Thanks. I knew they were tough on bores but I didn't realize the extent of it. Gonna sell these and grab something more streetable.Quote:
Originally Posted by shownomercy
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Thanks. I knew they were tough on bores but I didn't realize the extent of it. Gonna sell these and grab something more streetable.Quote:
Originally Posted by shownomercy
Checked the p/n on the Hellfires, they weren't even the right size lol. To ebay they go.
Also did some math and determined the ARP2000's are total overkill because of how light the pistons/pins are. Might scoop them anyway if the price is right but I'd rather put the money towards valvetrain.
Updated shopping list:
Scat 3.8" 4340 crank for 6" rods
Scat or Eagle FSI I-beams, both 4340, 6", with 7/16" ARP 8740 or better
Johnson 2110 lifters
BTR spring kit with the titanium retainers
Melling 10552
Mahle plasma moly rings, file fit, std tension
Cloyes 9-3651X3 so I can run a mech pump (don't wanna rule out autox/RR)
Felpro 1074's
Black friday needs to be here already
Update on this jawn...
Car has been sitting for quite some time as it needs tires, front suspension and steering work. I can still drive it around though because why not?
I've slowly been collecting parts to build up the 4-bolt block on the side. I also dug up a bunch of old parts that I'm intent on using as they're mostly new or lightly used. I was originally going to have the LE1's redone with larger valves, but instead decided on ditching them altogether for a better casting that'll most likely be ported 21* Trick Flows (because they have small chambers). The old motor will probably get dumped into my Firehawk or sold to a friend.
Pics:
6x Johnson 2110 lifters that have been sitting on the shelf for a while. I bought some as spares for the Camaro for some reason? I just need 10 more.
Attachment 39897
New Scat 3.8" 4340 crank
Attachment 39898
New Eagle FSI 4340 I-beams with the 7/16" ARP 8740 bolts
Attachment 39899
Used Comp XFI468 I bought off a member here years ago. I think it only had dyno time on it? In great shape and I'm hell bent on using it.
Attachment 39900
The ole World Motown EFI single plane I was going to use on the Camaro. I think it's more at home here. Edelbrock elbow, 90mm TB, and I have new fuel rails for it.
Attachment 39901
So the deets are...
388ci
12-12.3:1 SCR on 93oct
XFI468 with questionable rocker selection
Probably LE TFS 21* heads, upgraded 2.055 intake valve
Single plane with some mild work to the plenum area (2 and 6 need to be unshrouded)
So..... 500whp on a shelf cam? Or maybe I'm smoking too much crack
Did a quick mockup of the block. I was under the impression that this thing had a line hone/bore done because it has ARP studs, but looking closely at the main cap bores tells me that's not true. I torqued 2 of the caps down to ARP's recommended spec and was seeing about a thou or more of out-of-round, so it needs to go back to the machine shop. I ordered some Milodon windage tray studs to sub out a few because these studs are too short anyway.
Quick rod side clearance check on the first rod journal was 0.013" which is good.
Attachment 39902
Also checked the deck clearance with a feeler gage and straight edge which came out to 0.007" in the hole. I made a deck bridge tool to double check and got the same thing.
Attachment 39903
I've also been debating swapping the cam out for a Lunati 20080723 which will have a little more lift than the XFI (would be using 1.7's on both). Currently trying to figure out what springs I want to go with, but it's slim pickins for duals on 11/32" valves. I've been considering the BTR SK004 kit with titanium retainers, but the rate is slightly higher @408 which may make the open pressure a little too high for either of the cast cams. Trying to figure out if there's a retainer that'll work with the lower rate SP001 BTR or TSP duals and my valves. I may have to suck it up and get the pricier Nexteks though.
Plans changed a little bit. Ditching the XFI for a Comp custom grind from Lloyd with more duration, overlap, and lift. Heads also showed up. They're LE 21* Trick Flows with the 2.055" intake valve upgrade and a BTR spring kit with Ti retainers.
Just got the block back from the machine shop after a line hone. Now I need to grind the block for rod clearance and set the rods/mains.
Attachment 40033
Attachment 40034
Attachment 40035
That cam is meaty lol
thats gonna be a fun car
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I asked for the most cam I could get with hydraulic lifters on the street, and then someQuote:
Originally Posted by harner
500 tire or bust lmao