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Search found 239 matches

by 6.50camaro
Fri Jul 03, 2020 10:07 am
Forum: Engine Tech
Topic: "L98 valve spacing"
Replies: 22
Views: 684

Re: "L98 valve spacing"

Aren't AFR eliminator series suppose to be L98 stud spacing? Dan
by 6.50camaro
Mon Jun 29, 2020 9:39 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 498

Re: Severe engine overheat = now overheating oil???

Are they mechanical cap tube gauges or eletric with sensor gauges . Did you replace sensors if electric . If mechanical were they the same make and model gauge . Havng works as an HVAC tech for 35 yrs I have seen a lot of variances in supposed calibrated instrumentsbetween differnt brands and models...
by 6.50camaro
Thu Jun 25, 2020 9:40 pm
Forum: Engine Tech
Topic: .120 vs.080 wall 3/8 pushrods sbc
Replies: 24
Views: 1107

Re: .120 vs.080 wall 3/8 pushrods sbc

af2 wrote:
Thu Jun 25, 2020 7:11 pm
It has nothing to do with weight, That is why MadBill and I use .187 wall 3/8 pushrods.
So you have a .001 hole for the oil to lube the top end :wink: Dan
Sorry ,I did not see blackfords post till after I posted this
by 6.50camaro
Thu Jun 25, 2020 2:17 pm
Forum: Engine Tech
Topic: .120 vs.080 wall 3/8 pushrods sbc
Replies: 24
Views: 1107

Re: .120 vs.080 wall 3/8 pushrods sbc

I quess I could weigh the old Crower hi seat roller lifters and the 5/16 pushrod and compare against the new lite weight std seat lifters with the 3/8 pushrod just to get a comparison to see if there is added mass or less mass on that side of the pivot . Not that that is going to matter because I am...
by 6.50camaro
Tue Jun 23, 2020 3:55 pm
Forum: Engine Tech
Topic: .120 vs.080 wall 3/8 pushrods sbc
Replies: 24
Views: 1107

Re: .120 vs.080 wall 3/8 pushrods sbc

Blackford , the old springs were 220# on the seat and 580# at max lift . The old push rods were 5/16 x .080 but they also were 6.550" long I was using Crower Hi-Seat roller lifters. New pushrods are in the 8.000" range for use with normal seat height lifter and a lot lighter weight roller lifter wit...
by 6.50camaro
Tue Jun 23, 2020 2:29 pm
Forum: Engine Tech
Topic: .120 vs.080 wall 3/8 pushrods sbc
Replies: 24
Views: 1107

.120 vs.080 wall 3/8 pushrods sbc

Doing some valve train upgrades to my 422 sbc . New valves ,springs, retainers ,pushrods. Going to 3/8" pushrods from 5/16", will there be a big advantage using .120 wall over .080 wall pushrods on the 3/8" pushrods . Springs are 260lbs on the seat and 650lbs at max lift . Max gross lift is .710 on ...
by 6.50camaro
Sun Jun 07, 2020 8:53 pm
Forum: Engine Tech
Topic: MCSA for Pro Topline 220 cast Iron S C
Replies: 24
Views: 1151

Re: MCSA for Pro Topline 220 cast Iron S C

I would enjoy hearing Test and Tune results, too! Not much to share . Made one pass , not a good burn out (car pushed forward while trying to heat tires) 1.59- 60', 7.25 1/8 et 94+ mph . Tried a second pass , an electric glick popped up line loc wouldn't work tranny brake wouldn't engage . Aborted ...
by 6.50camaro
Sun May 31, 2020 7:21 pm
Forum: Engine Tech
Topic: Dominator - can't even get it to idle
Replies: 92
Views: 3104

Re: Dominator - can't even get it to idle

Check to make sure the PV and secondary PV plug gaskets are seating prperly .I had a carb that wouldn't idle good dropping fuel even after shut off . Found the wrong gaskets on PV and Plug .Just a thought . Dan
by 6.50camaro
Sat May 30, 2020 10:28 pm
Forum: Engine Tech
Topic: MCSA for Pro Topline 220 cast Iron S C
Replies: 24
Views: 1151

Re: MCSA for Pro Topline 220 cast Iron S C

Ok will post some results . Hope it goes better than the last time. 1st run of the year in March before all this Chinese Bat flu bs. My spare parts 350 lost the head off one of the exhaust valves just before the finish line . Holed #8 cylinder wall and head . Run a 1.47-60' 6.95 1/8th . Was tuning t...
by 6.50camaro
Sat May 30, 2020 8:11 pm
Forum: Engine Tech
Topic: MCSA for Pro Topline 220 cast Iron S C
Replies: 24
Views: 1151

Re: MCSA for Pro Topline 220 cast Iron S C

Steve, No I have not had the opportunity to own one of those. I only work on my own stuff so my range of intakes has been limited to an Eddy rpm air gap , Single planes manifolds have been Dart Wilson ,Brodix , Wieand team G with 3/4" taller plenum and a GM bowtie all sbc stuff. Hopefully all goes w...
by 6.50camaro
Tue May 26, 2020 5:27 pm
Forum: Engine Tech
Topic: MCSA for Pro Topline 220 cast Iron S C
Replies: 24
Views: 1151

Re: MCSA for Pro Topline 220 cast Iron S C

Thanks for your input ,Chad Dan
by 6.50camaro
Tue May 26, 2020 4:51 pm
Forum: Engine Tech
Topic: MCSA for Pro Topline 220 cast Iron S C
Replies: 24
Views: 1151

Re: MCSA for Pro Topline 220 cast Iron S C

w Smaller csa faster speeds; larger csa slower speeds. That is why average velocity is important and I'm talking localized at the apex. Chad ,are you talking of measured velocity as in on the bench or calculated velocity . I 'll give an example of a head I have and calculated . 225cc , 5.437" port ...
by 6.50camaro
Mon May 25, 2020 2:22 pm
Forum: Engine Tech
Topic: MCSA for Pro Topline 220 cast Iron S C
Replies: 24
Views: 1151

Re: MCSA for Pro Topline 220 cast Iron S C

If it was my equipment I would have no problem running those parts . I would get the heads angle milled to get the compression as high as I could with that cam ,keep the piston to heads clearance between .035 to .040 . again to keep the compression as hi as possible. And plan on adding more stall in...
by 6.50camaro
Sat May 23, 2020 10:40 pm
Forum: Engine Tech
Topic: BBC HEADS # 3946074 Winters foundary
Replies: 4
Views: 603

Re: BBC HEADS # 3946074 Winters foundary

Any tips on changing guide in these heads? Do any of them go thru the coolant passage like on the iron big block heads? Dan
by 6.50camaro
Thu May 21, 2020 9:19 pm
Forum: Engine Tech
Topic: BBC HEADS # 3946074 Winters foundary
Replies: 4
Views: 603

Re: BBC HEADS # 3946074 Winters foundary

Thanks ericnova , I am assuming that is the date code (9. 8. 72) it is cast on the intake runner on the underside or deck side of the head . My buddy doesn't want to work on them if the were of great value . They look like a nice set of unmolested heads ,no port work, stripped threads , welding repa...