Best street build
#2833037
10/15/20 01:42 PM
10/15/20 01:42 PM
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69coronetr/t
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69coronetr/t
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So I'm getting ready to start a new build, of course I want horsepower for my big 69 B body. I'm starting with what I have now , trickflow 240 heads,intake and 1 7/8 headers. Harland sharp rockers. So I'm gonna go with a solid lift roller. What is the best was to go on the bottom end? 400 block, 440 crank stroker? Also whats good rods,and how light are the good pistons nowadays? Hopefully only American made products i don't want anything made with overseas steel.
So anyone who has had success let's hear what you have to say ! Thank you
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Re: Best street build
[Re: ]
#2833048
10/15/20 02:09 PM
10/15/20 02:09 PM
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Joined: Jan 2003
Posts: 13,365 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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I'd do a 4.25" stroke RB 440 block w/ Molnar crank & rods and Diamond pistons.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Best street build
[Re: an8sec70cuda]
#2833053
10/15/20 02:31 PM
10/15/20 02:31 PM
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Joined: Aug 2011
Posts: 2,861 Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,861
Pattison Texas
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I like the 400 low deck 512cid, good luck on American made crank & rods
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: Best street build
[Re: ]
#2833068
10/15/20 03:23 PM
10/15/20 03:23 PM
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Joined: Jan 2003
Posts: 31,036 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,036
Oregon
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So I'm getting ready to start a new build, of course I want horsepower for my big 69 B body. I'm starting with what I have now , trickflow 240 heads,intake and 1 7/8 headers. Harland sharp rockers. So I'm gonna go with a solid lift roller. What is the best was to go on the bottom end? 400 block, 440 crank stroker? Also whats good rods,and how light are the good pistons nowadays? Hopefully only American made products i don't want anything made with overseas steel.
So anyone who has had success let's hear what you have to say ! Thank you The engine I built last year for my Coronet is the best street build I've seen so far on the dyno. 4.25 crank, 7.100 rods and pistons had a dish so final compression ratio was just a hair under 10:1. Trick Flow 240 heads with a port matched TF intake. I used a Holley Sniper since that is an easy way to get great street manners. The camshaft is key. I had Porter Racing Heads spec a custom hyd roller cam that gave me lots of torque down low but still pulled hard enough to make 600+ hp at the top.
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Re: Best street build
[Re: Cab_Burge]
#2833107
10/15/20 05:54 PM
10/15/20 05:54 PM
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Joined: Dec 2013
Posts: 4,674 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,674
Wichita
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4.25 crank, 7.1" rod in an RB 440. It all drops in with no grinding if you do the 2.20 Chevy rod journal.
I like Molnar stuff. Just so you know, everything originates in China at this level. Who finishes the final machine work and does quality control is what matters.
The Mahle pistons are nice pieces as well.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Best street build
[Re: viperblue72]
#2833183
10/15/20 09:47 PM
10/15/20 09:47 PM
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Joined: Aug 2003
Posts: 43,185 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,185
Bend,OR USA
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I did a 512 using a 4.25 440source crank, 6.7 scat rod and 1.12ch mahle piston thats only 453grams. I’m sure it was overthinking going with a longer rod for less angle and a lighter piston. The kits come with 6.535 rod and 1.32 piston. If this was a 400 block build you did good If it was a RB block then the 7.100 long rod is a little better on reducing cylinder wall loading and friction reduction from the thrust loads from the rods from the longer stroke
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Best street build
[Re: Cab_Burge]
#2833340
10/16/20 10:13 AM
10/16/20 10:13 AM
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69coronetr/t
Unregistered
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69coronetr/t
Unregistered
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Did you ever build the 400 stroker ,440 crank and bb chevy rods?
