Page 2 of 2 FirstFirst 12
Results 16 to 30 of 30
  1. #16
    casual poster
    Join Date
    Jan 2012
    Location
    Melbourne
    Posts
    268

    Default

    PHO35080202H (to suit holden journal crank and holden rods)

    Put that part number into precision's website search. If zero decking the block and taking a shaving the heads to suit you'd be able to get 10-10.5:1 without too much drama.

    You can play with rod lengths with the chev stuff to change dwell time at tdc, piston acceleration etc. Most people will just stick with what's readily available and a known reliable combo though. As you know, 5.7" and 6" are the common ones though. Many people favour one or the other. Theres info on this site if you do a search - pretty sure I've seen TK talking about it all before.

  2. #17
    Do you ever leave? paulzig's Avatar
    Join Date
    Oct 2008
    Location
    Gold Coast
    Posts
    15,377

    Default

    Quote Originally Posted by cbw_09 View Post
    PHO35080202H (to suit holden journal crank and holden rods)

    Put that part number into precision's website search. If zero decking the block and taking a shaving the heads to suit you'd be able to get 10-10.5:1 without too much drama.

    You can play with rod lengths with the chev stuff to change dwell time at tdc, piston acceleration etc. Most people will just stick with what's readily available and a known reliable combo though. As you know, 5.7" and 6" are the common ones though. Many people favour one or the other. Theres info on this site if you do a search - pretty sure I've seen TK talking about it all before.
    You could just get whatever has the easiest parts availability... If the 3.48" crank with a 5.7" chev rod has a piston off the shelf thats what I would do..

  3. #18
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    315

    Default

    Quote Originally Posted by cbw_09 View Post
    PHO35080202H (to suit holden journal crank and holden rods)

    Put that part number into precision's website search. If zero decking the block and taking a shaving the heads to suit you'd be able to get 10-10.5:1 without too much drama.

    You can play with rod lengths with the chev stuff to change dwell time at tdc, piston acceleration etc. Most people will just stick with what's readily available and a known reliable combo though. As you know, 5.7" and 6" are the common ones though. Many people favour one or the other. Theres info on this site if you do a search - pretty sure I've seen TK talking about it all before.
    Out of the last two 355s I built I used the following, SCAT crank (Holden journal) , 5.7 SCAT I beam rods and got a set of SRP Professional series pistons from Competition Engines in Vic. They have these pistons made to suit the Holden V8 and have a -10cc dish top. This combo balanced up with NO Mallory metal needed. If you use a Chev journal crank they generally need a slug of Mallory to balance up with a 5.7 rod & piston combo.

    The other bottom end had a SCAT crank (Chev journal), 6 SCAT I beam rods and I used SRP 268830 Chev pistons (1.125 pin height) they have a -5cc valve relief. This combo was based on TKs recommendations (he used a Mahle flat top in his thread, Ill try attach a link etc to it). This rotating assembly balanced up perfectly with NO Mallory metal needed and as I stuffed it all in a VR Series 2 efi block (factory stroker relieved) needed very little work to clearance it.

    Link to TKs 355 bottom end suggestion:
    https://r.tapatalk.com/shareLink?sha...8&share_type=t

    Im building another 355 this year and Im going the SCAT Chev journal crank, SCAT 6 I beam rod and short light weight SRP 1.125 pistons. $2500 would cover these parts and should have enough left over for crank & rod bearings.

    Each to their own, just my opinion.

  4. #19
    Part of the furniture
    Join Date
    Jan 2017
    Location
    Nth Qld
    Posts
    824

    Default

    HI
    check the specs
    SO Holden deck height 8.875
    stroke 3.00
    factory piston Comp height ??
    factory rod length 5.625

    355
    3.48 stroke
    rod length 5.7
    Comp height 1.420
    Tot 8.860

    355
    stroke 3.48
    rod length 6.0
    piston comp height 1.125
    8.865

    Holden combustion cc`s Red 58 average
    Holden combustion cc`s Vn 61 average

    Piston squish best around 40thou similar to chev ??? Talk about different thickness head gaskets later..

  5. #20
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    315

    Default

    Quote Originally Posted by swampy View Post
    HI
    check the specs
    SO Holden deck height 8.875
    stroke 3.00
    factory piston Comp height ??
    factory rod length 5.625

    355
    3.48 stroke
    rod length 5.7
    Comp height 1.420
    Tot 8.860

    355
    stroke 3.48
    rod length 6.0
    piston comp height 1.125
    8.865

    Holden combustion cc`s Red 58 average
    Holden combustion cc`s Vn 61 average

    Piston squish best around 40thou similar to chev ??? Talk about different thickness head gaskets later..
    Thats close enough for planning purposes.
    OP just needs to use a compression calculator (heaps around) plug in the numbers and go from there.

    Heads gaskets, plenty of them available in a variety of types & thicknesses to adjust comp if the heads are done and you didnt want to touch them.

