350 build
03-11-2016, 02:38 PM
#1
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350 build
My engine is half way assembled right now. Does anyone want to take a guess how much wheel horsepower it will make? It started as a tpi engine from my 90 corvette six speed. Bored .020" over flat top hypereutectic pistons, machined block, rods, crank ect, felpro 1010 head gaskets .039", IK180 heads, comp cams 224 duration 525 lift at valve 110lsa, stock rockers edelbrock pro-flo intake, 36 lb injectors. Going to have pcmforless.com burn a chip for it.
I see my new heads don't have a hole drilled and tapped for the coolant temp sensor. For anybody with heads like this what did you do about that?
I see my new heads don't have a hole drilled and tapped for the coolant temp sensor. For anybody with heads like this what did you do about that?
03-11-2016, 08:20 PM
#5
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I haven't bought the injectors yet. I'm afraid to have not enough fuel injector. Then I would have to buy another set and they aren't cheap. What size do you think it'll need? We are flowing the heads tomorrow. Specs say it should be 243cfm at .500" and 245cfm at .600". The last set of heads we had flowed better than spec.
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JackDidley (06-07-2016)
03-13-2016, 09:29 AM
#7
Safety Car
Not a bad combination, it should make 350+ hp at the engine. 10:1 compression, decent flowing heads, good intake, i assume headers, decent exhaust. You will need larger fuel pump, the 36 lb injectors will work but are larger then you need.
Last edited by bjankuski; 03-13-2016 at 10:22 AM.
03-15-2016, 11:39 PM
#8
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Okay so maybe a high flow fuel pump and 30lbs injectors. We flowed my new brodix IK180 heads at my friends shop. @28" of water 265cfm intake at .530" lift more lift than that it fell off 185cfm exhaust. Blew away the specs for the head. I've got the rest of the flow numbers written down somewhere, but that was peak flow.
03-15-2016, 11:56 PM
#9
Team Owner
Pro Mechanic
Okay so maybe a high flow fuel pump and 30lbs injectors. We flowed my new brodix IK180 heads at my friends shop. @28" of water 265cfm intake at .530" lift more lift than that it fell off 185cfm exhaust. Blew away the specs for the head. I've got the rest of the flow numbers written down somewhere, but that was peak flow.
Last edited by Tom400CFI; 03-15-2016 at 11:57 PM.
03-16-2016, 06:33 AM
#10
Safety Car
Okay so maybe a high flow fuel pump and 30lbs injectors. We flowed my new brodix IK180 heads at my friends shop. @28" of water 265cfm intake at .530" lift more lift than that it fell off 185cfm exhaust. Blew away the specs for the head. I've got the rest of the flow numbers written down somewhere, but that was peak flow.
You should not have an issue with 350+ HP at the crank.
03-17-2016, 12:46 AM
#11
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03-17-2016, 08:03 PM
#12
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Has anyone here tried using stock l98 rockers with Brodix IK180 heads? The l98 aluminum heads use guides and the rockers are stamped steel self aligning. Are those rockers compatible with the guides on the ik180?
03-17-2016, 10:19 PM
#13
Team Owner
Pro Mechanic
O.K....IDK if you'll get 350 hp through the stock exhaust and manifolds...I'd highly recommend changing to headers and dual exhaust, or LT1 manifolds and LT1 exhaust.
The guides in the L98 heads are for assembly only; they don't actually guide the rocker b/c as you noted, the rockers are self aligning type. The L98 "guides" are way too wide (a guide grove) to function as a guide, and the stock push rods aren't hardened.
You could use the stock rockers on the Brodix heads, but not w/the guides. You can't use two methods of rocker guiding at the same time; you'll either need to remove the brodix guides and retain your stock, self aligning rockers, OR buy non-self aligning rockers and use the guides that come w/the heads (along w/hardened pushrods, of course).
.
The guides in the L98 heads are for assembly only; they don't actually guide the rocker b/c as you noted, the rockers are self aligning type. The L98 "guides" are way too wide (a guide grove) to function as a guide, and the stock push rods aren't hardened.
You could use the stock rockers on the Brodix heads, but not w/the guides. You can't use two methods of rocker guiding at the same time; you'll either need to remove the brodix guides and retain your stock, self aligning rockers, OR buy non-self aligning rockers and use the guides that come w/the heads (along w/hardened pushrods, of course).
.
Last edited by Tom400CFI; 03-17-2016 at 10:21 PM.
03-19-2016, 10:16 PM
#14
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Thread Starter
O.K....IDK if you'll get 350 hp through the stock exhaust and manifolds...I'd highly recommend changing to headers and dual exhaust, or LT1 manifolds and LT1 exhaust.
The guides in the L98 heads are for assembly only; they don't actually guide the rocker b/c as you noted, the rockers are self aligning type. The L98 "guides" are way too wide (a guide grove) to function as a guide, and the stock push rods aren't hardened.
You could use the stock rockers on the Brodix heads, but not w/the guides. You can't use two methods of rocker guiding at the same time; you'll either need to remove the brodix guides and retain your stock, self aligning rockers, OR buy non-self aligning rockers and use the guides that come w/the heads (along w/hardened pushrods, of course).
.
The guides in the L98 heads are for assembly only; they don't actually guide the rocker b/c as you noted, the rockers are self aligning type. The L98 "guides" are way too wide (a guide grove) to function as a guide, and the stock push rods aren't hardened.
You could use the stock rockers on the Brodix heads, but not w/the guides. You can't use two methods of rocker guiding at the same time; you'll either need to remove the brodix guides and retain your stock, self aligning rockers, OR buy non-self aligning rockers and use the guides that come w/the heads (along w/hardened pushrods, of course).
.
03-19-2016, 10:31 PM
#15
Advanced
Thread Starter
O.K....IDK if you'll get 350 hp through the stock exhaust and manifolds...I'd highly recommend changing to headers and dual exhaust, or LT1 manifolds and LT1 exhaust.
The guides in the L98 heads are for assembly only; they don't actually guide the rocker b/c as you noted, the rockers are self aligning type. The L98 "guides" are way too wide (a guide grove) to function as a guide, and the stock push rods aren't hardened.
You could use the stock rockers on the Brodix heads, but not w/the guides. You can't use two methods of rocker guiding at the same time; you'll either need to remove the brodix guides and retain your stock, self aligning rockers, OR buy non-self aligning rockers and use the guides that come w/the heads (along w/hardened pushrods, of course).
.
The guides in the L98 heads are for assembly only; they don't actually guide the rocker b/c as you noted, the rockers are self aligning type. The L98 "guides" are way too wide (a guide grove) to function as a guide, and the stock push rods aren't hardened.
You could use the stock rockers on the Brodix heads, but not w/the guides. You can't use two methods of rocker guiding at the same time; you'll either need to remove the brodix guides and retain your stock, self aligning rockers, OR buy non-self aligning rockers and use the guides that come w/the heads (along w/hardened pushrods, of course).
.
03-19-2016, 10:44 PM
#17
Team Owner
Pro Mechanic
Cool pics! Car looks good...engine look great. 
Car looks good...engine look great.
03-19-2016, 10:57 PM
#18
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03-20-2016, 11:11 AM
#19
Team Owner
Pro Mechanic
IDK either....I've never attached pics in this site; I always DL them to photobucket, the link them here. Intake looks good.