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6800 rpm 421 SBC Combo

General engine tech -- Drag Racing to Circle Track

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77cruiser
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Re: 6800 rpm 421 SBC Combo

Post by 77cruiser » Wed Jan 08, 2020 12:55 pm

Eric & Chad both sell fully ported Profilers. I have a set that I got from Eric, nice heads but the D port Ex. makes header fitting a pain.
Jim

BLOCKMAN
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Re: 6800 rpm 421 SBC Combo

Post by BLOCKMAN » Wed Jan 08, 2020 1:16 pm

77cruiser wrote:
Wed Jan 08, 2020 12:55 pm
Eric & Chad both sell fully ported Profilers. I have a set that I got from Eric, nice heads but the D port Ex. makes header fitting a pain.
Check with Tom @ 3V Performance as Tom CNC machines his heads all in house Chad farms all his CNC work out BIG differance LOL

https://3vperformance.com/

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Re: 6800 rpm 421 SBC Combo

Post by trmnatr » Wed Jan 08, 2020 4:34 pm

n2omike wrote:
Wed Jan 08, 2020 9:58 am
BLOCKMAN wrote:
Wed Jan 08, 2020 9:39 am

If I was going to build a HYD roller engine I would go to the Johnson Roller lifters those are very quite and you can adjust them as a anti pump up lifter and no problem.

Going from solid roller springs to Hyd roller springs is not cheap as I did that last year with the 427 SBF but its what the customer wanted. Minus .050 locks, retainers and spring cups instead of stacking up shims.
Thanks for the advice.
And, how do you adjust the lifters as 'anti pump up'? I read about where you adjust them with only 1/4 turn of preload... and also where you adjust them to where they are pretty much fully collapsed.

As for the HR springs being expensive, the small diameter PAC springs are a $77 upgrade straight from AFR over the springs that come stock on the 220 heads... which makes the HR cam a very affordable option.

He was also asking about Pro-Filer heads. You guys have any experience with those?

Thanks!

The springs again:
AFR-8019*
Hydraulic Roller
Red or Pink Stripe
1.270 OD
.645 ID
155 lbs. @ 1.810
448 lbs. @ 1.160
Premium Grade Chrome Silicon
PAC Racing Springs
Dual Spring
1.080 450 .650 7000-7200
I adjust them to zero lash just like a solid roller lifter, one cylinder at a time then fire it up and adjust them running. I have tall and short valve covers cut out. Adjust them with your fingers on the rocker body and as you loosen it you will feel it then hear it, tighten down adjustment nut slowly until you feel zero bumping in the rocker body = zero lash, then I tighten the adjuster from 12 O’clock to about 1:00 to 1:30 listening to the motor and lock it down

I built a 383 with 11:1 compression and Pro-Filer 210’s with 2.08”/1.600” with bowl and short turn work with a Dart intake that fit like crap but it’s what he had, pistons were 343grams with 1.2/1.5/3mm ring pack, used 3/8” .080” wall pushrods with LGM shaft rockers with Crane 1.55” spring with 285 seat pressure and 750 open, exhaust were 285/680 pressures, TH350 with 4.56 gear just under 3200 pounds, ran 10.0’s. Same combo with higher compression ran down into 9.80’s. I also sold all the pieces to a guy to build a 406 and coached him to build the engine, he didn’t fill it or have it plate honed ($$ wise) and 3100 pound g body ran a bunch of 10’s with a powerglide

The 383 camshaft
290/306 @.020”
260/268 @.050
184/183 @.200
.715”/.625”
106 lobe center 104 ICL in this motor (backed it up 2)

406 camshaft
298/314 @.020
268/276 @.050
191/190 @.200
.715”/.666”
106 lobe center 103 ICL
www.autotransdesign.com www.gzmotorsports.com
www.cranecams.com www.prosystemsracing.com
www.hardblok.com
Please say a prayer for all that serve and gave all to serve this Holiday and everyday!

trmnatr
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Re: 6800 rpm 421 SBC Combo

Post by trmnatr » Wed Jan 08, 2020 4:40 pm

BLOCKMAN wrote:
Wed Jan 08, 2020 1:16 pm
77cruiser wrote:
Wed Jan 08, 2020 12:55 pm
Eric & Chad both sell fully ported Profilers. I have a set that I got from Eric, nice heads but the D port Ex. makes header fitting a pain.
Check with Tom @ 3V Performance as Tom CNC machines his heads all in house Chad farms all his CNC work out BIG differance LOL

https://3vperformance.com/
Chad still designs the ports and uses pro port castings from Pro-Filer. Didn’t know Tom was doing his own heads, good guys that make good power are offering more cnc ported stuff.
www.autotransdesign.com www.gzmotorsports.com
www.cranecams.com www.prosystemsracing.com
www.hardblok.com
Please say a prayer for all that serve and gave all to serve this Holiday and everyday!