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Re: Best street build
[Re: GY3]
#2833345
10/16/20 10:17 AM
10/16/20 10:17 AM
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69coronetr/t
Unregistered
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69coronetr/t
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Ya but I've seen some really soft steel come out of china. Steel thats supposed to be t stock and compares to 1020 so all the best final prep in the world wouldn't have help in that peticular situation
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Re: Best street build
[Re: AndyF]
#2833349
10/16/20 10:20 AM
10/16/20 10:20 AM
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69coronetr/t
Unregistered
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69coronetr/t
Unregistered
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Thats interesting, how did you find that out ? Probably not the case with evey manufacturer. I've seen so much junk from China, broke camshafts, spindles, shafts, Rockwell ratings way below specs
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Re: Best street build
[Re: ]
#2833352
10/16/20 10:25 AM
10/16/20 10:25 AM
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69coronetr/t
Unregistered
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69coronetr/t
Unregistered
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Anyone ever do the the old 400 stroker with a 440 crank big block chevy rods and lightweight pistons?
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Re: Best street build
[Re: ]
#2833410
10/16/20 11:42 AM
10/16/20 11:42 AM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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470 cubic in. 400 low deck here with stock studded main caps, stock 413 forged off-set ground crank, 6.385 Chevy Eagle rods, home ported RPM's, 2" Super Comp fender-well's, Isky .680-.660 276-281 solid roller,12.1.1 comp, and used to run the Victor with a blended adapter but now sport a t-ram and two 650ish billet carbs. Easy 9's and totally street able even on 91 pump gas but I race it on VP-101 unleaded and 18+ years later and a couple of rebuilds, it's still going strong and still uses the same 727 trans, 4.10's and a 22 year old 8" vert.............
Last edited by Thumperdart; 10/16/20 12:20 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Best street build
[Re: Thumperdart]
#2833471
10/16/20 01:50 PM
10/16/20 01:50 PM
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69coronetr/t
Unregistered
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69coronetr/t
Unregistered
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Nice ,9 second quarter? Whats your car wiegh? Got any idea on the horsepower? I have everything but the rods and cam for that build! Thats what I'm leaning toward.
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Re: Best street build
[Re: ]
#2833518
10/16/20 03:02 PM
10/16/20 03:02 PM
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Joined: Aug 2003
Posts: 43,185 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,185
Bend,OR USA
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Did you ever build the 400 stroker ,440 crank and bb chevy rods? I have not try that long of a stroke in a low deck, I have used 4.300 stroker on several 400 blocks with good results with both 6.800 and 6.700 long BB Chevy type rods I would not put a 4.350 stroke or longer stroke crank in low deck block due to the piston skirts hanging out of the bottom of the bores with a 6.700 or longer rod You might try that longer stroke with a shorter rod in it though
Last edited by Cab_Burge; 10/16/20 03:45 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Best street build
[Re: ]
#2833520
10/16/20 03:08 PM
10/16/20 03:08 PM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Been an easy 9.79 @ 135+ in 2012 off the trailer running a bit lean and 2 years ago it went a 6.15 @ 112+ in the 1/8 w/a crappy 1.40 60 but then went back 2 weeks later and went a 1.34 w/tubes in the QTP's but lifted due to just a roll bar so that would of been a 6.0 something had I stayed in it. It will go 5.99 or better or it's for sale......Roughly 3050lbs or close to that.....
Last edited by Thumperdart; 10/16/20 03:08 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Best street build
[Re: ]
#2833559
10/16/20 04:30 PM
10/16/20 04:30 PM
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Joined: Jan 2003
Posts: 31,036 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,036
Oregon
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Anyone ever do the the old 400 stroker with a 440 crank big block chevy rods and lightweight pistons? Sure, we used to build a lot of 451 engines 20 years ago but there is no point in doing that much machine work on a stock 440 crankshaft these days. Just buy a new crank from Molnar or SCAT and be done with it.
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Re: Best street build
[Re: AndyF]
#2833673
10/16/20 10:21 PM
10/16/20 10:21 PM
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69coronetr/t
Unregistered
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69coronetr/t
Unregistered
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True I have the crank and pistons, but for what it cost for machine work I could probably by a crank . Do you remember what block mod you did I remember there was some grinding that had to be done for crank throw clearance? If you have any info that would be great. Skip White in Tennessee sells complete kits for Ford and chevy that may even be the way to go.
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