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| Cadillac 4.5 supercharged engine (Page 3/4) |
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Shho13
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APR 06, 01:12 AM
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LOVE the headers! ------------------
"Discord"
Red 1988 GT under restoration!
Let's Go Mets!
( ͡° ͜ʖ ͡°)
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Johns 4.9
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APR 06, 03:12 AM
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Shho13,
Thanks for the compliment on the headers.
Cheers
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Darrelk
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APR 06, 08:23 AM
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Good tranny combo for that motor. I could see fabbing a fiberglass breather box for that decklid......
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Raydar
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APR 08, 07:42 PM
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Johns 4.9
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APR 08, 08:05 PM
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I am working on a stud kit for my next boosted 4.5/4.9 engine.
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Spadesluck
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APR 09, 12:50 AM
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I have always thought about making my own stud kit. Did you buy a particular package?
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Johns 4.9
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APR 09, 01:57 AM
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No, no particular package. I based my measurements on the depth of the bolt holes in the block and the length of the bolts. Then I figured out what size stud would work. Steel is grade 10.9 or stronger. I need the main cap stud kit for the stud girdle that is going in with this engine.
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V8 Formula
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APR 10, 08:23 AM
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It is TOO d@mn early in the morning for Fiero p0rn.
Nice job! Beautiful![This message has been edited by V8 Formula (edited 04-10-2019).]
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Dennis LaGrua
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APR 11, 11:48 AM
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| quote | Originally posted by Johns 4.9:
No, no particular package. I based my measurements on the depth of the bolt holes in the block and the length of the bolts. Then I figured out what size stud would work. Steel is grade 10.9 or stronger. I need the main cap stud kit for the stud girdle that is going in with this engine. |
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Got to give you credit for addressing the possible head sealing issues with studs. I am inclined to believe that it will work. As for the main caps I believe that you should be OK with those stock. There was a guy on this forum (PBJ -IIRC) that turbocharged an EFI 4.9L and ran mid 12's in the 1/4 mile. The crank held. This seemed to prove that boosting helped overcome the restrictive ports in the head that gives the horsepower curve a low redline. Since it looks like you are going with an old school distributor and carb; IMO the biggest challenge might be the tuning. In the early days I've handled timing on a supercharged V8 by restricting the total advance by limiting the travel of the weights. This does little to tailor the timing curve to all running conditions. It can limit the total advance which is probably OK for the strip.
I'd give some thought to EFI.
You've done some really fine work on your engine and showed some real skills. Many of us will be following this post with enthusiasm. Hope that it meets your expectation.------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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Blacktree
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APR 11, 12:08 PM
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| quote | | Originally posted by V8 Formula: It is TOO d@mn early in the morning for Fiero p0rn. |
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It is NEVER too early for engine pr0n. 
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