  6. #21
    Part of the furniture
    Join Date
    Jan 2017
    Location
    Nth Qld
    Posts
    824

    Default

    HI
    Scat 9000 crank 3.48 stroke
    Scat pro I beams bushed /floater 5.7
    speed pro 1.425 comp height 12cc dish floater suppose to give 10:1 compression

    Anybody aware of suitable gasket sets?? mono torque etc
    Head gaskets whats available paper and MLS and thicknesses etc ???

    Whats a common quench found if deck has not been machined b4 ??. Aiming for 40-50thou ?? Gasket or deck machining .

    Once I found a selection of gaskets this will make selection easier .
    I use Wallace racing comp calculator . Did with the chev I am doing as well .

  7. #22
    427
    427 is offline
    casual poster
    Join Date
    Dec 2012
    Location
    Melbourne
    Posts
    398

    Default

    The Holden V8 is alive and well.
    Nice work boys ☺

  8. #23
    Do you ever leave? v8bulldogs's Avatar
    Join Date
    Oct 2008
    Location
    australia
    Posts
    1,675

    Default

    Swampy engine master has shitload of head gaskets to pick from, different size bores and thicknesses

  9. #24
    Part of the furniture
    Join Date
    Jan 2017
    Location
    Nth Qld
    Posts
    824

    Default

    HI
    Looking around for a variety of thicknesses for paper gaskets . Do they exist . Felpro , Monotorque.
    Any other brands ???

  10. #25
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    315

    Default

    Quote Originally Posted by swampy View Post
    HI
    Looking around for a variety of thicknesses for paper gaskets . Do they exist . Felpro , Monotorque.
    Any other brands ???
    Ive used Durapro before on a 355 with just over 10:1 comp and my pers preference is the Felpro 1076. I used this on a 355 with 10.8:1 comp. These two gaskets compress when installed to 40-41 thou.

    Some people love Cometics as they come in a variety of thicknesses (.027, .040 or .041 and even .050 from memory) and are tuff as nails but your machines surfaces need to be good to get them to seal correctly.

  11. #26
    Do you ever leave? EH179's Avatar
    Join Date
    Jan 2008
    Location
    Ipswich. QLD
    Posts
    3,825

    Default

    Precision have Endurotec and Durapro and possibly others:

    https://www.precisionintl.com/Engine...rand=Endurotec

  12. #27
    Part of the furniture
    Join Date
    Jan 2017
    Location
    Nth Qld
    Posts
    824

    Default

    HI
    Head gasket selection for paper type seems tobe .040 only. Have to ring Precision on Monday about the Endurotec and Durapro
    quench best at .040 plus ????

  13. #28
    Part of the furniture Deuce.'s Avatar
    Join Date
    Sep 2014
    Location
    Meremere Dragway - often!
    Posts
    969

    Default

    Quote Originally Posted by 46Crab View Post
    Some people love Cometics as they come in a variety of thicknesses (.027, .040 or .041 and even .050 from memory) and are tuff as nails but your machines surfaces need to be good to get them to seal correctly.
    Yeap, I bought a low km 355" from a VK. So when putting efi heads on used .027 cometic's to get the comp up a bit (63cc heads instead of b-cast 56cc or whatever they were)

  14. #29
    Do you ever leave? EH179's Avatar
    Join Date
    Jan 2008
    Location
    Ipswich. QLD
    Posts
    3,825

    Default

    Quote Originally Posted by swampy View Post
    HI
    Head gasket selection for paper type seems tobe .040 only. Have to ring Precision on Monday about the Endurotec and Durapro
    quench best at .040 plus ????
    In my opinion yes, 0 deck and a flat top using the .040" H/G for quench.

  15. #30
    casual poster
    Join Date
    Jan 2012
    Location
    Melbourne
    Posts
    268

    Default

    Durapro graphlex (graphite) are good value for money and are .040 too afaik. Ive used them quite a bit without issue.

    I believe endurotec is the budget option. Only used those head gaskets once and encountered problems (maybe not the gaskets fault) but happy to pay a little extra for the durapro anyway

Page 2 of 2 FirstFirst 12

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Why are El Camino's cheaper than Holden Tonners?
    By Jimmy_Recard in forum Chevrolet
    Replies: 0
    Last Post: 03-09-2016, 11:03 AM
  2. cheaper than a divorce I suppose.
    By metalhead_seadog in forum Members Lounge
    Replies: 3
    Last Post: 04-09-2010, 02:05 AM
  3. American cars getting cheaper?
    By PASSNBY in forum Members Lounge
    Replies: 2
    Last Post: 16-11-2008, 12:01 PM
  4. Decent cheaper power boost options (VR)
    By Syko in forum 6 & 4 Cylinder discussion
    Replies: 0
    Last Post: 29-03-2007, 11:49 PM
  5. Cheaper than a Harley and twice the fun!
    By 1BADSS in forum Members Lounge
    Replies: 6
    Last Post: 23-04-2006, 06:00 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •