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#1 |
Registered User
Join Date: Feb 2011
Location: Riverbank, Ca
Posts: 1,006
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Stroked 402?
Hey y'all. I have a 71 402 mildly stock. Has an edelbrock rpm intake and edelbrock 1407 750cfm carb right now. Also long tube headers. Was wondering how would I stroke this mofo. Is there any real benefit for a 402?
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Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750 |
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#2 |
Charlie Daniels w/ a Tq Wrench
Join Date: May 2009
Location: Statesville, NC
Posts: 1,570
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Re: Stroked 402?
A 454 crank will put it 436ish IIRC, as far as benefit, I guess it depends on what you want from it stump pulling torque, or a higher RPM screamer. Of course this also depends on many other variables.
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#3 |
Registered User
Join Date: Feb 2011
Location: Riverbank, Ca
Posts: 1,006
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Re: Stroked 402?
Besides the crank, what would need to be changed?
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Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750 |
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#4 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: Stroked 402?
Quote:
http://www.carcraft.com/techarticles...d/viewall.html
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#5 |
Registered User
![]() Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: Stroked 402?
Since you already have the 402, I would do a cam upgrade, dial in the ignition, and call it a day. If you are going so far as to stroke it, I would find a 454 block and stroke it, instead. Now you will have 489/496 cubes, and there is no substitute for cubic inches!
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Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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#6 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: Stroked 402?
If you are going to do anything just start with a 427/454 block and build from there. A stroker is going to need crank, pistons, rings, bearings and a camshaft anyway.
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#7 | ||||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Stroked 402?
Quote:
Quote:
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#8 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,963
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Re: Stroked 402?
concur - save the 402s!!! You might be surprised how much you'll like the 402 if you just add a cam/intake/carb. I like em stock but I understand the need for speed. Taint cheap though.
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#9 |
Senior Member
![]() Join Date: Feb 2003
Location: Gold Canyon Arizona
Posts: 4,337
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Re: Stroked 402?
true.. my 402 screams! but then again i get excited easly! hehehe
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1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey |
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#10 |
Registered User
Join Date: Feb 2011
Location: Riverbank, Ca
Posts: 1,006
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Re: Stroked 402?
I appreciate every input from y'all. I'm wanting to just do a fresh rebuild but add a little beef. Someone mentioned stroking it would be cool an I concurred. However, adding a cam to the existing setup will save me a lot of headache. If I were to add a cam to a stock setup (except the intake and carb I have) what cam would be recommended? While changing cam, what do you feel about changing lifters way same time. Stroke?
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Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750 |
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#11 |
Senior Member
![]() Join Date: Feb 2012
Location: chillicothe, illinois
Posts: 688
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Re: Stroked 402?
The fastest car I ever owend was a 396 in a chevelle turbo 350 with a vega stall converter and 373 gears. I raced alot and never lost once. I do have to say that I did build a 468 for the truck I am building now. I would keep the 402 add a forged crank 10to 1 big cam stainless valves and have some fun
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