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Search found 368 matches

by Old School
Fri May 22, 2020 3:41 pm
Forum: Engine Tech
Topic: SBC Tunnel Ram
Replies: 31
Views: 1459

Re: SBC Tunnel Ram

ClassAct wrote:
Fri May 22, 2020 9:53 am
If you select the cam timing based on the TR and spend the money on carbs with someone who knows what they are doing (@MarkWhitener) the TR will out perform everything.
What would you do different for cam timing on a TR compared to a good single plane and dominator?
by Old School
Fri May 15, 2020 4:28 pm
Forum: Engine Tech
Topic: Flat tappet vs roller
Replies: 38
Views: 2017

Re: Flat tappet vs roller

Good oil with either type of cam is a must for me. For flat tappet cams I use Crower cam saver lifters and Gibbs Driven break in oil. Then use their Hot rod oil or VR racing oil. THIS. Lucas has a very similar oil, their break-in 30wt. Very similar additive package, and can be purchased through pla...
by Old School
Fri May 08, 2020 12:40 pm
Forum: Engine Tech
Topic: Hyd Roller SBC bracket drag car
Replies: 91
Views: 2770

Re: Hyd Roller SBC bracket drag car

Your friend is running a bracket car, not a class car. He can dial any number he wants. If his car is consistent as you say( consistent to me means the car can make 20 runs and they all will be between 11.600 and 11.619) why would he want to take a chance on losing that for a tenth or two. If a brac...
by Old School
Sat Apr 25, 2020 2:05 pm
Forum: Engine Tech
Topic: 454 engine noise
Replies: 7
Views: 485

Re: 454 engine noise

Are you getting oil to the rocker arms?
by Old School
Wed Apr 08, 2020 2:37 pm
Forum: Engine Tech
Topic: Tight timing chain
Replies: 26
Views: 2069

Re: Tight timing chain

Sounds like you have found your problem. I have experienced the cam gear being as much as .030 in front of the crank gear. That will cause binding also. I machined the necessary amount off the cam gear behind the bearing so they were parallel with a straight edge placed on top of the crank snout. I ...
by Old School
Mon Mar 02, 2020 4:47 pm
Forum: Engine Tech
Topic: Engine Masters rod ratio test results
Replies: 151
Views: 11132

Re: Engine Masters rod ratio test results

There has been sbc superstock 327 engines built for the auto trans classes with less than 5.7 rod length. With an auto trans the shorter rod was always faster. We changed the lobe separation, duration on both intake and exhaust, and lift trying to get the 6 inch rod to better the 5.7. Tried 4 cams a...
by Old School
Wed Feb 26, 2020 10:10 am
Forum: Engine Tech
Topic: Nothing like a good head...
Replies: 23
Views: 2450

Re: Nothing like a good head...

What is the bore, stroke, valve sizes on the engine? Thanks Billy
by Old School
Sat Feb 15, 2020 11:12 am
Forum: Engine Tech
Topic: Help with cam selection, chevy inline 6. i screwed up
Replies: 15
Views: 762

Re: Help with cam selection, chevy inline 6. i screwed up

Would it be possible that the reground cam is for solid lifters and you put hydraulic lifters on it? I did that about 50 years ago and mine acted just like you described.
by Old School
Fri Feb 14, 2020 4:02 pm
Forum: Engine Tech
Topic: Main bearing clearance
Replies: 26
Views: 1330

Re: Main bearing clearance

Something is not adding up. The main diameter specs from GM are 2.6406-2.6415 range. If we use the 2.6440 to 2.6450 you have and use the median main diameter of 2.6410 we have .003-.004 loose on the main bore. Yet you have .004 clearance with the bore way out of specs. If the block is corrected to 2...
by Old School
Wed Feb 05, 2020 11:46 pm
Forum: Engine Tech
Topic: Minimum Cross Sectional Area: Question
Replies: 155
Views: 6954

Re: Minimum Cross Sectional Area: Question

My 383 combo I ran last year Dart 178cc cast iron heads 1.81" pinch SFT comp oval cam 235-242 @ 0.050" 500" lift 106 ICL 106 LSA 10.6 compression Stock airgap 950 hp holley 1.94"Intake valve 1.5" Exhaust valve 261 cfm @ 550" 3650 pound streeter 11.71 @ 114.51 mph 1.57 in the 60ft radial tyre. Ran b...
by Old School
Wed Feb 05, 2020 10:48 pm
Forum: Engine Tech
Topic: Minimum Cross Sectional Area: Question
Replies: 155
Views: 6954

Re: Minimum Cross Sectional Area: Question

My 383 combo I ran last year Dart 178cc cast iron heads 1.81" pinch SFT comp oval cam 235-242 @ 0.050" 500" lift 106 ICL 106 LSA 10.6 compression Stock airgap 950 hp holley 1.94"Intake valve 1.5" Exhaust valve 261 cfm @ 550" 3650 pound streeter 11.71 @ 114.51 mph 1.57 in the 60ft radial tyre. Ran b...
by Old School
Sun Feb 02, 2020 11:48 pm
Forum: Engine Tech
Topic: Contact at comp cams
Replies: 48
Views: 2494

Re: Contact at comp cams

If going with Comp, I'd recommend Tim Cole. I just talked to Tim at PRI and he's not at Comp anymore. Exactly. Tim Cole retired in December of 2018, Tim is a personal friend,and ran the racing department at Comp. He referred me to Dave McCarver, who I used in the past for circle track cams. Dave is...
by Old School
Fri Nov 08, 2019 10:12 am
Forum: Engine Tech
Topic: another balance question
Replies: 11
Views: 860

Re: another balance question

mag2555 wrote:
Fri Nov 08, 2019 7:05 am
My main concern would also be for the unneeded weight placing a greater load on the Rods.
Would you define the " unneeded weight" in this application?
by Old School
Wed Oct 30, 2019 2:05 pm
Forum: Engine Tech
Topic: BBC tunnel ram
Replies: 10
Views: 1049

Re: BBC tunnel ram

WeingartnerRacing wrote:
Wed Oct 30, 2019 10:06 am
Old School wrote:
Wed Oct 30, 2019 10:01 am
WeingartnerRacing wrote:
Tue Oct 29, 2019 11:49 pm
I used one on my 565bbc it made 1118hp@7500rpm
Do you have any et -mph on the on the car with the 565? Very nice engine.
Not yet still finishing it. Driveshaft should be here today. Hopefully in March.
Thanks
by Old School
Wed Oct 30, 2019 10:01 am
Forum: Engine Tech
Topic: BBC tunnel ram
Replies: 10
Views: 1049

Re: BBC tunnel ram

WeingartnerRacing wrote:
Tue Oct 29, 2019 11:49 pm
I used one on my 565bbc it made 1118hp@7500rpm
Do you have any et -mph on the on the car with the 565? Very nice engine.