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Re: 6800 rpm 421 SBC Combo

Post by Orr89rocz » Wed Jan 08, 2020 10:05 pm

BLOCKMAN wrote:
Wed Jan 08, 2020 1:16 pm
77cruiser wrote:
Wed Jan 08, 2020 12:55 pm
Eric & Chad both sell fully ported Profilers. I have a set that I got from Eric, nice heads but the D port Ex. makes header fitting a pain.
Check with Tom @ 3V Performance as Tom CNC machines his heads all in house Chad farms all his CNC work out BIG differance LOL

https://3vperformance.com/
Nothing wrong with that. Chad hand ports everything to develop the port then has it digitized and cnc profiles made. The heads work

n2omike
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Re: 6800 rpm 421 SBC Combo

Post by n2omike » Wed Jan 08, 2020 10:20 pm

BLOCKMAN wrote:
Wed Jan 08, 2020 1:16 pm

Check with Tom @ 3V Performance as Tom CNC machines his heads all in house Chad farms all his CNC work out BIG differance LOL

https://3vperformance.com/
Thanks... I clicked on the link, and the only heads I saw that he offered were Dart. I'm not a Chevy guy, so unless ProFiler uses a Dart casting, I don't see anything.
trmnatr wrote: I adjust them to zero lash just like a solid roller lifter, one cylinder at a time then fire it up and adjust them running. I have tall and short valve covers cut out. Adjust them with your fingers on the rocker body and as you loosen it you will feel it then hear it, tighten down adjustment nut slowly until you feel zero bumping in the rocker body = zero lash, then I tighten the adjuster from 12 O’clock to about 1:00 to 1:30 listening to the motor and lock it down
Thanks for the tip on adjusting HR lifters to keep them from floating. I assumed as much to keep them from floating... I guess they don't collapse too much with spring pressure and rpm? I did see some Johnson Short Travel HR lifters for SBC at the 3V site (sold out) for $510. I guess these are an attempt to be the best of both worlds.

Do you guys see much difference in power on similar engines with Hydraulic vs. Solid Roller lifters?
I'm on the fence, as I've always used solid lifters.

Thanks!

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Re: 6800 rpm 421 SBC Combo

Post by BLOCKMAN » Thu Jan 09, 2020 3:42 am

n2omike wrote:
Wed Jan 08, 2020 10:20 pm
BLOCKMAN wrote:
Wed Jan 08, 2020 1:16 pm

Check with Tom @ 3V Performance as Tom CNC machines his heads all in house Chad farms all his CNC work out BIG differance LOL

https://3vperformance.com/
Thanks... I clicked on the link, and the only heads I saw that he offered were Dart. I'm not a Chevy guy, so unless ProFiler uses a Dart casting, I don't see anything.
trmnatr wrote: I adjust them to zero lash just like a solid roller lifter, one cylinder at a time then fire it up and adjust them running. I have tall and short valve covers cut out. Adjust them with your fingers on the rocker body and as you loosen it you will feel it then hear it, tighten down adjustment nut slowly until you feel zero bumping in the rocker body = zero lash, then I tighten the adjuster from 12 O’clock to about 1:00 to 1:30 listening to the motor and lock it down
Thanks for the tip on adjusting HR lifters to keep them from floating. I assumed as much to keep them from floating... I guess they don't collapse too much with spring pressure and rpm? I did see some Johnson Short Travel HR lifters for SBC at the 3V site (sold out) for $510. I guess these are an attempt to be the best of both worlds.

Do you guys see much difference in power on similar engines with Hydraulic vs. Solid Roller lifters?
I'm on the fence, as I've always used solid lifters.

Thanks!
Give Tom a call I believe he does have the Profiler heads as well

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Re: 6800 rpm 421 SBC Combo

Post by 67RS502 » Mon Jan 13, 2020 4:09 pm

I did Johnson lifters on my last SBC, only on the dyno, but they are quiet.
If youre considering doing a HR, buy quality lifters, .135” P-rods, and spring pressure minimum 180/450,
and it should turn 7000 with not too aggressive of a lobe.
Preload ¼ turn minimum, but 1 turn is good.
Use correct oil for breakin.
If using different lifter types on the same lobe the HR lifter will make more power, (with a stable valvetrain),
since the SR lifter needs lash. You would have to add some duration to make up the diff, so 2 different cams are needed to compare.
Stick with a quality valvetrain on an HR and it will rev and make power on a street deal over 7000.
Watch the P-rod pinch on the afrs or do the profilers, but heads (and intake) need to be done by someone competent.
67 camaro
girly rollers on pumpgas:
420 - 641hp BretBauerCam, 1.39, 9.79 @ 137.5
383 - 490hp 224/224, 1.56, 10.77 @ 124.6
502 - 626hp 252/263, 049s 1.44, 10.08 @ 132.7
62 Nova cruiser
383/200-4R/12-bolt w 373s
224/224 HR cam
1.57 10.97 @ 121.2

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