Search found 620 matches
- Mon May 03, 2021 5:24 pm
- Forum: Engine Tech
- Topic: titanium valves
- Replies: 4
- Views: 1019
Re: titanium valves
On a 8500 rpm SBC the springs lasted 3 times as long with 20 lbs less spring pressure
- Tue Jan 26, 2021 12:48 pm
- Forum: Engine Tech
- Topic: 383 Build input request (E85)
- Replies: 56
- Views: 4602
Re: 383 Build input request (E85)
CompStar 2.00 rods(csa6000cs2a2ah) have the bolts moved toward the center line, so the bolts clear every where better. Most of your rod manufactures
use 2.1 blanks( 350 journals) so your clearance is no better. I would check bolts center line, before you buy. Speedway has CompStars for $633.
use 2.1 blanks( 350 journals) so your clearance is no better. I would check bolts center line, before you buy. Speedway has CompStars for $633.
- Wed Jan 13, 2021 10:22 am
- Forum: Engine Tech
- Topic: 427 Build And Drag Test
- Replies: 33
- Views: 4740
Re: 427 Build And Drag Test
very good post; two thumbs-up
- Mon Jan 04, 2021 9:34 am
- Forum: Engine Tech
- Topic: Most Power from Stock 400-509 casting?
- Replies: 21
- Views: 2103
Re: Most Power from Stock 400-509 casting?
Why tie up money in a block like a 509 casting; when you can buy a dart shp ( shp pro better yet) for a few dollars more. You don't have the clearance problems, thin cylinder walls or the mains wanting to walk. Also the wore out lifter bores, sell your block to someone who want a low hp street engin...
- Fri Jan 01, 2021 9:22 am
- Forum: Engine Tech
- Topic: Did I chose the wrong heads?
- Replies: 34
- Views: 4322
Re: Did I chose the wrong heads?
With your heads & compression your combination want to be shifted between 7000 to 7400. I am saying this because peak HP will be above 6600. Run a cam with 268 to 272 intake; with 12 degree more exhaust on 110 lsa. Your heads and compression is what's moving your shift rpm up; the cam you have w...
- Thu Dec 31, 2020 9:28 am
- Forum: Engine Tech
- Topic: 327 Build
- Replies: 28
- Views: 3568
Re: 327 Build
With .040 over bore on a 327 (4.040) a .035 to .040 compress gasket would work. A cam with 224 to 236 intake & run 6 to 8 degrees
spread on exhaust. Run 109 to 112 LSA ; 109 for a lope idle 112 for a smoother idle.
spread on exhaust. Run 109 to 112 LSA ; 109 for a lope idle 112 for a smoother idle.
- Fri Dec 25, 2020 11:07 am
- Forum: Engine Tech
- Topic: 383 Build input request (E85)
- Replies: 56
- Views: 4602
Re: 383 Build input request (E85)
On your rotating ass. run small journal rod size ( 283 ) and comp star (csa6000cs2ah) they weigh 591g and clear a standard base circle cam.
I have ran those rods in 700hp engines with no problems. ohio crank are reasonably priced and give them your bob weight and they can balance
for you.
I have ran those rods in 700hp engines with no problems. ohio crank are reasonably priced and give them your bob weight and they can balance
for you.
- Mon Aug 24, 2020 8:11 am
- Forum: Engine Tech
- Topic: 8 to 900 hp out of a 1st Gen. SBC Block.
- Replies: 44
- Views: 4612
Re: 8 to 900 hp out of a 1st Gen. SBC Block.
Dart block; shp pro or little M
- Thu Jul 02, 2020 3:38 pm
- Forum: Engine Tech
- Topic: Heads for 400 w/Mike Jones HR cam
- Replies: 37
- Views: 4412
Re: Heads for 400 w/Mike Jones HR cam
On budget valves there are a lot difference in quality between brands; best to find out what alloy they are made out of. Any one piece 21-4n set would stand up to a HR spring. With afr 210 you get good components, not sure what atk is using.
- Tue Jun 02, 2020 6:32 pm
- Forum: Engine Tech
- Topic: Expected et change worth the cost of new AFRs in rail
- Replies: 22
- Views: 2377
Re: Expected et change worth the cost of new AFRs in rail
From post before a .075 angle was going to keep compression the same. That would be part of cylinder head change; and would have very little loss in compression.
- Tue Jun 02, 2020 3:38 pm
- Forum: Engine Tech
- Topic: Expected et change worth the cost of new AFRs in rail
- Replies: 22
- Views: 2377
Re: Expected et change worth the cost of new AFRs in rail
The 40 lbs you lose by going with AFR will lower your et .08 to .1 sec. CamKing's cam spec is close to what I would go with. Also factor in hp gains from gains from cfm & cam you should run 5.0's maybe even better.
- Tue May 26, 2020 12:40 pm
- Forum: Engine Tech
- Topic: Plenum volume
- Replies: 30
- Views: 4807
Re: Plenum volume
smaller runners have less spread larger runners have more spread or carry peak hp to a higher rpm.
- Tue May 26, 2020 11:10 am
- Forum: Engine Tech
- Topic: MCSA for Pro Topline 220 cast Iron S C
- Replies: 24
- Views: 2451
Re: MCSA for Pro Topline 220 cast Iron S C
Smaller csa faster speeds; larger csa slower speeds.
- Tue May 26, 2020 11:06 am
- Forum: Engine Tech
- Topic: Plenum volume
- Replies: 30
- Views: 4807
Re: Plenum volume
Also your spread between peak tq & peak hp ; is a indication on runner taper & plenum volume size.
- Tue May 26, 2020 10:52 am
- Forum: Engine Tech
- Topic: MCSA for Pro Topline 220 cast Iron S C
- Replies: 24
- Views: 2451
Re: MCSA for Pro Topline 220 cast Iron S C
Forget about port volume; csa is what to concentrate on. A constant port velocity or as close to it is more important than the volume.