thats seen a blower for about 3k that was around 400hp at the motor and the current setup now that is around 340 at the motor and it still shifts perfect, no grinds, etc and thats w/ drag radials and a very rare trip to the track

[RUSH2112]

If you arent racing or going to the track, just buy a fresh crate from summit.

Thought about a crate motor but I think they are more expensive than to just build. Besides ,I dont have $5,000 right now. I will build this engine over the next year as funds become available.

[RUSH2112]

Rush,

Your tranny should be fine!

If the motor you are putting together doesn't make 350 rear wheel I would be pretty upset.

Later

Only 350? I was hoping to at least push 400

[Viper_ed]

Only 350? I was hoping to at least push 400

You might at the crank, but not at the tires!

[coralcoupe1993]

Here ya go. http://store.summitracing.com/partde...5&autoview=sku

I wouldnt buy a crate but here ya go.

[RUSH2112]

Here ya go. http://store.summitracing.com/partde...5&autoview=sku

I wouldnt buy a crate but here ya go.

Thanks. I did look at that crate motor awhile back. You think I would not get as much for $4000 if I built a stroker myself?

[coralcoupe1993]

Thanks. I did look at that crate motor awhile back. You think I would not get as much for $4000 if I built a stroker myself?

You wont get the experience of learning how to do it......not worth the crate! Truthfully, after you get heads, good roller rockers, good rotating assembly, machine work I think you will be around the same price.

[RUSH2112]

You wont get the experience of learning how to do it......not worth the crate! Truthfully, after you get heads, good roller rockers, good rotating assembly, machine work I think you will be around the same price.

I think your right. I price out all the parts and aside from the machine work, it is $3000 for a stroker build.

But the $4000 crate motor doesnt include the TB or the induction.

So $4000+ for a crate motor that puts out 345hp (which is probably crank)
or $3000+ for a 347 stroker motor that puts out 350RWHP, plus I get the satsfaction of seeing/helping to build the motor.

[Pure Stock]

Only 350? I was hoping to at least push 400

What will you choose for the cam, intake, T.B., and exhaust to compliment the AFR 185's?

[madmaxin22]

it would take one hell of a combo to get near 400rwhp out of a 347....those are 351 stoked #'s.... bad88ttop has a bad 347 setup w/ a systemax intake and fox lake ported TW heads... i'd shoot for 350 at the wheels and you will be happy with the results esp. for a street car

[RUSH2112]

What will you choose for the cam, intake, T.B., and exhaust to compliment the AFR 185's?

Well I'll list what I want to get and you tell me what you think. Also, If I have the heads ported a little bit, would that help?

Exhaust - will reuse current setup. BBK longtube ceramics, O/R h-pipe, flowmaster catback

Cam - not sure yet. might go with the XE266 something or other, or possibly a custom grind. I want to have a heavy lope with an aggresive idle

Rockers - 1.71 roller rockers

Intake - probably not the best choice, but a polished ford racing 'cobra' intake (possibly with a port job). I know their are much better intakes out their, but I want to slowly chrome out the engine.

TB - not really sure about a model, but at least 65mm or higher. Also want to get a 70mm or higher MAF calibrated w/ 30lb injectors

[Pure Stock]

it would take one hell of a combo to get near 400rwhp out of a 347....those are 351 stoked #'s.... bad88ttop has a bad 347 setup w/ a systemax intake and fox lake ported TW heads... i'd shoot for 350 at the wheels and you will be happy with the results esp. for a street car

460FWHP/347c.i.d.=1.325 FWHP per c.i.d. 460FWHP/15% loss through a T-5 (estimated loss) = 400RWHP.

1.325 FWHP per c.i.d. is an "achievable" value for a "street engine". With a well thought out "combo" (I'm not getting into a pissing match over cylinder head choices here) the 347 can have good street manners and produce the numbers he expects on pump gas.

[RUSH2112]

460FWHP/347c.i.d.=1.325 FWHP per c.i.d. 460FWHP/15% loss through a T-5 (estimated loss) = 400RWHP.

