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#1 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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Need help decideing what motor to build
I am having seconds thoughts about building a 454 for my truck, not enough high rpm capability. I want something that will pull you back in to the seat when u floor it and pull hard to about 6500. Heres some options i have been thinkin about.
377 small block 383 small block 454 big block (original plan) The tranny will be a muncie 4 speed, probably fairly high diff like 3.23 or 3.42, like i said before i want my power between 1750ish to 6 or 6500 rpm really opening up at like 3500. So whats everyone opinion????
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14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
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#2 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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I think any of the three built up decent will do like you want Me myself id rather have a 377 or 383 But im just a SBC guy.
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#3 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,552
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If you want to pull strong up to around 6500 that eliminates the big block unless you have a lot of money. I would lean towards a 383 with the 350 con rods.
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#4 |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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A 454 will turn 6500 no problem even with 2 bolt mains. Just run good rod bolts, steel crank and a good balance.
On the flip side, why would you need to spin it that high to begin with? 454's are stump pullers by design, and with that gear you will need a lower operating rpm engine to be happy in your heavy truck. Not trying to discourage you in any way, just some constructive questions ![]() My opinion, build the 454, steel crank, good truck rods/arp bolts, balanced, flat top pistons, closed chamber OVAL ports (049/702) install 2.19/1.88 valves and mild pocket bowl blend, Lunati solid 280/288 solid (ultradyne design) and roller upper valvetrain. Edelbrock rpm dual plane manifold, 800cfm carb of your choice. You could get away with a 1-7/8 primary tube header and 2.5 inch mandrell bent exhaust. This combo will push touque, and good mid rpm power all coming in by 3000, quitting about 6300. In a Chevelle with 3.73's this will see low 12's over 110 mph in street trim 3800 lbs.
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71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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#5 |
Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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go with the 454 dude.
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RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck |
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#6 |
Registered User
Join Date: Feb 2003
Location: Lakewood,Ca
Posts: 69
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If your looking for a lot of top end i would go with the 377 the 383 is more of a torquey motor with more on bottom then top.For street driving i think the the 383 would be best and it is lots of fun with the four speed,thats what i running in my truck right now.Big blocks are cool too but im more of a small block guy.
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1969 C-20,383 stroker,sm465,custom long travel front suspension,4 wheel disc brakes,35" pro comps...mods under way include: 4x4 conversion,and custom bumpers.future mods include: gear vendors od unit,and relocation of fuel cell. |
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#7 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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in summit racings add for their 383 stroker kit it says u have to use a small base circle cam for adequte clearance, what is that exactly?
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14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
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#8 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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67Shortie, what r u running for compression ratio, i dont really wanna go higher than 9.5to1, also what kinda idle does that cam give?
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14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
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#9 | |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Quote:
Plug your #'s in there and see what comes up for your ideal combo. This is very important on building a strong pump gas street engine. that cam I mentioned I do not run, but I do run the next larger cam in that grind 'family'. Mine is a 288-296 duration. It has a 110 lobe center, .610/.630 lift and .255/.262 at .050. Quite large for a street engine, but it does sound awesome at idle and low speeds and runs very well at all rpm ranges in it's powerband (3500-7000). the cam I mentioned for you will pull more vacuum than the cam I have and have a slightly better idle but have a lower powerband (3000-6500). the same cam in a street driven 4 speed 67 Chevelle with a 427 tri power pulled off 118 mph in the 1/4 not to long ago.
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71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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#10 | |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Quote:
__________________
71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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#11 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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So how do you tell which ones r stroker cams?
__________________
14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
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#12 | |
Green club
Join Date: May 2002
Location: Central CA
Posts: 1,059
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Quote:
__________________
71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln |
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#13 |
Registered User
Join Date: Mar 2004
Location: St. Louis, MO
Posts: 336
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You might want to rethink what you build goal is. It sounds like you want a 1/4 mile street pounder which will nail you to the seat. The other option is a machine which nails you to the seat at speeds over 60 mph with high top end and speed over 130 mph. They are both possible, but not with the same engine, transmission and rear end combination. If you want one you have to give something else up. Also, if cost is a factor the sbc is cheaper to build since parts are more readily available. Sounds like 67shortie has a great combination with what he specified. Good luck with the build, either way.
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#14 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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Sound's to me like 67shortie has a great build up plan that is a tested and work's very well..
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#15 |
Registered User
Join Date: Jun 2004
Location: paris, texas
Posts: 235
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Need Help Deciding What Motor To Build
I Think 67 Shortie Is Exactly Right . I Have About The Same Comboand It Runs 12.50s In The Quarter On Motor In A 4000 Pound Pickup Shifting At 6300 . My Total Investment In It Is About 2500.00 .67 Shortie Is Spot On . I Have Ran Small Blocks And After Running A Big Block I Would Not Go Back. These Motors Are As Tough As They Come . And The Torque Is Baddass . I Didnt Really Understand What Torque Meant Until I Ran One. My 2 Cents
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#16 | |
Registered User
Join Date: Oct 2002
Location: S.W. Michigan
Posts: 403
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Quote:
I haave gone both ways. I have had 327s, 350s, and a couple 383s. Then I went 454, and haven't looked back since. I am currently running a 454 that is bone stock, and with 3" exhaust exiting behind the rear tires It sounds mean. My advice to you....Big Block is the only way to go. Dan |
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