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PostPosted: Thu Jan 03, 2019 11:37 pm 
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TBI Slant 6

Joined: Thu Nov 24, 2005 9:14 pm
Posts: 172
Location: Roy Utah
Car Model*:
I am really interested it doing this upgrade but have no clue
On what power rating to by, any suggestions or thoughts ?
The car is not run at this point long long story.
The motor is fresh with only breaking in time on it
Here is the rundown:
225 bored 80 over
Venolie custom pistons to bring it up to 10/1
Clifford’s 268 cam
1.65 rocker ratio
Port and polished intake with over sized valves
Ported but not polished exhaust over sized valve
Sorry I just moved and can’t find the paperwork from the head shop
Clifford 4 barrel intake their dual header
And would like to add b boost to in the future
Any information would be great

_________________
225+0.080 at 10:1
268cam
holley 390
clifford headers
8 3/4 355's lsd
kh brakes
electronic ing


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PostPosted: Thu Jan 24, 2019 9:07 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
Posts: 2037
Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
I'm not a boost guy, but I think you need lower compression if you're adding boost, otherwise...boom! Experts will surely chime in on that...

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https://tinyurl.com/yynpj4v2


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PostPosted: Sun Feb 17, 2019 11:15 am 
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TBI Slant 6

Joined: Thu Nov 24, 2005 9:14 pm
Posts: 172
Location: Roy Utah
Car Model*:
Ya, if I add boost will have to bring the compression down a bit . That’s why I put domed pistons in inlue of milling the head that .01

_________________
225+0.080 at 10:1

268cam

holley 390

clifford headers

8 3/4 355's lsd

kh brakes

electronic ing


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PostPosted: Mon Feb 18, 2019 1:56 pm 
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Board Sponsor
User avatar

Joined: Fri Feb 29, 2008 10:49 pm
Posts: 1536
Location: Salem, Oregon
Car Model*: 58 Plymouth Plaza 2dr, 63 Valiant Signet 200 2dr
stolan83 wrote:
That’s why I put domed pistons in inlue of milling the head that .01


Domed pistons eh?

Also, milling of the head for small chamber and max compression is 0.100", not 0.01" :D :wink:

~THOR~

_________________
1958 Plymouth Plaza 2 door Club Sedan
1963 Plymouth Valiant Signet 200 HT - "CL4P-TP"
Licensed Auto Appraiser - RevItUp Classic Appraisals
VP - Cherry City Bombers CC
Part of Tyrde-Browne Racing


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