1.325 HP per c.i.d. is an "achievable" value for a "street engine". With a well thought out "combo" (I'm not getting into a pissing match over cylinder head choices here) the 347 can have good street manners and produce the numbers he expects on pump gas.

Thanks for the numbers. I would appreciate your opinion on heads. I always thought that AFR were the best, but I agree that the right 'combo' is always the best way to go.

[Pure Stock]

Well I'll list what I want to get and you tell me what you think. Also, If I have the heads ported a little bit, would that help?

Not sure of the amount of material that is present in the AFR 185 ports. So, I can't tell ya if porting them would be a viable option.

Exhaust - will reuse current setup. BBK longtube ceramics, O/R h-pipe, flowmaster catback

Cam - not sure yet. might go with the XE266 something or other, or possibly a custom grind. I want to have a heavy lope with an aggresive idle

Rockers - 1.71 roller rockers

Intake - probably not the best choice, but a polished ford racing 'cobra' intake (possibly with a port job). I know their are much better intakes out their, but I want to slowly chrome out the engine.

TB - not really sure about a model, but at least 65mm or higher. Also want to get a 70mm or higher MAF calibrated w/ 30lb injectors

The exhaust: What size are the primary tubes on the long tubes?

The cam: custom is always a great way to match the combo. The xe266 is too small for a 347 application. That is a 302 part for sure.

The rockers: 1.6 ratio "should" suffice "if" the cam is selected correctly.

The intake: The cobra intake will produce an abundant amount of low and mid range power BUT that intake may become the limitation in your quest for 400 RWHP

The T.B.: 75mm T.B. and a M.A.F. equal to that size or larger.

[RUSH2112]

The exhaust: What size are the primary tubes on the long tubes? I believe 1 5/8. not sure though

The cam: custom is always a great way to match the combo. The xe266 is too small for a 347 application. That is a 302 part for sure.

The rockers: 1.6 ratio "should" suffice "if" the cam is selected correctly.

The intake: The cobra intake will produce an abundant amount of low and mid range power BUT that intake may become the limitation in your quest for 400 RWHP Yes, i realize that the intake will be my 'weakest' link

The T.B.: 75mm T.B. and a M.A.F. equal to that size or larger.

Answers in red above

[Pure Stock]

Thanks for the numbers. I would appreciate your opinion on heads. I always thought that AFR were the best, but I agree that the right 'combo' is always the best way to go.

Not sure about being able to port the 185's. I am not aware if there is any material left to increase port volume. I do not think there is a "best" head. It's all about the combination. I know it sound cliche, but it is the truth. I have seen many TFS Twisted Wedge combo's that produce horrible numbers(if that is what appeals to you) and then again I have seen AFR headed small blocks that were lethargic as well.

Being able to appease a budget and being satisfied with the results sometimes is never realized. Getting caught up in numbers can take the fun out of it. My best advice to you would be to do some research on the corral(did I just say corral). There are a couple of 347's that produce 400 @ the tires. You may be able to base your combo from what somebody has already researched and proven.

Hardcore50.com is also a great place to lurk around and take in what is said. This is a premier site that offers zero tolerance for ignorance. I have learned quite a bit from the people over there!

[RUSH2112]

Not sure about being able to port the 185's. I am not aware if there is any material left to increase port volume. I do not think there is a "best" head. It's all about the combination. I know it sound cliche, but it is the truth. I have seen many TFS Twisted Wedge combo's that produce horrible numbers(if that is what appeals to you) and then again I have seen AFR headed small blocks that were lethargic as well.

Being able to appease a budget and being satisfied with the results sometimes is never realized. Getting caught up in numbers can take the fun out of it. My best advice to you would be to do some research on the corral(did I just say corral). There are a couple of 347's that produce 400 @ the tires. You may be able to base your combo from what somebody has already researched and proven.

Thanks for the tips. Your right. If I am only good at one thing, it is research and I do it very well. I can try to find someone who has what I 'want' and see what they put out, then find someone who 'puts out' what I want and see what they got. I am in no hurry, just gathering data for now.

[Pure Stock]

Something that may interest you.

http://airflowresearch.com/articles/article110/A-P1.htm